Gentoo has issued an update for pam_ldap. This fixes a security issue, which can be exploited by malicious people to bypass certain security restrictions.

For more information:
SA22682

Solution
Update to "sys-auth/pam_ldap-183" or later.
Original Advisory
http://www.gentoo.org/security/en/glsa/glsa-200612-19.xml

Other references
Further details available to Secunia VIM customers

Deep Links
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