Updated mod_auth_kerb packages that fix a security flaw and a bug in multiple realm handling are now available for CentOS Linux 4. This update has been rated as having low security impact by the CentOS Security Response Team.
mod_auth_kerb is module for the Apache HTTP Server designed to provide Kerberos authentication over HTTP. An off by one flaw was found in the way mod_auth_kerb handles certain Kerberos authentication messages. A remote client could send a specially crafted authentication request which could crash an httpd child process (CVE-2006-5989). A bug in the handling of multiple realms configured using the "KrbAuthRealms" directive has also been fixed. All users of mod_auth_kerb should upgrade to these updated packages, which contain backported patches that resolve these issues.
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