CVE-2015-6251

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 19.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-08-24 · updated 2026-06-17

Description

Double free vulnerability in GnuTLS before 3.3.17 and 3.4.x before 3.4.4 allows remote attackers to cause a denial of service via a long DistinguishedName (DN) entry in a certificate.

Affected products

Debian Linux: 8.0
[UNKNOWN] gnutls: 3.3.0, 3.3.0-pre0, 3.3.1, 3.3.2, 3.3.3, 3.3.4 (+16)

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165286.html
http://lists.opensuse.org/opensuse-updates/2015-09/msg00001.html
http://www.debian.org/security/2015/dsa-3334
http://www.gnutls.org/security.html#GNUTLS-SA-2015-3
http://www.openwall.com/lists/oss-security/2015/08/10/1
http://www.openwall.com/lists/oss-security/2015/08/17/6
http://www.securityfocus.com/bid/76267
http://www.securitytracker.com/id/1033226
https://bugzilla.redhat.com/show_bug.cgi?id=1251902
https://gitlab.com/gnutls/gnutls/commit/272854367efc130fbd4f1a51840d80c630214e12
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165286.html
http://lists.opensuse.org/opensuse-updates/2015-09/msg00001.html

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