CVE-2011-1528

krb5: KDC denial of service vulnerabilities (MITKRB5-SA-2011-006)

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The krb5_ldap_lockout_audit function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, related to the locked_check_p function. NOTE: the Berkeley DB vector is covered by CVE-2011-4151.

La función krb5_ldap_lockout_audit en el Key Distribution Center (KDC) en MIT Kerberos 5 (también se conoce como krb5) versión 1.8 hasta 1.8.4 y versión 1.9 hasta 1.9.1, cuando se utiliza el back-end LDAP, permite a los atacantes remotos causar una denegación de servicio (fallo de aserción y salida de demonio) por medio de vectores no especificados, relacionados con la función locked_check_p. NOTA: El vector Berkeley DB está cubierto por CVE-2011-4151.

*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

Low

Authentication

None

Confidentiality

None

Integrity

None

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

2011-03-29 CVE Reserved
2011-10-20 CVE Published
2024-08-06 CVE Updated
2025-04-03 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (9)

URL	Tag	Source
http://www.kb.cert.org/vuls/id/659251	Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/krb5/+bug/715579	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00009.html	2020-01-21
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt	2020-01-21
http://www.mandriva.com/security/advisories?name=MDVSA-2011:159	2020-01-21
http://www.mandriva.com/security/advisories?name=MDVSA-2011:160	2020-01-21
http://www.redhat.com/support/errata/RHSA-2011-1379.html	2020-01-21
https://access.redhat.com/security/cve/CVE-2011-1528	2011-10-18
https://bugzilla.redhat.com/show_bug.cgi?id=737711	2011-10-18

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"				1.8 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"				1.9 Search vendor "Mit" for product "Kerberos 5" and version "1.9"		-		Affected
Mit Search vendor "Mit"		Kerberos 5 Search vendor "Mit" for product "Kerberos 5"				1.9.1 Search vendor "Mit" for product "Kerberos 5" and version "1.9.1"		-		Affected