A security issue has been reported in pam_ssh, which can be exploited by malicious users to bypass certain security restrictions.
The security issue is caused due to pam_ssh not properly restricting the use of private keys with a blank password, even if the "allow_blank_password" option is disabled. This can be exploited to use private keys with blank passphrases by entering a random, non-blank passphrase when prompted.
The security issue is reported in version 1.91.
Solution: Update to version 1.92.
Provided and/or discovered by: The vendor credits Rob Henderson.
Original Advisory: http://sourceforge.net/project/shownotes.php?release_id=484376
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