National Vulnerability Database (NVD) National Vulnerability Database (CVE-2011-1527)

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Last updated: Tue May 21 21:14:42 EDT 2013

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Vulnerability Summary for CVE-2011-1527

Original release date:10/20/2011

Last revised:01/19/2012

Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:7.8 (HIGH) (AV:N/AC:L/Au:N/C:N/I:N/A:C) (legend)

Impact Subscore: 6.9

Exploitability Subscore: 10.0

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

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US-CERT Vulnerability Note: VU#659251

Name: VU#659251

Hyperlink:http://www.kb.cert.org/vuls/id/659251

External Source: REDHAT

Name: RHSA-2011:1379

Type: Advisory

Hyperlink:http://www.redhat.com/support/errata/RHSA-2011-1379.html

External Source: MANDRIVA

Name: MDVSA-2011:159

Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2011:159

External Source: CONFIRM

Name: http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt