DokuWiki: Cross-site scripting vulnerability

1. Gentoo Linux Security Advisory

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

CVE-2006-6965

Updated April 12, 2007

Summary: This is a Gentoo Linux Security Advisory

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