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Vulnerability · Published May 6, 2022 · Assigned by redhat

CVE-2022-1053

Critical 9.1

In plain English

A critical-severity improper input validation in keylime. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)9.1Critical
Exploit odds (30 days)1.5%top 26.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPIkeylime6.4.0GHSA-jf66-3q76-h5p5
PyPIkeylime6.4.0PYSEC-2022-184

Affected products (as reported)

VendorProductVersions
n/a keylime Affects keylime v6.4.0 and prior, Fixed in – v6.4.0

Weakness: CWE-20

References