VULNERABILITY INTELLIGENCE

CVE-2011-1527

CVSS score7.8 HIGH
EPSS probability3.65%
CISA KEVNot currently listed
Published2011-10-20
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:C

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.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references