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Gentoo Linux Security Advisory GLSA 200411-33
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http://security.gentoo.org/
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Severity: High
Title: TWiki: Arbitrary command execution
Date: November 24, 2004
Bugs: #71035
ID: 200411-33
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Synopsis
========
A bug in the TWiki search function allows an attacker to execute
arbitrary commands with the permissions of the user running TWiki.
Background
==========
TWiki is a Web-based groupware tool based around the concept of wiki
pages that can be edited by anybody with a Web browser.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-apps/twiki < 20040902 >= 20040902
Description
===========
The TWiki search function, which uses a shell command executed via the
Perl backtick operator, does not properly escape shell metacharacters
in the user-provided search string.
Impact
======
An attacker can insert malicious commands into a search request,
allowing the execution of arbitrary commands with the privileges of the
user running TWiki (usually the Web server user).
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All TWiki users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/twiki-20040902"
References
==========
[ 1 ] TWiki Security Alert
http://twiki.org/cgi-bin/view/Codev/SecurityAlertExecuteCommandsWithSearch
[ 2 ] CAN-2004-1037
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1037
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200411-33.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
http://bugs.gentoo.org.
License
=======
Copyright 2004 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/2.0
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