CVE-2023-38201 — A flaw was found in the Keylime registrar that could allow a bypass of the chall
A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during agent registration. This issue may allow an attacker to impersonate an agent and hide the true status of a monitored machine if the fake agent is added to the verifier li
Published
2023-08-25T16:15:39.449Z
Last modified
2025-11-20T17:41:38.960Z
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
01What is this vulnerability?
A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during agent registration. This issue may allow an attacker to impersonate an agent and hide the true status of a monitored machine if the fake agent is added to the verifier list by a legitimate user, resulting in a breach of the integrity of the registrar database.
02Affected products
| Vendor | Product | Versions |
|---|
| Red Hat | Red Hat Enterprise Linux 9 | 0:6.5.2-6.el9_2 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-08-25T16:15:39.449Z
- Last modified: 2025-11-20T17:41:38.960Z
09References
- access.redhat.com — https://access.redhat.com/errata/RHSA-2023:5080
- access.redhat.com — https://access.redhat.com/security/cve/CVE-2023-38201
- bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=2222693
- github.com — https://github.com/keylime/keylime/commit/9e5ac9f25cd400b16d5969f531cee28290543f…
- github.com — https://github.com/keylime/keylime/security/advisories/GHSA-f4r5-q63f-gcww
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