Keylime
CVE-2022-1053
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
1DescriptionNVD
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,
AnalysisAI
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. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Technical ContextAI
This vulnerability is classified under CWE-20. 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, Affected products include: Keylime, Fedoraproject Fedora.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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In Keylime before 6.3.0, Revocation Notifier uses a fixed /tmp path for UNIX domain socket which can allow unprivileged
In Keylime before 6.3.0, unsanitized UUIDs can be passed by a rogue agent and can lead to log spoofing on the verifier a
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Authentication bypass in the Keylime registrar (versions 7.12.0 and later) lets unauthenticated network attackers perfor
A flaw was found in keylime 5.8.1 and older. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploita
In Keylime before 6.3.0, quote responses from the agent can contain possibly untrusted ZIP data which can lead to zip bo
A flaw was found in Keylime. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authenticati
A flaw was found in the Keylime registrar that could allow a bypass of the challenge-response protocol during agent regi
A vulnerability was found in keylime. Rated medium severity (CVSS 5.1), this vulnerability is no authentication required
A flaw was found in the keylime attestation verifier, which fails to flag a device's submitted TPM quote as faulty when
Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
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