A new security update has been released for Gentoo Linux - PEAR Net_Traceroute: Command injection. Here the announcement:

Gentoo Linux Security Advisory GLSA 200911-06
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http://security.gentoo.org/
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Severity: High
Title: PEAR Net_Traceroute: Command injection
Date: November 26, 2009
Bugs: #294264
ID: 200911-06

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Synopsis
========

An input sanitation error in PEAR Net_Traceroute might allow remote
attackers to execute arbitrary commands.

Background
==========

PEAR Net_Traceroute is an OS independent wrapper class for executing
traceroute calls from PHP.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-php/PEAR-Net_Traceroute < 0.21.2 >= 0.21.2

Description
===========

Pasquale Imperato reported that the $host parameter to the traceroute()
function in Traceroute.php is not properly sanitized before being
passed to exec().

Impact
======

A remote attacker could exploit this vulnerability when user input is
passed directly to PEAR Net_Traceroute in a PHP script, possibly
resulting in the remote execution of arbitrary shell commands with the
privileges of the user running the affected PHP script.

Workaround
==========

Ensure that all data that is passed to the traceroute() function is
properly shell escaped (for instance using the escapeshellcmd()
function).

Resolution
==========

All PEAR Net_Traceroute users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=dev-php/PEAR-Net_Traceroute-0.21.2"

References
==========

[ 1 ] CVE-2009-4025
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4025

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200911-06.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5