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Cross-Site Scripting (XSS) in WikkaWiki
From: High-Tech Bridge Security Research <advisory () htbridge com>
Date: Wed, 11 Sep 2013 12:43:33 +0200 (CEST)

Advisory ID: HTB23170
Product: WikkaWiki
Vendor: Wikka Development Team
Vulnerable Version(s): 1.3.4 and probably prior
Tested Version: 1.3.4
Vendor Notification: August 21, 2013 
Vendor Patch: August 31, 2013 
Public Disclosure: September 11, 2013 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2013-5586
Risk Level: Medium 
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status: Fixed by Vendor
Discovered and Provided: High-Tech Bridge Security Research Lab ( https://www.htbridge.com/advisory/ ) 

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Advisory Details:

High-Tech Bridge Security Research Lab discovered vulnerability in WikkaWiki, which can be exploited to perform 
Cross-Site Scripting (XSS) attacks against users of vulnerable application.


1) Cross-Site Scripting (XSS) in WikkaWiki: CVE-2013-5586

The vulnerability exists due to insufficient sanitisation of user-supplied data in "wakka" HTTP GET parameter passed to 
"/sql/" URL. A remote attacker can trick a logged-in user to open a specially crafted link and execute arbitrary HTML 
and script code in browser in context of the vulnerable website.

The exploitation example below uses JavaScript "alert()" function to display user's cookies:

http://[host]/sql/?wakka=sql&wakka=%22onmouseover=%22javascript:alert%28document.cookie%29;%22%3Elink%3C/a%3E

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Solution:

Update to Wikka 1.3.4-p1

More Information:
http://docs.wikkawiki.org/WhatsNew
https://wush.net/trac/wikka/ticket/1152

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References:

[1] High-Tech Bridge Advisory HTB23170 - https://www.htbridge.com/advisory/HTB23170 - Cross-Site Scripting (XSS) in 
WikkaWiki.
[2] WikkaWiki - http://www.wikkawiki.org - WikkaWiki is a flexible, standards-compliant and lightweight wiki engine 
written in PHP, which uses MySQL to store pages.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public 
use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE 
is a formal list of software weakness types.
[5] ImmuniWeb® - http://www.htbridge.com/immuniweb/ - is High-Tech Bridge's proprietary web application security 
assessment solution with SaaS delivery model that combines manual and automated vulnerability testing.

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Disclaimer: The information provided in this Advisory is provided "as is" and without any warranty of any kind. Details 
of this Advisory may be updated in order to provide as accurate information as possible. The latest version of the 
Advisory is available on web page [1] in the References.


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