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

Ubuntu Security Notice (C) 2008-2016 Canonical, Inc. / NASL script (C) 2009-2016 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).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

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