Information Exposure Affecting amazon-efs-utils package, versions <0:3.0.0-4.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-AMZN2-AMAZONEFSUTILS-16081183
  • published16 Apr 2026
  • disclosed2 Mar 2026

Introduced: 2 Mar 2026

CVE-2026-3337  (opens in a new tab)
CWE-208  (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.

Observable timing discrepancy in AES-CCM decryption in AWS-LC allows an unauthenticated user to potentially determine authentication tag validity via timing analysis.

The impacted implementations are through the EVP CIPHER API: EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm.

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