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Family: CGI abuses --> Category: destructive_attack
DokuWiki im_convert Arbitrary Code Execution Vulnerability Vulnerability Scan
Vulnerability Scan Summary
Executes arbitrary command via DocuWiki im_convert Feature
Detailed Explanation for this Vulnerability Test
Synopsis :
The remote web server contains a PHP script that is affected by
multiple vulnerabilities.
Description :
The remote host is running DokuWiki, an open-source wiki application
written in PHP.
The installed version of DokuWiki fails to properly sanitize input to
the 'w' and 'h' parameters of the 'lib/exe/fetch.php' script before
using it to execute a command when resizing images. An
unauthenticated attacker can leverage this issue to execute arbitrary
code on the remote host subject to the rights of the web server
user id.
In addition, the application reportedly does not limit the size of
images when resizing them, which can be exploited to churn through CPU
cycles and disk space on the affected host.
Note that successful exploitation of this issue requires that
DokuWiki's 'imconvert' configuration option be set
by default, it is
not.
See also :
http://bugs.splitbrain.org/?do=details&id=924
http://bugs.splitbrain.org/?do=details&id=926
http://www.freelists.org/archives/dokuwiki/09-2006/msg00278.html
Solution :
Upgrade to DokuWiki release 2006-03-09e / 2006-09-28 or later.
Threat Level:
High / CVSS Base Score : 7
(AV:R/AC:L/Au:NR/C:P/A:P/I:P/B:N)
Click HERE for more information and discussions on this network vulnerability scan.
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