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Flogr 2.5.6 Cross Site Scripting Vulnerability

Author
High-Tech Bridge
Risk
[
Security Risk Medium
]
0day-ID
0day-ID-19344
Category
web applications
Date add
06-09-2012
Platform
php
Product: Flogr
Vendor: Flogr
Vulnerable Version(s): 2.5.6 and probably prior
Tested Version: 2.5.6
Vendor Notification: August 15, 2012 
Public Disclosure: September 5, 2012 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2012-4336
CVSSv2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
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 discovered multiple vulnerabilities in Flogr, which can be exploited to perform Cross-Site Scripting (XSS) attacks.


1) Cross-Site Scripting (XSS) Vulnerabilities  in Flogr: CVE-2012-4336

1.1 Input appended to the URL after /index.php 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 website.

The following PoC demonstrates the vulnerability:

http://[host]/index.php/%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E/

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

1.2 Input passed via arbitrary GET parameter to /index.php is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in user's browser session in context of an affected website.

The following PoC demonstrates the vulnerability:

http://[host]/index.php?[any]=%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E



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References:

[1] High-Tech Bridge Advisory HTB23110 - https://www.htbridge.com/advisory/HTB23110 - Cross-Site Scripting (XSS) Vulnerabilities  in Flogr.
[2] Flogr - http://code.google.com/p/flogr/ - Flogr is a flexible script that displays your flickr photos in a customizable photo gallery you host on your website.
[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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