CVE-2022-0317: Improper Input Validation

February 1, 2022 (updated February 9, 2023)

An improper input validation vulnerability in go-attestation before 0.3.3 allows local users to provide a maliciously-formed Quote over no/some PCRs, causing AKPublic.Verify to succeed despite the inconsistency. Subsequent use of the same set of PCR values in Eventlog.Verify lacks the authentication performed by quote verification, meaning a local attacker could couple this vulnerability with a maliciously-crafted TCG log in Eventlog.Verify to spoof events in the TCG log, hence defeating remotely-attested measured-boot. We recommend upgrading to Version 0.4.0 or above.

References

github.com/advisories/GHSA-99cg-575x-774p
github.com/google/go-attestation/commit/82f2c9c2c76e1d3691d17ee78116d1d93a123788
github.com/google/go-attestation/security/advisories/GHSA-99cg-575x-774p
nvd.nist.gov/vuln/detail/CVE-2022-0317
pkg.go.dev/vuln/GO-2022-0294

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