RUSTSEC-2026-0047: PKCS7_verify Signature Validation Bypass in AWS-LC #421
Description
| Details | |
|---|---|
| Package | aws-lc-sys |
| Version | 0.37.1 |
| URL | https://aws.amazon.com/security/security-bulletins/2026-005-AWS |
| Patched Versions | >=0.38.0 |
| Unaffected Versions | <0.24.0 |
| Aliases | CVE-2026-3338, GHSA-hfpc-8r3f-gw53, GHSA-jchq-39cv-q4wj |
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.
There is no workaround; applications using aws-lc-sys should upgrade to the
most recent release of aws-lc-sys.