CVE-2019-14431: Buffer Overflow

First published: Mon Jul 29 2019(Updated: )

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.

Credit: cve@mitre.org

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• vendor/matrixssl
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• version/matrixssl matrixssl/3.8.2
• version/matrixssl matrixssl/4.2.1