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DokuWiki Denial of Service and Command Injection
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Secunia Advisory:
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SA22192
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Release Date:
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2006-09-29
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Last Update:
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2006-10-03
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Popularity:
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7,324 views
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Critical:
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Highly critical
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Impact:
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DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Workaround
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| Software: | DokuWiki
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2006-5098
CVE-2006-5099
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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
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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