AWS-LC has PKCS7_verify Signature Validation Bypass
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- Security bypass
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-347.
Summary
### Summary AWS-LC is an open-source, general-purpose cryptographic library. ### Impact Improper signature validation in PKCS7_verify() in AWS-LC allows an unauthenticated user to bypass signature verification when processing PKCS7 objects with Authenticated Attributes. Customers of AWS services do not need to take action. aws-lc-sys contains code from AWS-LC. Applications using aws-lc-sys should upgrade to the most recent release of aws-lc-sys. #### Impacted versions: aws-lc-sys versions: >= 0.24.0, < 0.38.0 ### Patches The patch is included in v0.38.0 ### Workarounds There is no workaround. Applications using aws-lc-sys should upgrade to the most recent release of aws-lc-sys. ### Resources If there are any questions or comments about this advisory, contact [AWS/Amazon] Security via the [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [[email protected]](mailto:[email protected]). Please do not create a public GitHub issue.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | aws-lc-sys (crates.io) | 0.24.0 to before 0.38.0 | 0.38.0 | Patch available | GHSA-hfpc-8r3f-gw53 |
- aws-lc-sys (crates.io) Vendor— Affected 0.24.0 to before 0.38.0 Fixed in 0.38.0 Patch available GHSA-hfpc-8r3f-gw53
Remediation
- Fix · GHSA-hfpc-8r3f-gw53 aws-lc-sys (crates.io) Fixed in 0.38.0 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-hfpc-8r3f-gw53
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences