The lookup_lockout_policy function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the db2 (aka Berkeley DB) or LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that trigger certain process_as_req errors.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Link | Tags |
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http://www.mandriva.com/security/advisories?name=MDVSA-2011:159 | vendor advisory |
http://www.mandriva.com/security/advisories?name=MDVSA-2011:160 | vendor advisory |
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00009.html | vendor advisory |
http://www.kb.cert.org/vuls/id/659251 | third party advisory us government resource |
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt | vendor advisory |
http://www.redhat.com/support/errata/RHSA-2011-1379.html | vendor advisory |