CVE-2014-9421

krb5: kadmind doubly frees partial deserialization results (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 auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c 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 handle partial XDR deserialization, 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 malformed XDR data, as demonstrated by data sent to kadmind.

La función auth_gssapi_unwrap_data en lib/rpc/auth_gssapi_misc.c 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 maneja correctamente la deserialización XDR parcial, 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 datos XDR malformados, tal y como fue demostrado mediante datos enviados a kadmind.

A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets.

*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

2014-12-26 CVE Reserved
2015-02-04 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://www.securityfocus.com/bid/72496	Vdb Entry
https://github.com/krb5/krb5/commit/a197e92349a4aa2141b5dff12e9dd44c2a2166e3	X_refsource_confirm

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://web.mit.edu/kerberos/advisories/MITKRB5-SA-2015-001.txt	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://access.redhat.com/security/cve/CVE-2014-9421	2015-04-09
https://bugzilla.redhat.com/show_bug.cgi?id=1179857	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