Multiple Vulnerabilities in Podcast Generator

Advisory ID:HTB22800
Product:Podcast Generator
Vendor:Alberto Betella
Vulnerable Versions:1.3 and probably prior
Tested Version:1.3
Advisory Publication:January 20, 2011 [without technical details]
Vendor Notification:January 20, 2011
Public Disclosure:February 3, 2011
Vulnerability Type:Cross-Site Scripting [CWE-79]
PHP File Inclusion [CWE-98]
Risk Level:High
CVSSv2 Base Scores:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Podcast Generator which could be exploited to perform cross-site scripting attacks, disclose potentially sensitive information and compromise vulnerable system.

1) Cross-site scripting vulnerability in Podcast Generator
The vulnerability exists due to input sanitation error in the "L_failedopentheme" parameter in "/core/themes.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website. Successful exploitation requires that register_globals is enabled.
Exploitation example:
p://[host]/core/themes.php?L_failedopentheme=%3Cscript%3Ealert%28%22XSS%22%2 9;%3C/script%3E

2) Local file inclusion in Podcast Generator
The vulnerability exists due to insufficient sanitation of input data in the "scriptlang" in core/language.php. A remote attacker can read arbitrary files on the target system suign directory traversal sequences with NULL byte.
Exploitation example:
http://[home]/core/language.php?scriptlang=../../../../../../../../etc/passw d%00

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Solution:
Upgrade to the most recent version.


References:
[1] High-Tech Bridge Advisory HTB22800 - https://www.immuniweb.com/advisory/HTB22800 - Multiple Vulnerabilities in Podcast Generator
[2] Podcast Generator - podcastgen.sourceforge.net - Podcast Generator is a free web based podcast publishing script written in PHP: upload media files (audio-video) via a web form along with episode information and automatically create podcast w3c-compliant feed including iTunes specific tags.
[3] 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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