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Ubuntu Security Notice USN-1896-1

Ubuntu Security Notice USN-1896-1
Posted Jul 3, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1896-1 - Florian Weimer discovered that the Module::Signature perl module incorrectly loaded unknown ciphers from relative directories. An attacker could possibly use this flaw to execute arbitrary code when a signature is verified.

tags | advisory, arbitrary, perl
systems | linux, ubuntu
advisories | CVE-2013-2145
SHA-256 | cd9b66aa4310380ddd651277bec994c6ab25f0629793f8f40a7b052a5a172fe4

Ubuntu Security Notice USN-1896-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1896-1
July 03, 2013

libmodule-signature-perl vulnerability
============================================================================

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

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

Module::Signature could be made to run programs if it verified a signature.

Software Description:
- libmodule-signature-perl: module to manipulate CPAN SIGNATURE files

Details:

Florian Weimer discovered that the Module::Signature perl module
incorrectly loaded unknown ciphers from relative directories. An attacker
could possibly use this flaw to execute arbitrary code when a signature is
verified.

Update instructions:

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

Ubuntu 13.04:
libmodule-signature-perl 0.68-1ubuntu0.13.04.1

Ubuntu 12.10:
libmodule-signature-perl 0.68-1ubuntu0.12.10.1

Ubuntu 12.04 LTS:
libmodule-signature-perl 0.68-1ubuntu0.12.04.1

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

References:
https://www.ubuntu.com/usn/usn-1896-1
CVE-2013-2145

Package Information:

https://launchpad.net/ubuntu/+source/libmodule-signature-perl/0.68-1ubuntu0.13.04.1

https://launchpad.net/ubuntu/+source/libmodule-signature-perl/0.68-1ubuntu0.12.10.1

https://launchpad.net/ubuntu/+source/libmodule-signature-perl/0.68-1ubuntu0.12.04.1
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