Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : gnutls12, gnutls13, gnutls26 regression (USN-678-2)

Ubuntu Security Notice (C) 2008-2013 Canonical, Inc. / NASL script (C) 2009-2013 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

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.

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).

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N)

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 37045 ()

Bugtraq ID:

CVE ID: CVE-2008-4989