ubuntu-security-announce Digest, Vol 99, Issue 10

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Today's Topics:

1. [USN-1674-1] Libav vulnerabilities (Marc Deslauriers)
2. [USN-1675-1] FFmpeg vulnerabilities (Marc Deslauriers)
3. [USN-1676-1] AppArmor update (Jamie Strandboge)


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Message: 1
Date: Wed, 19 Dec 2012 08:47:20 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1674-1] Libav vulnerabilities
Message-ID: <50D1C568.4070909@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1674-1
December 19, 2012

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

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

- Ubuntu 11.10

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 11.10:
libavcodec53 4:0.7.6-0ubuntu0.11.10.2
libavformat53 4:0.7.6-0ubuntu0.11.10.2

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1674-1
CVE-2012-2772, CVE-2012-2775, CVE-2012-2777, CVE-2012-2779,
CVE-2012-2784, CVE-2012-2786, CVE-2012-2788, CVE-2012-2789,
CVE-2012-2790, CVE-2012-2793, CVE-2012-2794, CVE-2012-2798,
CVE-2012-2800, CVE-2012-2801

Package Information:
https://launchpad.net/ubuntu/+source/libav/4:0.7.6-0ubuntu0.11.10.2


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Message: 2
Date: Wed, 19 Dec 2012 08:47:42 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1675-1] FFmpeg vulnerabilities
Message-ID: <50D1C57E.4050302@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1675-1
December 19, 2012

ffmpeg vulnerabilities
==========================================================================

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

- Ubuntu 10.04 LTS

Summary:

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

Software Description:
- ffmpeg: multimedia player, server and encoder

Details:

It was discovered that FFmpeg 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 10.04 LTS:
libavcodec52 4:0.5.9-0ubuntu0.10.04.2
libavformat52 4:0.5.9-0ubuntu0.10.04.2

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1675-1
CVE-2012-2777, CVE-2012-2784, CVE-2012-2788, CVE-2012-2801

Package Information:
https://launchpad.net/ubuntu/+source/ffmpeg/4:0.5.9-0ubuntu0.10.04.2


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Message: 3
Date: Wed, 19 Dec 2012 16:45:35 -0600
From: Jamie Strandboge <jamie@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1676-1] AppArmor update
Message-ID: <50D2438F.2040601@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"


==========================================================================
Ubuntu Security Notice USN-1676-1
December 19, 2012

AppArmor update
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10

Summary:

A weakness was discovered in the example AppArmor profile for
chromium-browser.

Software Description:
- apparmor: Linux security system

Details:

Dan Rosenberg discovered that the example AppArmor profile for
chromium-browser could be escaped by calling xdg-settings with a crafted
environment.

Update instructions:

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

Ubuntu 12.04 LTS:
apparmor-profiles 2.7.102-0ubuntu3.7

Ubuntu 11.10:
apparmor-profiles 2.7.0~beta1+bzr1774-1ubuntu2.2

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1676-1
https://launchpad.net/bugs/1045986

Package Information:
https://launchpad.net/ubuntu/+source/apparmor/2.7.102-0ubuntu3.7

https://launchpad.net/ubuntu/+source/apparmor/2.7.0~beta1+bzr1774-1ubuntu2.2




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