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Redaxo 4.4 Cross Site Scripting

Redaxo 4.4 Cross Site Scripting
Posted Jul 25, 2012
Authored by High-Tech Bridge SA | Site htbridge.com

Redaxo version 4.4 suffers from a cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2012-3869
SHA-256 | 44fcafd5bf41a508f40719e15f1cb1569a6d62987e638d5f77a211a346b98692

Redaxo 4.4 Cross Site Scripting

Change Mirror Download
Advisory ID: HTB23098
Product: Redaxo
Vendor: Redaxo team
Vulnerable Version(s): 4.4 and probably prior
Tested Version: 4.4
Vendor Notification: 4 July 2012
Vendor Patch: 23 July 2012
Public Disclosure: 25 July 2012
Vulnerability Type: Cross-Site Scripting (XSS)
CVE Reference: CVE-2012-3869
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status: Fixed by Vendor
Risk Level: Medium
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 has discovered vulnerability in Redaxo, which can be exploited to perform Cross-Site Scripting (XSS) attacks.


1) Cross-Site Scripting (XSS) in Redaxo: CVE-2012-3869

1.1 Input passed via the "subpage" GET parameter to /redaxo/index.php (when "page" is set to "user" or "template") is not properly sanitised before being returned to the user.

This can be exploited to execute arbitrary HTML and script code in administrator's browser session in context of affected website.

The following PoC (Proof of Concept) demonstrate the vulnerability:


http://[host]/redaxo/index.php?page=user&subpage=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E
http://[host]/redaxo/index.php?page=template&subpage=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E


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Solution:

Apply vendor's patch: http://www.redaxo.org/files/sicherheitsupdate_4_3_und_4_4.zip
More Information:
http://www.redaxo.org/de/download/sicherheitshinweise/

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References:

[1] High-Tech Bridge Advisory HTB23098 - https://www.htbridge.com/advisory/HTB23098 - Cross-Site Scripting (XSS) in Redaxo.
[2] Redaxo - http://www.redaxo.org/ - PHP MySQL Open Source Content Management System.
[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.

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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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