CVE-2011-1527

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

Severity Score

7.8

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.

El plug-in kdb_ldap en el centro de distribución de claves (KDC) en MIT Kerberos 5 (krb5) v1.9 a v1.9.1, cuando el back end LDAP es utilizado, permite a atacantes remotos provocar una denegación de servicio (puntero a NULL y caída del demonio) a través de una operación de kinit en la cadena incorrecta, en relación con la is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, y las funciones process_as_req.

*Credits: N/A

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
2011-10-19 CVE Published
2024-08-06 CVE Updated
2024-11-05 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (7)

URL	Tag	Source
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629558	X_refsource_confirm
http://www.kb.cert.org/vuls/id/659251	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
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.redhat.com/support/errata/RHSA-2011-1379.html	2020-01-21
https://access.redhat.com/security/cve/CVE-2011-1527	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"				1.9 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