DokuWiki: Cross-site scripting vulnerability

Security Team  Contact Address

Updated April 12, 2007

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200704-08 / dokuwiki
Release Date April 12, 2007
Latest Revision April 12, 2007: 01
Impact low
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
www-apps/dokuwiki < 20061106 >= 20061106 All supported architectures

Related bugreports: #163781

Synopsis

DokuWiki is vulnerable to a cross-site scripting attack.

2.  Impact Information

Background

DokuWiki is a simple to use wiki aimed at creating documentation.

Description

DokuWiki does not sanitize user input to the GET variable 'media' in the fetch.php file.

Impact

An attacker could entice a user to click a specially crafted link and inject CRLF characters into the variable. This would allow the creation of new lines or fields in the returned HTTP Response header, which would permit the attacker to execute arbitrary scripts in the context of the user's browser.

3.  Resolution Information

Workaround

Replace the following line in lib/exe/fetch.php:

Code Listing 3.1: Workaround






    with
    




Code Listing 3.2: Workaround






Resolution



    All DokuWiki users should upgrade to the latest version:
    




Code Listing 3.3: Resolution


# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/dokuwiki-20061106"





4. 
            References