CVE-2013-6449

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 21.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-12-23 · updated 2026-06-17
Weakness: CWE-310

Description

The ssl_get_algorithm2 function in ssl/s3_lib.c in OpenSSL before 1.0.2 obtains a certain version number from an incorrect data structure, which allows remote attackers to cause a denial of service (daemon crash) via crafted traffic from a TLS 1.2 client.

Affected products

OpenSSL: through 1.0.1e; 1.0.0, 1.0.0-beta1, 1.0.0-beta2, 1.0.0-beta3, 1.0.0-beta4, 1.0.0-beta5 (+18)

References

http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=ca989269a2876bae79393bd54c3e72d49975fc75
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124833.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124854.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124858.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00006.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00009.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00012.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00031.html
http://rhn.redhat.com/errata/RHSA-2014-0015.html
http://rhn.redhat.com/errata/RHSA-2014-0041.html

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