CVE-2022-1053Critical· 9.1▾ MidnightTenant and Verifier might not use the same registrar data
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 50.1 · likelihood 0.3 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
1.4%
Keylime does not enforce that the agent registrar data is the same when the tenant uses it for validation of the EK and identity quote and the verifier for validating the integrity quote. This allows an attacker to use one AK, EK pair from a real TPM to pass EK validation and give the verifier an AK of a software TPM. A successful attack breaks the entire chain of trust because a not validated AK is used by the verifier. This issue is worse if the validation happens first and then the agent gets added to the verifier because the timing is easier and the verifier does not validate the regcount entry being equal to 1. At this time, there are no known workaround.
keylime < 6.4.0Upgrade to a patched release:
keylime 6.4.0Connected by shared product, vendor, weakness, or advisory.
CVE-2023-38200High· 7.5Keylime's registrar vulnerable to Denial-of-service attack via a single open connection
CVE-2023-38201Medium· 6.5Keylime registrar and (untrusted) Agent can be bypassed by an attacker
CVE-2026-1709Critical· 9.4A flaw was found in Keylime