Ubuntu Update for gnutls12, gnutls13, gnutls26 regression USN-678-2

Ubuntu Update for Linux kernel vulnerabilities USN-678-2
Please Install the Updated Packages.
USN-678-1 fixed a vulnerability in GnuTLS. The upstream patch introduced a regression when validating certain certificate chains that would report valid certificates as untrusted. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Martin von Gagern discovered that GnuTLS did not properly verify certificate chains when the last certificate in the chain was self-signed. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to view sensitive information. (CVE-2008-4989)
gnutls12, gnutls13, gnutls26 regression on Ubuntu 6.06 LTS , Ubuntu 7.10 , Ubuntu 8.04 LTS , Ubuntu 8.10