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Vulnerability record · CVE-2015-6251 · published 24 August 2015

CVE-2015-6251: Gnutls vulnerability

Gnu · Gnutls

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.

5.0 CVSS 2.0 Medium EPSS 19% · top 2.8%
5.0CVSS 2.0 base score
19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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 Vendor Advisory
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
http://www.debian.org/security/2015/dsa-3334
http://www.gnutls.org/security.html#GNUTLS-SA-2015-3 Vendor Advisory
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

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Source: NIST National Vulnerability Database (record CVE-2015-6251), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.