Timing Attack Affecting aws-lc-sys package, versions >=0.14.0 <0.38.0


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-RUST-AWSLCSYS-15374486
  • published4 Mar 2026
  • disclosed3 Mar 2026
  • creditJoshua Rogers

Introduced: 3 Mar 2026

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

How to fix?

Upgrade aws-lc-sys to version 0.38.0 or higher.

Overview

Affected versions of this package are vulnerable to Timing Attack via the EVP_aes_128_ccm, EVP_aes_192_ccm, and EVP_aes_256_ccm implementations. An attacker can infer the validity of authentication tags by measuring response times during decryption operations.

CVSS Base Scores

version 4.0
version 3.1