DokuWiki: Shell command injection and Denial of Service

1. Gentoo Linux Security Advisory

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

Related bugreports: #149266

DokuWiki is vulnerable to shell command injection and Denial of Service attacks when using ImageMagick.

2. Impact Information

DokuWiki is a wiki targeted at developer teams, workgroups and small companies. It does not use a database backend.

Input validation flaws have been discovered in the image handling of fetch.php if ImageMagick is used, which is not the default method.

A remote attacker could exploit the flaws to execute arbitrary shell commands with the rights of the web server daemon or cause a Denial of Service.

3. Resolution Information

There is no known workaround at this time.

All DokuWiki users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4. References

Page updated September 28, 2006

Summary: This is a Gentoo Linux Security Advisory

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