CVE-2023-6936 Affecting wolfssl package, versions <5.6.6-1.2


Severity

Recommended
low

Based on default assessment until relevant scores are available

    Threat Intelligence

    EPSS
    0.04% (10th percentile)

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  • Snyk ID SNYK-DEBIANUNSTABLE-WOLFSSL-6139105
  • published 23 Dec 2023
  • disclosed 20 Feb 2024

How to fix?

Upgrade Debian:unstable wolfssl to version 5.6.6-1.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

In wolfSSL prior to 5.6.6, if callback functions are enabled (via the WOLFSSL_CALLBACKS flag), then a malicious TLS client or network attacker can trigger a buffer over-read on the heap of 5 bytes (WOLFSSL_CALLBACKS is only intended for debugging).