Description
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. Applications using AWS-LC should upgrade to AWS-LC version 1.69.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AWS | AWS-LC | 1.41.0 – < 1.69.0 | 1.69.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | amazon-efs-utils | 3.0.0-4.amzn2023 | ALAS2023-2026-1564 |
| Amazon Linux 2023 | mount-s3 | 1.22.2-1.amzn2023 | ALAS2023-2026-1510 |
| Amazon Linux 2 | amazon-efs-utils | 3.0.0-4.amzn2 | ALAS2-2026-3245 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| crates.io | aws-lc-sys | >= 0.24.0, < 0.38.0 | 0.38.0 | GHSA-hfpc-8r3f-gw53 |
Advisories 3
- ALAS2-2026-3245 Important: amazon-efs-utils security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Apr 13, 2026
- ALAS2023-2026-1564 Important: amazon-efs-utils security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 13, 2026
- ALAS2023-2026-1510 Important: mount-s3 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 1, 2026