Cross-Site Scripting (XSS) in WikkaWiki

[High-Tech Bridge Security Research <advisory@xxxxxxxxxxxx>]

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.