GLSA-200709-01 : MIT Kerberos 5: Multiple vulnerabilities
Critical Nessus Plugin ID 26041
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200709-01 (MIT Kerberos 5: Multiple vulnerabilities)
A stack-based buffer overflow (CVE-2007-3999) has been reported in svcauth_gss_validate() of the RPC library of kadmind. Another vulnerability (CVE-2007-4000) has been found in kadm5_modify_policy_internal(), which does not check the return values of krb5_db_get_policy() correctly.
The RPC related vulnerability can be exploited by a remote unauthenticated attacker to execute arbitrary code with root privileges on the host running kadmind. The second vulnerability requires the remote attacker to be authenticated and to have 'modify policy' privileges. It could then also allow for the remote execution of arbitrary code.
There is no known workaround at this time.
SolutionAll MIT Kerberos 5 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-crypt/mit-krb5-1.5.3-r1'