DokuWiki: PHP code injection

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200606-16 / DokuWiki
Release Date	June 14, 2006
Latest Revision	June 14, 2006: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-apps/dokuwiki	< 20060309-r1	>= 20060309-r1	All supported architectures

Related bugreports: #135623

Synopsis

A flaw in DokuWiki's spell checker allows for the execution of arbitrary PHP commands, even without proper authentication.

2. Impact Information

Background

DokuWiki is a simple to use wiki targeted at developer teams, workgroups and small companies.

Description

Stefan Esser discovered that the DokuWiki spell checker fails to properly sanitize PHP's "complex curly syntax".

Impact

A unauthenticated remote attacker may execute arbitrary PHP commands - and thus possibly arbitrary system commands - with the permissions of the user running the webserver that serves DokuWiki pages.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All DokuWiki users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/dokuwiki-20060309-r1"

4. References

Updated June 14, 2006

Summary: This is a Gentoo Linux Security Advisory

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