<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200411-33"> <title>TWiki: Arbitrary command execution</title> <synopsis> A bug in the TWiki search function allows an attacker to execute arbitrary commands with the permissions of the user running TWiki. </synopsis> <product type="ebuild">www-apps/twiki</product> <announced>2004-11-24</announced> <revised count="02">2006-09-08</revised> <bug>71035</bug> <access>remote</access> <affected> <package name="www-apps/twiki" auto="yes" arch="*"> <unaffected range="ge">20040902 </unaffected> <unaffected range="lt">20000000</unaffected> <vulnerable range="lt">20040902 </vulnerable> </package> </affected> <background> <p> TWiki is a Web-based groupware tool based around the concept of wiki pages that can be edited by anybody with a Web browser. </p> </background> <description> <p> 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. </p> </description> <impact type="high"> <p> 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). </p> </impact> <workaround> <p> There is no known workaround at this time. </p> </workaround> <resolution> <p> All TWiki users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=www-apps/twiki-20040902"</code> </resolution> <references> <uri link="http://twiki.org/cgi-bin/view/Codev/SecurityAlertExecuteCommandsWithSearch">TWiki Security Alert</uri> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1037">CAN-2004-1037</uri> </references> <metadata tag="requester" timestamp="2004-11-22T17:14:35Z"> koon </metadata> <metadata tag="submitter" timestamp="2004-11-22T23:25:58Z"> dmargoli </metadata> <metadata tag="bugReady" timestamp="2004-11-24T08:52:40Z"> jaervosz </metadata> </glsa>