CVE-2023-38200

highpriority · track · 31EPSS 0.014 · 73 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.45% (73rd) EPSS

CVSS 7.5 · high

Is it mine?

40 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

A flaw was found in Keylime. Due to their blocking nature, the Keylime registrar is subject to a remote denial of service against its SSL connections. This flaw allows an attacker to exhaust all available connections.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedkeylime-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-base-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-base-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-base-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-base-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-registrar-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-registrar-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-registrar-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-registrar-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-selinux-0:6.5.2-6.el9_2.noarch 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-2023:5080
Fixedkeylime-tenant-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-tenant-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-tenant-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-tenant-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-verifier-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-verifier-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-verifier-0:6.5.2-6.el9_2.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-2023:5080
Fixedkeylime-verifier-0:6.5.2-6.el9_2.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-2023:5080
Fixedpython3-keylime-0:6.5.2-6.el9_2.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-2023:5080
Fixedpython3-keylime-0:6.5.2-6.el9_2.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-2023:5080
Fixedpython3-keylime-0:6.5.2-6.el9_2.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-2023:5080
Fixedpython3-keylime-0:6.5.2-6.el9_2.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-2023:5080

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · secalert@redhat.com USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · Red Hat Product Security US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-834USprimaryCWE-400USCWE-400USCWE-834US

affected products (40)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linux 9all versionscert_bundDEcpe:/o:redhat:enterprise_linux:9
Red Hat Red Hat Enterprise Linux 9< 0:6.5.2-6.el9_2enisa_euvdEU
fedoraproject fedora= 38nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
keylime keylimeall versionsnvdUScpe:2.3:a:keylime:keylime:*:*:*:*:*:*:*:*
redhat enterprise linux= 9.0nvdUScpe:2.3:o:redhat:enterprise_linux:*:*:*:*:*:*:*:*
redhat enterprise linux eus= 9.2nvdUScpe:2.3:o:redhat:enterprise_linux_eus:*:*:*:*:*:*:*:*
redhat enterprise linux for ibm z systems= 9.0_s390xnvdUScpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:*:*:*:*:*:*:*:*
redhat enterprise linux for ibm z systems eus= 9.2_s390xnvdUScpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:*:*:*:*:*:*:*:*
redhat enterprise linux for power little endian= 9.0_ppc64lenvdUScpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:*:*:*:*:*:*:*:*
redhat enterprise linux for power little endian eus= 9.0_ppc64lenvdUScpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:*:*:*:*:*:*:*:*
redhat enterprise linux server aus= 9.2nvdUScpe:2.3:o:redhat:enterprise_linux_server_aus:*:*:*:*:*:*:*:*
PyPI keylime< 7.4.0osvUSpkg:pypi/keylime
keylime-0:6.5.2-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)all versionsfixedredhat_csafUS
keylime-0:6.5.2-6.el9_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)all versionsfixedredhat_csafUS
keylime-0:6.5.2-6.el9_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)all versionsfixedredhat_csafUS
keylime-0:6.5.2-6.el9_2.src as a component of Red Hat Enterprise Linux AppStream (v. 9)all versionsfixedredhat_csafUS
keylime-0:6.5.2-6.el9_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)all versionsfixedredhat_csafUS
keylime-base-0:6.5.2-6.el9_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)all versionsfixedredhat_csafUS

showing 20 of 40

advisories (4)

Vendor and ecosystem advisories describing this.

RHSA-2023:5080Red Hat Security Advisory: keylime security update2023-09-12csaf · redhat_csafUS
An update for keylime 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-2023-1931Red Hat Enterprise Linux (Keylime): Schwachstelle ermöglicht Denial of ServiceDeutsch2023-08-01csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen.
GHSA-pg75-v6fp-8q59Keylime's registrar vulnerable to Denial-of-service attack via a single open connection2023-08-01ghsa · osvUS
### Impact Keylime `registrar` is prone to a simple denial of service attack in which an adversary opens a connection to the TLS port (by default, port `8891`) blocking further, legitimate connections. As long as the connection is open, the `registrar` is blocked and cannot serve any further clients (`agents` and `tenants`), which prevents normal operation. The problem does not affect the `verifier`. ### Patches Users should upgrade to release 7.4.0
PYSEC-2026-1489Keylime's registrar vulnerable to Denial-of-service attack via a single open connection2026-07-07vendor · osvUS
### Impact Keylime `registrar` is prone to a simple denial of service attack in which an adversary opens a connection to the TLS port (by default, port `8891`) blocking further, legitimate connections. As long as the connection is open, the `registrar` is blocked and cannot serve any further clients (`agents` and `tenants`), which prevents normal operation. The problem does not affect the `verifier`. ### Patches Users should upgrade to release 7.4.0

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd redhat_csaf NVD CVE.org MITRE

published 2023-07-24modified 2026-06-17

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+135 more

references (17)

External citations — patches, advisories, analysis.

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