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Insecure Library Loading
Highly critical

FreeSchool File Inclusion and Cross-Site Scripting Vulnerabilities

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Release Date:  2009-09-04    Last Update:  2010-01-05    Views:  2,835

Secunia Advisory SA36605

Where:

From remote

Impact:

Cross Site Scripting, System access

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


Some vulnerabilities have been discovered in FreeSchool, which can be exploited by malicious people to conduct cross-site scripting attacks and compromise a vulnerable system.

1) Input passed to the "CLASSPATH" parameter in various scripts (e.g. biblioteca/bib_form.php, biblioteca/edi_form.php, calendario/cal_insert.php, odulistica/mdl_save.php, and other scripts) is not properly verified before being used to include files. This can be exploited to include arbitrary files from local or external resources.

2) Input passed via the "key_words" parameter to biblioteca/index.php (when "action" is set to "bib_searchs" and "method" is set to "searchs") 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 vulnerabilities are confirmed in version 1.1.0.


Solution:
Edit the source code to ensure that input is properly verified.

Provided and/or discovered by:
1) cr4wl3r
2) Drunken Danish Rednecks

Original Advisory:
1) http://milw0rm.com/exploits/9582
2) http://packetstormsecurity.org/0910-exploits/freeschool-xss.txt

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: FreeSchool File Inclusion and Cross-Site Scripting Vulnerabilities

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