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.
https://github.com/keylime/keylime/security/advisories/GHSA-f4r5-q63f-gcww
https://github.com/keylime/keylime/commit/9e5ac9f25cd400b16d5969f531cee28290543f2a
https://bugzilla.redhat.com/show_bug.cgi?id=2222693