CVE-2015-6251

Ubuntu Security Notice USN-2727-1

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Vulnerabilidad de liberación doble en GnuTLS en versiones anteriores a la 3.3.17 y 3.4.x versiones anteriores a 3.4.4, permite a atacantes remotos causar una denegación de servicio a través de una entrada DistinguishedName (DN) de gran longitud en un certificado.

It was discovered that GnuTLS incorrectly handled parsing CRL distribution points. A remote attacker could possibly use this issue to cause a denial of service, or execute arbitrary code. Kurt Roeckx discovered that GnuTLS incorrectly handled a long DistinguishedName (DN) entry in a certificate. A remote attacker could possibly use this issue to cause a denial of service, or execute arbitrary code. Various other issues were also addressed.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-08-17 CVE Reserved
2015-08-24 CVE Published
2024-08-06 CVE Updated
2025-06-08 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (10)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2015/08/10/1	Mailing List
http://www.openwall.com/lists/oss-security/2015/08/17/6	Mailing List
http://www.securityfocus.com/bid/76267	Vdb Entry
http://www.securitytracker.com/id/1033226	Vdb Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1251902	X_refsource_confirm
https://gitlab.com/gnutls/gnutls/commit/272854367efc130fbd4f1a51840d80c630214e12	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165286.html	2016-12-24
http://lists.opensuse.org/opensuse-updates/2015-09/msg00001.html	2016-12-24
http://www.debian.org/security/2015/dsa-3334	2016-12-24
http://www.gnutls.org/security.html#GNUTLS-SA-2015-3	2016-12-24

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.0 Search vendor "Gnu" for product "Gnutls" and version "3.3.0"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.0 Search vendor "Gnu" for product "Gnutls" and version "3.3.0"		pre0		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.1 Search vendor "Gnu" for product "Gnutls" and version "3.3.1"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.2 Search vendor "Gnu" for product "Gnutls" and version "3.3.2"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.3 Search vendor "Gnu" for product "Gnutls" and version "3.3.3"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.4 Search vendor "Gnu" for product "Gnutls" and version "3.3.4"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.5 Search vendor "Gnu" for product "Gnutls" and version "3.3.5"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.6 Search vendor "Gnu" for product "Gnutls" and version "3.3.6"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.7 Search vendor "Gnu" for product "Gnutls" and version "3.3.7"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.8 Search vendor "Gnu" for product "Gnutls" and version "3.3.8"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.9 Search vendor "Gnu" for product "Gnutls" and version "3.3.9"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.10 Search vendor "Gnu" for product "Gnutls" and version "3.3.10"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.11 Search vendor "Gnu" for product "Gnutls" and version "3.3.11"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.12 Search vendor "Gnu" for product "Gnutls" and version "3.3.12"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.13 Search vendor "Gnu" for product "Gnutls" and version "3.3.13"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.14 Search vendor "Gnu" for product "Gnutls" and version "3.3.14"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.15 Search vendor "Gnu" for product "Gnutls" and version "3.3.15"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.3.16 Search vendor "Gnu" for product "Gnutls" and version "3.3.16"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.4.0 Search vendor "Gnu" for product "Gnutls" and version "3.4.0"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.4.1 Search vendor "Gnu" for product "Gnutls" and version "3.4.1"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.4.2 Search vendor "Gnu" for product "Gnutls" and version "3.4.2"		-		Affected
Gnu Search vendor "Gnu"		Gnutls Search vendor "Gnu" for product "Gnutls"				3.4.3 Search vendor "Gnu" for product "Gnutls" and version "3.4.3"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected