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Fencer Vulns
low 2.3

CVE-2023-3674 json

Keylime: attestation failure when the quote's signature does not validate

published 2023-07-19 3 y ago modified 2026-06-17 4 mo ago also GHSA-g4wg-cfpf-9689 , PYSEC-2023-128 , EUVD-2023-0105

cvss
2.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits
0
none known

Summary

A flaw was found in the keylime attestation verifier, which fails to flag a device's submitted TPM quote as faulty when the quote's signature does not validate for some reason. Instead, it will only emit an error in the log without flagging the device as untrusted.

Patch / fix

  • pypi keylime 7.2.5
  • Red Hat Red Hat Enterprise Linux 9 0:7.3.0-13.el9_3
  • keylime RHEL 9 7.3.0-13.el9_3
  • keylime-base RHEL 9 7.3.0-13.el9_3
  • keylime-tenant RHEL 9 7.3.0-13.el9_3
  • keylime-selinux RHEL 9 7.3.0-13.el9_3
  • python3-keylime RHEL 9 7.3.0-13.el9_3
  • keylime-verifier RHEL 9 7.3.0-13.el9_3
  • keylime-registrar RHEL 9 7.3.0-13.el9_3

red hat advisories RHSA-2024:1139

  • keylime openSUSE Tumbleweed 7.11.0-1.1

opensuse advisories openSUSE-SU-2024:14051-1

  • keylime AlmaLinux 9 7.3.0-13.el9_3
  • keylime-base AlmaLinux 9 7.3.0-13.el9_3
  • keylime-tenant AlmaLinux 9 7.3.0-13.el9_3
  • keylime-selinux AlmaLinux 9 7.3.0-13.el9_3
  • python3-keylime AlmaLinux 9 7.3.0-13.el9_3
  • keylime-verifier AlmaLinux 9 7.3.0-13.el9_3
  • keylime-registrar AlmaLinux 9 7.3.0-13.el9_3

almalinux advisories ALSA-2024:1139

  • keylime Rocky Linux 9 7.3.0-13.el9_3

rocky linux advisories RLSA-2024:1139

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-3674 updated cvss 2.3

keylime: Attestation failure when the quote's signature does not validate

  • Red Hat Enterprise Linux AppStream (v. 9) keylime 7.3.0-13.el9_3, keylime-base 7.3.0-13.el9_3, keylime-tenant 7.3.0-13.el9_3, keylime-selinux 7.3.0-13.el9_3, python3-keylime 7.3.0-13.el9_3, keylime-verifier 7.3.0-13.el9_3, +1 more
    fixed: vendor fix RHSA-2024:1139

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.3 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
NVD 3.1 2.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
OSV 3.1 2.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
GitHub 3.1 2.3 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
pypi keylime
<7.2.5
7.2.5

Affected products

  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-1283 Mutable Attestation or Measurement Reporting Data

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.