Mandriva Linux Security Advisory 2009-001 – A vulnerability was found by the Google Security Team with how OpenSSL checked the verification of certificates. An attacker in control of a malicious server or able to effect a man-in-the-middle attack, could present a malformed SSL/TLS signature from a certificate chain to a vulnerable client, which would then bypass the certificate validation. The updated packages have been patched to prevent this issue.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/73698/MDVSA-2009-001.txt
Source: https://packetstormsecurity.com/files/73698/Mandriva-Linux-Security-Advisory-2009-001.html