Reflected Cross-Site Scripting (XSS) in e107

[High-Tech Bridge Security Research <advisory@xxxxxxxxxxxx>]

Advisory ID: HTB23220
Product: e107
Vendor: e107
Vulnerable Version(s): 2.0 alpha2 and probably prior
Tested Version: 2.0 alpha2
Advisory Publication:  June 18, 2014  [without technical details]
Vendor Notification: June 18, 2014 
Vendor Patch: June 27, 2014 
Public Disclosure: July 16, 2014 
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2014-4734
Risk Level: Low 
CVSSv2 Base Score: 2.6 (AV:N/AC:H/Au:N/C:N/I:P/A:N)
Solution Status: Fixed by Vendor
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 vulnerability in e107, which 
can be exploited to perform Cross-Site Scripting (XSS) attacks.

1) Reflected Cross-Site Scripting (XSS) in e107: CVE-2014-4734

The vulnerability exists due to insufficient sanitization of "type" HTTP GET 
parameter passed to "/e107_admin/db.php" script. A remote attacker can trick a 
logged-in administrator to follow a specially crafted link and execute 
arbitrary HTML and scripting code in administrator’s browser. 

Using advanced XSS techniques a remote attacker can gain complete access over 
administrator’s session and perform arbitrary actions as web application 
administrator. 

The following exploitation example displays JS pop-up with "immuniweb" word 
when the administrator hits the "submit" button:

http://[host]/e107_admin/db.php?mode=pref_editor&type=123%27%20onsubmit=%22alert%28%27immuniweb%27%29%3b%22%20a=%27

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Solution:

Update e107_admin/db.php file from GitHub.

More Information:
https://github.com/e107inc/e107/commit/f80e417bb3e7ab5c1a89ea9ddd2cd060f54464e1
https://github.com/e107inc/e107/commit/e3088a877f94ac465555173e28b2f7f4a4f6d5e8

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References:

[1] High-Tech Bridge Advisory HTB23220 - 
https://www.htbridge.com/advisory/HTB23220 - Reflected Cross-Site Scripting 
(XSS) in e107.
[2] e107 - http://e107.org - Powerful Website 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.
[5] ImmuniWeb® SaaS - https://www.htbridge.com/immuniweb/ - hybrid of manual 
web application penetration test and cutting-edge vulnerability scanner 
available online via a Software-as-a-Service (SaaS) model.

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Disclaimer: The information provided in this Advisory is provided "as is" and 
without any warranty of any kind. Details of this Advisory may be updated in 
order to provide as accurate information as possible. The latest version of the 
Advisory is available on web page [1] in the References.