Public Date:
CWE-662 -> CWE-362 -> CWE-119
649304: CVE-2010-3864 OpenSSL TLS extension parsing race condition

The MITRE CVE dictionary describes this issue as:

Multiple race conditions in ssl/t1_lib.c in OpenSSL 0.9.8f through 0.9.8o, 1.0.0, and 1.0.0a, when multi-threading and internal caching are enabled on a TLS server, might allow remote attackers to execute arbitrary code via client data that triggers a heap-based buffer overflow, related to (1) the TLS server name extension and (2) elliptic curve cryptography.

Find out more about CVE-2010-3864 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue does not affect the versions of OpenSSL as shipped with Red Hat Enterprise Linux versions before Enterprise Linux 6.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 7.6
Base Metrics AV:N/AC:H/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity High
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux version 6 (openssl) RHSA-2010:0888 2010-11-16


Red Hat would like to thank Rob Hulswit for reporting this issue.