CVE-2012-1016

krb5: PKINIT null pointer deref leads to DoS

Severity Score

5.0

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The pkinit_server_return_padata function in plugins/preauth/pkinit/pkinit_srv.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 attempts to find an agility KDF identifier in inappropriate circumstances, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted Draft 9 request.

La función pkinit_server_return_padata en plugins/preauth/pkinit/pkinit_srv.c en la implementación PKINIT en el Key Distribution Center (KDC) en MIT Kerberos 5 (también conocido como krb5) anterior a v1.10.4 intenta encontrar un identificador KDF en circunstancias inapropiadas, lo que permite a atacantes remotos provocar una denegación de servicio (referencia a puntero NULL y caída del servicio) a través de una solicitud Draft especialmente diseñada.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2012-02-07 CVE Reserved
2013-03-03 CVE Published
2023-03-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (6)

URL	Tag	Source
http://secunia.com/advisories/55040	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/krb5/krb5/commit/db64ca25d661a47b996b4e2645998b5d7f0eb52c	2021-02-02

URL	Date	SRC
http://krbdev.mit.edu/rt/Ticket/Display.html?id=7527	2021-02-02
http://web.mit.edu/kerberos/www/krb5-1.10	2021-02-02
https://access.redhat.com/security/cve/CVE-2012-1016	2013-03-18
https://bugzilla.redhat.com/show_bug.cgi?id=917840	2013-03-18

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"				< 1.10.4 Search vendor "Mit" for product "Kerberos 5" and version " < 1.10.4"		-		Affected