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Re: Multiple XSS in KnowledgeTree Community Edition

15.01.2012 18:30, Henri Salo ÐÐÑÐÑ:
On Wed, Jan 11, 2012 at 11:50:25AM +0100, advisory@xxxxxxxxxxx wrote:
Advisory ID: HTB23065
Reference: https://www.htbridge.ch/advisory/multiple_vulnerabilities_in_knowledgetree_community_edition.html
Product: KnowledgeTree Commercial and Community Editions
Vendor: KnowledgeTree Inc. ( http://knowledgetree.org )
Vulnerable Version: and probably prior
Tested Version:
Vendor Notification: 21 December 2011
Vendor Patch: 23 December 2011
Vulnerability Type: XSS
Status: Fixed by Vendor
Risk Level: Medium
Credit: High-Tech Bridge SA Security Research Lab ( https://www.htbridge.ch/advisory/ )

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in KnowledgeTree Community Edition, which can be exploited to perform cross-site scripting attacks.

Input appended to the URL after multiple files is not 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

The following PoC code is available:


Successful exploitation of this vulnerabilities requires that Apache's directive "AcceptPathInfo" is set to "on" or "default" (default value is "default").


Apply Vendor patch:

Disclaimer: 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 the web page in Reference field.
Main page says: "KnowledgeTree Community Edition is unsupported, untested software and not designed for production use. KnowledgeTree Inc. does not warrant this software in any way." and atest version is 3.7, which is released December 2009. Could you give me the URL where they responded to your contact and fixed this vulnerability?

Even their https://issues.knowledgetree.com/ says "Your KnowledgeTree account has been suspended."

If one does fill their form and download this they are still serving 3.7 version. In download-page there is also link http://www.scribd.com/doc/23362922/What%E2%80%99s-New-in-KnowledgeTree-3-7 to "What's new"-page, which is only about Commercial Edition.

Quality product..

- Henri Salo


We have managed to contact the Vendor by sourceforge website:



High-Tech Bridge SA Security Research Lab