TITLE:
TikiWiki "topics_offset" Cross-Site Scripting Vulnerability

SECUNIA ADVISORY ID:
SA17521

VERIFY ADVISORY:
http://secunia.com/advisories/17521/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting, Exposure of system information

WHERE:
>From remote

SOFTWARE:
TikiWiki 1.x
http://secunia.com/product/3356/

DESCRIPTION:
Moritz Naumann has reported a vulnerability in TikiWiki, which can be
exploited by malicious people to conduct cross-site scripting
attacks.

Input passed to the "topics_offset" parameter in
"tiki-view_forum_thread.php" isn't properly sanitised before being
returned to the user. This can be exploited to execute arbitrary HTML
and script code in a user's browser session in context of an affected
site.

It is also possible to disclose the full path to
"tiki-view_forum_thread.php" by accessing it with an invalid
"topics_sort_mode" parameter.

The vulnerability has been reported in versions 1.9.x through 1.9.2.
Other versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
Moritz Naumann IT Consulting & Services

ORIGINAL ADVISORY:
http://moritz-naumann.com/adv/0003/tikiw/0003.txt

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