CVE-2019-14431

CRITICAL

MatrixSSL <4.2.1 - Buffer Overflow/RCE

Title source: llm

Description

In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages leading to a heap-based buffer overflow of up to 256 bytes and possible Remote Code Execution in parseSSLHandshake in sslDecode.c. During processing of a crafted packet, the server mishandles the fragment length value provided in the DTLS message.

References (1)

[Exploit, Issue Tracking, Third Party Advisory] https://github.com/matrixssl/matrixssl/issues/30

Scores

CVSS v3 9.8

EPSS 0.0550

EPSS Percentile 90.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-755 CWE-787

Status published

Affected Products (1)

matrixssl/matrixssl < 4.2.1

Timeline

Published Jul 29, 2019

Tracked Since Feb 18, 2026