CVE-2023-6936
MEDIUMwolfssl < 5.6.6 - Heap Buffer Over-Read via WOLFSSL_CALLBACKS
Title source: llmDescription
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).
References (2)
Core 2
Core References
Issue Tracking, Patch patch
https://github.com/wolfSSL/wolfssl/pull/6949/
Vendor Advisory vendor-advisory
https://www.wolfssl.com/docs/security-vulnerabilities/
Scores
CVSS v3
5.3
EPSS
0.0060
EPSS Percentile
43.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-125
CWE-126
Status
published
Products (1)
wolfssl/wolfssl
< 5.6.6
Published
Feb 20, 2024
Tracked Since
Feb 18, 2026