Secunia Security Advisory - Liz0ziM has discovered a vulnerability in easy-CMS, which can be exploited by malicious people to compromise a vulnerable system.
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TITLE:
easy-CMS Multiple File Extensions Vulnerability
SECUNIA ADVISORY ID:
SA20733
VERIFY ADVISORY:
http://secunia.com/advisories/20733/
CRITICAL:
Highly critical
IMPACT:
System access
WHERE:
>From remote
SOFTWARE:
easy-CMS 0.x
http://secunia.com/product/10524/
DESCRIPTION:
Liz0ziM has discovered a vulnerability in easy-CMS, which can be
exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to an error in the handling of file
uploads where a filename has multiple file extensions. This can be
exploited to upload malicious script files inside the web root (e.g.
a PHP script) via the choose_file.php script.
Example:
[file].php.gif
Successful exploitation may allow execution of script code depending
on the HTTP server configuration (it requires e.g. an Apache server
with the "mod_mime" module installed).
The vulnerability has been confirmed in version 0.1.2. Other versions
may also be affected.
SOLUTION:
Edit the source code to ensure that files with multiple file
extensions cannot be uploaded.
Move the "Repositories" directory out of the web root.
PROVIDED AND/OR DISCOVERED BY:
Liz0ziM
ORIGINAL ADVISORY:
http://www.biyosecurity.be/bugs/easycms.txt
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