ubuntu-security-announce Digest, Vol 110, Issue 7

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Today's Topics:

1. [USN-2025-1] Libav vulnerabilities (Marc Deslauriers)
2. [USN-2026-1] libvirt vulnerability (Marc Deslauriers)


----------------------------------------------------------------------

Message: 1
Date: Mon, 11 Nov 2013 11:03:48 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-2025-1] Libav vulnerabilities
Message-ID: <5280FFE4.3090700@canonical.com>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-2025-1
November 11, 2013

libav vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.10
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

Libav could be made to crash or run programs as your login if it opened a
specially crafted file.

Software Description:
- libav: Multimedia player, server, encoder and transcoder

Details:

It was discovered that Libav incorrectly handled certain malformed media
files. If a user were tricked into opening a crafted media file, an
attacker could cause a denial of service via application crash, or possibly
execute arbitrary code with the privileges of the user invoking the
program.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 13.10:
libavcodec53 6:0.8.9-0ubuntu0.13.10.1
libavformat53 6:0.8.9-0ubuntu0.13.10.1

Ubuntu 13.04:
libavcodec53 6:0.8.9-0ubuntu0.13.04.1
libavformat53 6:0.8.9-0ubuntu0.13.04.1

Ubuntu 12.10:
libavcodec53 6:0.8.9-0ubuntu0.12.10.1
libavformat53 6:0.8.9-0ubuntu0.12.10.1

Ubuntu 12.04 LTS:
libavcodec53 4:0.8.9-0ubuntu0.12.04.1
libavformat53 4:0.8.9-0ubuntu0.12.04.1

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References:
http://www.ubuntu.com/usn/usn-2025-1
https://launchpad.net/bugs/1249621

Package Information:
https://launchpad.net/ubuntu/+source/libav/6:0.8.9-0ubuntu0.13.10.1
https://launchpad.net/ubuntu/+source/libav/6:0.8.9-0ubuntu0.13.04.1
https://launchpad.net/ubuntu/+source/libav/6:0.8.9-0ubuntu0.12.10.1
https://launchpad.net/ubuntu/+source/libav/4:0.8.9-0ubuntu0.12.04.1


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Message: 2
Date: Mon, 11 Nov 2013 11:04:10 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-2026-1] libvirt vulnerability
Message-ID: <5280FFFA.2000207@canonical.com>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-2026-1
November 11, 2013

libvirt vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.10

Summary:

libvirt would allow unintended access privileges.

Software Description:
- libvirt: Libvirt virtualization toolkit

Details:

It was discovered that libvirt incorrectly checked privileges when the
virConnectDomainXMLToNative API function was used. An attacker could
possibly use this flaw to gain write privileges, contrary to expected
behaviour.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 13.10:
libvirt0 1.1.1-0ubuntu8.1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2026-1
CVE-2013-4401

Package Information:
https://launchpad.net/ubuntu/+source/libvirt/1.1.1-0ubuntu8.1


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