CVE-2012-1015

krb5: KDC daemon crash via free() of an uninitialized pointer

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The kdc_handle_protected_negotiation function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x before 1.9.5, and 1.10.x before 1.10.3 attempts to calculate a checksum before verifying that the key type is appropriate for a checksum, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized pointer free, heap memory corruption, and daemon crash) via a crafted AS-REQ request.

La función kdc_handle_protected_negotiation en Key Distribution Center (KDC) en MIT Kerberos 5 (también conocido como krb5) v1.8.x, v1.9.x anteriores a v1.9.5, y v1.10.x anteriores a v1.10.3 intenta calcula el "checksum" antes de verificar que el tipo de contraseña es apropiado para el "checksum", lo que permite a atacantes remotos ejecutar código o provocar una denegación de servicio (liberación de puntero no inicializado, corrupción de memoria dinámica y caída del demonio) a través de una petición AS-REQ.

Multiple vulnerabilities have been discovered in MIT Kerberos 5, allowing execution of arbitrary code or Denial of Service. Versions less than 1.11.4 are affected.

*Credits: N/A

CVSS Scores

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

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

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

2012-02-07 CVE Reserved
2012-08-06 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (7)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2012-001.txt	2020-01-21

URL	Date	SRC
http://lists.opensuse.org/opensuse-updates/2012-08/msg00016.html	2020-01-21
http://rhn.redhat.com/errata/RHSA-2012-1131.html	2020-01-21
http://www.debian.org/security/2012/dsa-2518	2020-01-21
http://www.mandriva.com/security/advisories?name=MDVSA-2012:120	2020-01-21
https://access.redhat.com/security/cve/CVE-2012-1015	2012-07-31
https://bugzilla.redhat.com/show_bug.cgi?id=838012	2012-07-31

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"				1.8 Search vendor "Mit" for product "Kerberos 5" and version "1.8"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.1 Search vendor "Mit" for product "Kerberos 5" and version "1.8.1"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.2 Search vendor "Mit" for product "Kerberos 5" and version "1.8.2"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.3 Search vendor "Mit" for product "Kerberos 5" and version "1.8.3"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.4 Search vendor "Mit" for product "Kerberos 5" and version "1.8.4"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.5 Search vendor "Mit" for product "Kerberos 5" and version "1.8.5"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.8.6 Search vendor "Mit" for product "Kerberos 5" and version "1.8.6"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.9.4 Search vendor "Mit" for product "Kerberos 5" and version "1.9.4"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.10 Search vendor "Mit" for product "Kerberos 5" and version "1.10"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.10.1 Search vendor "Mit" for product "Kerberos 5" and version "1.10.1"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.10.2 Search vendor "Mit" for product "Kerberos 5" and version "1.10.2"		-		Affected