ubuntu-security-announce Digest, Vol 92, Issue 3

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Today's Topics:

1. [USN-1436-1] Libtasn1 vulnerability (Marc Deslauriers)


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

Message: 1
Date: Wed, 02 May 2012 08:21:38 -0400
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1436-1] Libtasn1 vulnerability
Message-ID: <1335961298.2997.207.camel@mdlinux>
Content-Type: text/plain; charset="utf-8"

==========================================================================
Ubuntu Security Notice USN-1436-1
May 02, 2012

libtasn1-3 vulnerability
==========================================================================

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

- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS

Summary:

Libtasn1 could be made to crash or run programs as your login if it
received specially crafted input.

Software Description:
- libtasn1-3: Library to manage ASN.1 structures

Details:

Matthew Hall discovered that Libtasn1 incorrectly handled certain large
values. An attacker could exploit this with a specially crafted ASN.1
structure and cause a denial of service, or possibly execute arbitrary
code.

Update instructions:

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

Ubuntu 12.04 LTS:
libtasn1-3 2.10-1ubuntu1.1

Ubuntu 11.10:
libtasn1-3 2.9-4ubuntu0.1

Ubuntu 11.04:
libtasn1-3 2.7-1ubuntu1.1

Ubuntu 10.04 LTS:
libtasn1-3 2.4-1ubuntu0.1

Ubuntu 8.04 LTS:
libtasn1-3 1.1-1ubuntu0.1

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

References:
http://www.ubuntu.com/usn/usn-1436-1
CVE-2012-1569

Package Information:
https://launchpad.net/ubuntu/+source/libtasn1-3/2.10-1ubuntu1.1
https://launchpad.net/ubuntu/+source/libtasn1-3/2.9-4ubuntu0.1
https://launchpad.net/ubuntu/+source/libtasn1-3/2.7-1ubuntu1.1
https://launchpad.net/ubuntu/+source/libtasn1-3/2.4-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libtasn1-3/1.1-1ubuntu0.1


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