CVE-2023-51764
mediumpriority · track · 32OT risk · elevatedEPSS 0.026 · 85 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-27
Postfix through 3.8.5 allows SMTP smuggling unless configured with smtpd_data_restrictions=reject_unauth_pipelining and smtpd_discard_ehlo_keywords=chunking (or certain other options that exist in recent versions). Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Postfix supports <LF>.<CR><LF> but some other popular e-mail servers do not. To prevent attack variants (by always disallowing <LF> without <CR>), a different solution is required, such as the smtpd_forbid_bare_newline=yes option with a Postfix minimum version of 3.5.23, 3.6.13, 3.7.9, 3.8.4, or 3.9.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- Fixedpostfix-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-2:3.5.25-1.el9.src as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-cdb-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-cdb-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-cdb-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-cdb-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-cdb-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-cdb-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-cdb-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-cdb-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-debugsource-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-debugsource-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-debugsource-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-debugsource-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-ldap-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-ldap-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-ldap-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-ldap-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-ldap-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-ldap-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-ldap-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-ldap-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-lmdb-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-lmdb-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-lmdb-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-lmdb-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-lmdb-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-lmdb-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-lmdb-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-lmdb-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-mysql-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-mysql-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-mysql-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-mysql-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-mysql-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-mysql-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-mysql-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-mysql-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pcre-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pcre-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pcre-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pcre-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pcre-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pcre-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pcre-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pcre-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-perl-scripts-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-perl-scripts-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-perl-scripts-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-perl-scripts-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pgsql-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pgsql-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pgsql-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pgsql-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pgsql-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pgsql-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pgsql-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-pgsql-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-sqlite-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-sqlite-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-sqlite-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-sqlite-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-sqlite-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-sqlite-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-sqlite-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Fixedpostfix-sqlite-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2024:9243 - Workaroundpostfix-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-2:3.5.25-1.el9.src as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-cdb-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-cdb-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-cdb-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-cdb-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-cdb-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-cdb-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-cdb-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-cdb-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-debugsource-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-debugsource-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-debugsource-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-debugsource-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-ldap-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-ldap-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-ldap-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-ldap-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-ldap-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-ldap-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-ldap-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-ldap-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-lmdb-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-lmdb-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-lmdb-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-lmdb-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-lmdb-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-lmdb-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-lmdb-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-lmdb-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-mysql-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-mysql-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-mysql-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-mysql-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-mysql-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-mysql-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-mysql-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-mysql-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pcre-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pcre-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pcre-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pcre-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pcre-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pcre-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pcre-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pcre-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-perl-scripts-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-perl-scripts-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-perl-scripts-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-perl-scripts-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pgsql-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pgsql-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pgsql-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pgsql-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pgsql-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pgsql-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pgsql-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-pgsql-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-sqlite-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-sqlite-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-sqlite-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-sqlite-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-sqlite-debuginfo-2:3.5.25-1.el9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-sqlite-debuginfo-2:3.5.25-1.el9.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-sqlite-debuginfo-2:3.5.25-1.el9.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
- Workaroundpostfix-sqlite-debuginfo-2:3.5.25-1.el9.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf
This flaw can be PARTIALLY mitigated via the following options in the main.cf: smtpd_data_restrictions = reject_unauth_pipelining smtpd_discard_ehlo_keywords = chunking, silent-discard Please note this only blocks the misuse of SMTP command pipelining, but does not address message pipelining nor malformed line endings. The only fix for these issues are via package updates.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (4)
Public proof-of-concept and weaponised exploit code.
- Double-q1015/CVE-2023-51764CVE-2023-51764 pocPoC · poc_in_github
- d4op/CVE-2023-51764-POCjust idea, no cp plsPoC · poc_in_github
- duy-31/CVE-2023-51764Postfix SMTP Smuggling - Expect Script POCPoC · poc_in_github
- eeenvik1/CVE-2023-51764PoC CVE-2023-51764 PoC · poc_in_github
affected products (104)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- RHSA-2024:9243Red Hat Security Advisory: postfix security update2024-11-12csaf · redhat_csafUS
An update for postfix is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- WID-SEC-W-2023-3206SMTP Implementierungen: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2023-12-21csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in verschiedenen SMTP Implementierungen ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
- WID-SEC-W-2026-3076Dovecot: Mehrere SchwachstellenDeutsch2026-08-27csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dovecot ausnutzen, um Sicherheitsvorkehrungen zu umgehen, sensible Informationen offenzulegen, Daten zu manipulieren oder Denial-of-Service-Zustände herbeizuführen.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (55)
External citations — patches, advisories, analysis.
- http://ftp.porcupine.org/mirrors/postfix-release/index.htmlPatchcnnvd
- http://www.openwall.com/lists/oss-security/2023/12/24/1cnnvd
- http://www.openwall.com/lists/oss-security/2023/12/25/1cnnvd
- https://access.redhat.com/security/cve/CVE-2023-51764cnnvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2255563cnnvd
- https://cxsecurity.com/cveshow/CVE-2023-51764/cnnvd
- https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.htmlcnnvd
- https://github.com/duy-31/CVE-2023-51764cnnvd
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