CVE-2022-0317: Improper Input Validation in AKPublic.Verify in go-attestation
First published: Tue Jan 25 2022(Updated: )
### Impact An improper input validation vulnerability in go-attestation before 0.4.0 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. ### Patches This issue is resolved in version 0.4.0. If your usage of this library verifies PCRs using multiple quotes, make sure to use the new method `AKPublic.VerifyAll()` instead of `AKPublic.Verify`.
Credit: cve-coordination@google.com cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/github.com/google/go-attestation | <0.4.0 | 0.4.0 |
| Google Go-attestation | <0.3.3 |
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Reference Links
- https://github.com/google/go-attestation/security/advisories/GHSA-99cg-575x-774p
- https://github.com/google/go-attestation/commit/82f2c9c2c76e1d3691d17ee78116d1d93a123788
- https://nvd.nist.gov/vuln/detail/CVE-2022-0317
- https://pkg.go.dev/vuln/GO-2022-0294
- https://github.com/advisories/GHSA-99cg-575x-774p (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2022-0317.
What is the severity of CVE-2022-0317?
The severity of CVE-2022-0317 is medium with a severity value of 4.
What is the impact of CVE-2022-0317?
CVE-2022-0317 allows local users to provide a maliciously-formed Quote over no/some PCRs, causing `AKPublic.Verify` to succeed despite the inconsistency and subsequent use of the same set of PCR values in `Eventlog.Verify` lacks th…
What software is affected by CVE-2022-0317?
The affected software is go-attestation before version 0.4.0.
How do I fix CVE-2022-0317?
To fix CVE-2022-0317, upgrade to version 0.4.0 of go-attestation.
- collector/github-advisory-latest
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