DokuWiki: Arbitrary command execution — GLSA 200609-10

Vulnerabilities in some accessory scripts of DokuWiki allow remote code execution.

Affected Packages

www-apps/dokuwiki on all architectures
Affected versions < 20060309d
Unaffected versions >= 20060309d

Background

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

Description

"rgod" discovered that DokuWiki doesn't sanitize the X-FORWARDED-FOR HTTP header, allowing the injection of arbitrary contents - such as PHP commands - into a file. Additionally, the accessory scripts installed in the "bin" DokuWiki directory are vulnerable to directory traversal attacks, allowing to copy and execute the previously injected code.

Impact

A remote attacker may execute arbitrary PHP (and thus probably system) commands with the permissions of the user running the process serving DokuWiki pages.

Workaround

Disable remote access to the "bin" subdirectory of the DokuWiki installation. Remove the directory if you don't use the scripts in there.

Resolution

All DokuWiki users should upgrade to the latest version:

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

References

Release Date
September 14, 2006

Latest Revision
September 14, 2006: 01

Severity
high

Exploitable
remote

Bugzilla entries