ubuntu-security-announce Digest, Vol 98, Issue 10

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Today's Topics:

1. [USN-1640-1] libssh vulnerabilities (Marc Deslauriers)


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

Message: 1
Date: Mon, 26 Nov 2012 13:20:40 -0500
From: Marc Deslauriers <marc.deslauriers@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1640-1] libssh vulnerabilities
Message-ID: <50B3B2F8.5040605@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1640-1
November 26, 2012

libssh vulnerabilities
==========================================================================

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

- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS

Summary:

linssh could be made to crash or run programs if it received specially
crafted network traffic.

Software Description:
- libssh: A tiny C SSH library

Details:

Xi Wang and Florian Weimer discovered that libssh incorrectly handled
memory. A remote attacker could use this to cause libssh to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2012-4559, CVE-2012-4560, CVE-2012-4561, CVE-2012-4562)

Update instructions:

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

Ubuntu 12.10:
libssh-4 0.5.2-1ubuntu0.12.10.1

Ubuntu 12.04 LTS:
libssh-4 0.5.2-1ubuntu0.12.04.1

Ubuntu 11.10:
libssh-4 0.5.2-1ubuntu0.11.10.1

Ubuntu 10.04 LTS:
libssh-4 0.4.2-1ubuntu1.1

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

References:
http://www.ubuntu.com/usn/usn-1640-1
CVE-2012-4559, CVE-2012-4560, CVE-2012-4561, CVE-2012-4562

Package Information:
https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.12.10.1
https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.12.04.1
https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.11.10.1
https://launchpad.net/ubuntu/+source/libssh/0.4.2-1ubuntu1.1


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End of ubuntu-security-announce Digest, Vol 98, Issue 10
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