Improper Verification of Cryptographic Signature Affecting amazon-efs-utils package, versions <0:3.0.0-4.amzn2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.01% (3rd percentile)

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  • Snyk IDSNYK-AMZN2-AMAZONEFSUTILS-16081283
  • published16 Apr 2026
  • disclosed2 Mar 2026

Introduced: 2 Mar 2026

CVE-2026-3338  (opens in a new tab)
CWE-347  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 amazon-efs-utils to version 0:3.0.0-4.amzn2 or higher.
This issue was patched in ALAS2-2026-3245.

NVD Description

Note: Versions mentioned in the description apply only to the upstream amazon-efs-utils package and not the amazon-efs-utils package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1