CVE-2011-1527

MIT Kerberos 5 1.9-1.9.1 - Denial of Service via Incorrect Realm Case in KDC LDAP Plugin

Title source: llm
STIX 2.1

Description

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.

References (5)

Core 5
Core References
Issue Tracking x_refsource_confirm
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629558
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2011:159
US Government Resource third-party-advisory x_refsource_cert-vn
http://www.kb.cert.org/vuls/id/659251
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2011-1379.html

Scores

EPSS 0.0262
EPSS Percentile 85.8%

Details

CWE
CWE-20
Status published
Products (2)
mit/kerberos_5 1.9
mit/kerberos_5 1.9.1
Published Oct 20, 2011
Tracked Since Feb 18, 2026