CVE-2011-1527

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.

How to fix CVE-2011-1527

To remediate CVE-2011-1527, upgrade the affected package to a fixed version below.

• Debian/krb5—upgrade to 1.10+dfsg~alpha1-1 or later

Is CVE-2011-1527 being exploited?

Low — EPSS is 2.6%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• from 0, < 1.10+dfsg~alpha1-1

References (1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2011-1527