CVE-2014-5352

krb5: gss_process_context_token() incorrectly frees context (MITKRB5-SA-2015-001)

Severity Score

9.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly maintain security-context handles, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via crafted GSSAPI traffic, as demonstrated by traffic to kadmind.

La función krb5_gss_process_context_token en lib/gssapi/krb5/process_context_token.c en la libraría libgssapi_krb5 en MIT Kerberos 5 (también conocido como krb5) hasta 1.11.5, 1.12.x hasta 1.12.2, y 1.13.x anterior a 1.13.1 no mantiene correctamente los manejos en el contexto de seguridad, lo que permite a usuarios remotos autenticados causar una denegación de servicio (uso después de liberación y doble liberación, y caída del demonio) o posiblemente ejecutar código arbitrario a través de trafico GSSAPI manipulado, tal y como fue demostrado por trafico a kadmind.

A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-08-19 CVE Reserved
2015-02-03 CVE Published
2023-03-21 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (16)

URL	Tag	Source
http://web.mit.edu/kerberos/advisories/2015-001-patch-r113.txt	X_refsource_confirm
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt	X_refsource_confirm
http://www.securityfocus.com/bid/72495	Vdb Entry

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151103.html	2020-01-21
http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151437.html	2020-01-21
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00011.html	2020-01-21
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00016.html	2020-01-21
http://lists.opensuse.org/opensuse-updates/2015-02/msg00044.html	2020-01-21
http://rhn.redhat.com/errata/RHSA-2015-0439.html	2020-01-21
http://rhn.redhat.com/errata/RHSA-2015-0794.html	2020-01-21
http://www.debian.org/security/2015/dsa-3153	2020-01-21
http://www.mandriva.com/security/advisories?name=MDVSA-2015:069	2020-01-21
http://www.ubuntu.com/usn/USN-2498-1	2020-01-21
https://github.com/krb5/krb5/commit/82dc33da50338ac84c7b4102dc6513d897d0506a	2020-01-21
https://access.redhat.com/security/cve/CVE-2014-5352	2015-04-09
https://bugzilla.redhat.com/show_bug.cgi?id=1179856	2015-04-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.11 Search vendor "Mit" for product "Kerberos 5" and version "1.11"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.11.1 Search vendor "Mit" for product "Kerberos 5" and version "1.11.1"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.11.2 Search vendor "Mit" for product "Kerberos 5" and version "1.11.2"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.11.3 Search vendor "Mit" for product "Kerberos 5" and version "1.11.3"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.11.4 Search vendor "Mit" for product "Kerberos 5" and version "1.11.4"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.11.5 Search vendor "Mit" for product "Kerberos 5" and version "1.11.5"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.12 Search vendor "Mit" for product "Kerberos 5" and version "1.12"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.12.1 Search vendor "Mit" for product "Kerberos 5" and version "1.12.1"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.12.2 Search vendor "Mit" for product "Kerberos 5" and version "1.12.2"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.13 Search vendor "Mit" for product "Kerberos 5" and version "1.13"		-		Affected