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DokuWiki Denial of Service and Command Injection Advisory Available in Danish 

Secunia Advisory: SA22192  
Release Date: 2006-09-29
Last Update: 2006-10-03

Critical:
Highly critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Workaround

Software:DokuWiki

CVE reference:CVE-2006-5098 (Secunia mirror)
CVE-2006-5099 (Secunia mirror)



Description:
Some vulnerabilities have been reported in DokuWiki, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.

Input passed to the "w" and "h" parameters in lib/exec/fetch.php is not properly sanitised before being passed as resize parameters to the "convert" application. This can be exploited to cause a DoS due to excessive CPU and memory consumption by passing very large numbers, or to inject arbitrary shell commands by passing specially crafted strings to the "w" and "h" parameter.

Successful exploitation requires that the "$conf[imconvert]" option is set.

Solution:
Update to version 2006-03-09e.
http://www.splitbrain.org/projects/dokuwiki

Provided and/or discovered by:
DoS vulnerability reported by Thomas Kindler.
Command injection reported by the vendor.

Changelog:
2006-10-03: Added CVE references.

Original Advisory:
http://bugs.splitbrain.org/?do=details&id=924
http://bugs.splitbrain.org/?do=details&id=926



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

8 Related Secunia Security Advisories

1. DokuWiki "spell_utf8test()" Cross-Site Scripting
2. DokuWiki "media" CRLF Injection Vulnerability
3. DokuWiki "TARGET_FN" Directory Traversal Vulnerability
4. DokuWiki Content Disclosure and Script Insertion
5. DokuWiki Spell Checker Code Execution Vulnerability
6. DokuWiki Mediamanager EXIF Data Cross-Site Scripting Vulnerability
7. DokuWiki Unspecified ACL Sensitive Information Disclosure
8. DokuWiki File Upload Vulnerability


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If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

Ideas, suggestions, and other feedback are most welcome.








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