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Cross-Site Scripting (XSS) in Redaxo

Advisory ID:HTB23098
Product:Redaxo
Vendor:Redaxo team
Vulnerable Versions:4.4 and probably prior
Tested Version:4.4
Advisory Publication:July 4, 2012 [without technical details]
Vendor Notification:July 4, 2012
Vendor Fix:July 23, 2012
Public Disclosure:July 25, 2012
Latest Update:July 23, 2012
Vulnerability Type:Cross-Site Scripting [CWE-79]
CVE Reference:CVE-2012-3869
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
 

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%28d ocument.cookie%29;%3C/script%3E
http://[host]/redaxo/index.php?page=templat e&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/


References:
[1] High-Tech Bridge Advisory HTB23098 - https://www.immuniweb.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.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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