CVE-2017-3731

HIGH

OpenSSL <1.1.0/1.0.2 - Use After Free

Title source: llm

Description

If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2, the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

References (20)

Scores

CVSS v3 7.5
EPSS 0.1040
EPSS Percentile 93.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE
CWE-125
Status draft

Affected Products (18)

openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
openssl/openssl
... and 3 more

Timeline

Published May 04, 2017
Tracked Since Feb 18, 2026