Buffer Over-read Affecting wolfssl/wolfssl package, versions [,5.6.6)


Severity

Recommended
0.0
low
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-UNMANAGED-WOLFSSLWOLFSSL-6305205
  • published29 Feb 2024
  • disclosed20 Feb 2024
  • creditLucca Hirschi,Steve Kremer,Max Ammann

Introduced: 20 Feb 2024

CVE-2023-6936  (opens in a new tab)
CWE-126  (opens in a new tab)

How to fix?

Upgrade wolfssl/wolfssl to version 5.6.6 or higher.

Overview

Affected versions of this package are vulnerable to Buffer Over-read when callback functions are enabled through the optional WOLFSSL_CALLBACKS flag. An attacker can read 5 bytes from the heap via malicious TLS 1.3 connection.

CVSS Scores

version 3.1