Ubuntu 8.04 LTS / 10.04 LTS / 10.10 / 11.04 / 11.10 : update-manager vulnerabilities (USN-1284-1)

Ubuntu Security Notice (C) 2011-2014 Canonical, Inc. / NASL script (C) 2011-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

David Black discovered that Update Manager incorrectly extracted the
downloaded upgrade tarball before verifying its GPG signature. If a
remote attacker were able to perform a man-in-the-middle attack, this
flaw could potentially be used to replace arbitrary files.
(CVE-2011-3152)

David Black discovered that Update Manager created a temporary
directory in an insecure fashion. A local attacker could possibly use
this flaw to read the XAUTHORITY file of the user performing the
upgrade. (CVE-2011-3154)

This update also adds a hotfix to Update Notifier to handle cases
where the upgrade is being performed from CD media.

Solution :

Update the affected auto-upgrade-tester, update-manager and / or
update-notifier packages.

Risk factor :

Medium / CVSS Base Score : 6.4
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N)

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 56971 ()

Bugtraq ID:

CVE ID: CVE-2011-3152
CVE-2011-3154