CVE-2019-15651

CRITICAL

wolfSSL 4.1.0 - Heap-Based Buffer Over-Read in DecodeCertExtensions

Title source: llm

Description

wolfSSL 4.1.0 has a one-byte heap-based buffer over-read in DecodeCertExtensions in wolfcrypt/src/asn.c because reading the ASN_BOOLEAN byte is mishandled for a crafted DER certificate in GetLength_ex.

References (1)

Core 1

Core References

Third Party Advisory x_refsource_misc

https://github.com/wolfSSL/wolfssl/issues/2421

Scores

CVSS v3 9.8

EPSS 0.0101

EPSS Percentile 58.9%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-125

Status published

Products (1)

wolfssl/wolfssl 4.1.0

Published Aug 26, 2019

Tracked Since Feb 18, 2026