CVE-2011-3348
mediumpriority · track · 25EPSS 0.224 · 98 %ileEUUSEPSS · scored 2026-10-23
The mod_proxy_ajp module in the Apache HTTP Server before 2.2.21, when used with mod_proxy_balancer in certain configurations, allows remote attackers to cause a denial of service (temporary "error state" in the backend server) via a malformed HTTP request.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- Fixedhttpd-0:2.2.15-9.el6_1.3.i686 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-0:2.2.15-9.el6_1.3.ppc64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-0:2.2.15-9.el6_1.3.s390x as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-0:2.2.15-9.el6_1.3.src as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-0:2.2.15-9.el6_1.3.x86_64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-debuginfo-0:2.2.15-9.el6_1.3.i686 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-debuginfo-0:2.2.15-9.el6_1.3.ppc as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-debuginfo-0:2.2.15-9.el6_1.3.ppc64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-debuginfo-0:2.2.15-9.el6_1.3.s390 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-debuginfo-0:2.2.15-9.el6_1.3.s390x as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-debuginfo-0:2.2.15-9.el6_1.3.x86_64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-devel-0:2.2.15-9.el6_1.3.i686 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-devel-0:2.2.15-9.el6_1.3.ppc as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-devel-0:2.2.15-9.el6_1.3.ppc64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-devel-0:2.2.15-9.el6_1.3.s390 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-devel-0:2.2.15-9.el6_1.3.s390x as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-devel-0:2.2.15-9.el6_1.3.x86_64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-manual-0:2.2.15-9.el6_1.3.noarch as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-tools-0:2.2.15-9.el6_1.3.i686 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-tools-0:2.2.15-9.el6_1.3.ppc64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-tools-0:2.2.15-9.el6_1.3.s390x as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-tools-0:2.2.15-9.el6_1.3.x86_64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedmod_ssl-1:2.2.15-9.el6_1.3.i686 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedmod_ssl-1:2.2.15-9.el6_1.3.ppc64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedmod_ssl-1:2.2.15-9.el6_1.3.s390x as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedmod_ssl-1:2.2.15-9.el6_1.3.x86_64 as a component of Red Hat Enterprise Linux Server (v. 6)redhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259
https://access.redhat.com/errata/RHSA-2011:1391 - Fixedhttpd-0:2.2.17-15.4.ep5.el5.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-0:2.2.17-15.4.ep5.el5.src as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-0:2.2.17-15.4.ep5.el5.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-0:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-0:2.2.17-15.4.ep5.el6.src as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-0:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-devel-0:2.2.17-15.4.ep5.el5.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-devel-0:2.2.17-15.4.ep5.el5.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-devel-0:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-devel-0:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-manual-0:2.2.17-15.4.ep5.el5.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-manual-0:2.2.17-15.4.ep5.el5.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-manual-0:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-manual-0:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-tools-0:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedhttpd-tools-0:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedmod_ssl-1:2.2.17-15.4.ep5.el5.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedmod_ssl-1:2.2.17-15.4.ep5.el5.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedmod_ssl-1:2.2.17-15.4.ep5.el6.i386 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - Fixedmod_ssl-1:2.2.17-15.4.ep5.el6.x86_64 as a component of Red Hat JBoss Enterprise Web Server 1 for RHEL 6 Serverredhat_csaf
Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258
https://access.redhat.com/errata/RHSA-2012:0542 - FixedRed Hat JBoss Web Server 1.0redhat_csaf
The References section of this erratum contains a download link (you must log in to download the update). Before applying the update, back up your existing JBoss Enterprise Web Server installation (including all applications and configuration files). The Apache HTTP Server must be restarted for this update to take effect.
https://access.redhat.com/errata/RHSA-2012:0543
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (50)
Products and version ranges known to be affected.
- redhat jboss enterprise web server= 1.0.0nvdUScpe:2.3:a:redhat:jboss_enterprise_web_server:*:*:*:*:*:*:*:*
- Red Hat JBoss Web Server 1.0all versionsfixedredhat_csafUScpe:/a:redhat:jboss_enterprise_web_server:1.0
advisories (3)
Vendor and ecosystem advisories describing this.
- RHSA-2011:1391Red Hat Security Advisory: httpd security and bug fix update2011-10-20csaf · redhat_csafUS
Updated httpd packages that fix two security issues and one bug are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
- RHSA-2012:0542Red Hat Security Advisory: httpd security and bug fix update2012-05-07csaf · redhat_csafUS
Updated httpd packages that fix multiple security issues and one bug are now available for JBoss Enterprise Web Server 1.0.2 for Red Hat Enterprise Linux 5 and 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
- RHSA-2012:0543Red Hat Security Advisory: httpd security and bug fix update2012-05-07csaf · redhat_csafUS
An update for the Apache HTTP Server component for JBoss Enterprise Web Server 1.0.2 that fixes multiple security issues and one bug is now available from the Red Hat Customer Portal. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (90)
External citations — patches, advisories, analysis.
- http://community.jboss.org/message/625307cnnvd
- http://httpd.apache.org/download.cgi#apache22Patchcnnvd
- http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.htmlcnnvd
- http://marc.info/?l=bugtraq&m=131731002122529&w=2cnnvd
- http://marc.info/?l=bugtraq&m=132033751509019&w=2cnnvd
- http://rhn.redhat.com/errata/RHSA-2012-0542.htmlcnnvd
- http://rhn.redhat.com/errata/RHSA-2012-0543.htmlcnnvd
- http://secunia.com/advisories/46013cnnvd
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