CVE-2011-1527

Name	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs	646367

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
krb5 (PTS)	buster	1.17-3+deb10u3	fixed
	buster (security)	1.17-3+deb10u2	fixed
	bullseye	1.18.3-6+deb11u1	fixed
	bookworm, sid	1.20-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Debian Bugs
krb5	source	lenny	(not affected)
krb5	source	squeeze	(not affected)
krb5	source	(unstable)	1.10+dfsg~alpha1-1	low	646367

[squeeze] - krb5 <not-affected> (Introduced in 1.9)
[lenny] - krb5 <not-affected> (Introduced in 1.9)