NetCat CMS 3.12 HTML Injection

`*NetCat CMS 3.12 HTML Injection Security Vulnerabilities*  
  
  
Exploit Title: NetCat CMS 3.12 /catalog/search.php? q Parameter HTML  
Injection Security Vulnerabilities  
Product: NetCat CMS (Content Management System)  
Vendor: NetCat  
Vulnerable Versions: 3.12 3.0 2.4 2.3 2.2 2.1 2.0 1.1  
Tested Version: 3.12  
Advisory Publication: April 15, 2015  
Latest Update: April 15, 2015  
Vulnerability Type: Improper Input Validation [CWE-20]  
CVE Reference: *  
CVSS Severity (version 2.0):  
CVSS v2 Base Score: 4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:P/A:N) (legend)  
Impact Subscore: 2.9  
Exploitability Subscore: 8.6  
Credit: Wang Jing [Mathematics, Nanyang Technological University (NTU),  
Singapore]  
  
  
  
  
  
  
  
*Advisory Details:*  
  
  
*(1) Vendor & Product Description:*  
  
  
*Vendor:*  
NetCat  
  
  
*Product & Version:*  
NetCat  
3.12 3.0 2.4 2.3 2.2 2.1 2.0 1.1  
  
  
*Vendor URL & Download:*  
NetCat can be downloaded from here,  
http://netcat.ru/  
  
  
*Product Introduction:*  
NetCat.ru is russian local company. "NetCat designed to create an absolute  
majority of the types of sites: from simple "business card" with a minimum  
content to complex web-based systems, from corporate offices to online  
stores, libraries or media data - in other words, projects completely  
different directions and at any level of complexity. View examples of sites  
running on NetCat CMS can be in a special section."  
  
"Manage the site on the basis of NetCat can even inexperienced user,  
because it does not require knowledge of Internet technologies, programming  
and markup languages. NetCat constantly improving, adds new features. In  
the process of finalizing necessarily take into account the wishes of our  
partners and clients, as well as trends in Internet development. More than  
2,000 studios and private web developers have chosen for their projects is  
NetCat, and in 2013 sites, successfully working on our CMS, created more  
than 18,000."  
  
  
  
  
  
*(2) Vulnerability Details:*  
NetCat web application has a security bug problem. It can be exploited by  
HTML Injection attacks. Hypertext Markup Language (HTML) injection, also  
sometimes referred to as virtual defacement, is an attack on a user made  
possible by an injection vulnerability in a web application. When an  
application does not properly handle user supplied data, an attacker can  
supply valid HTML, typically via a parameter value, and inject their own  
content into the page. This attack is typically used in conjunction with  
some form of social engineering, as the attack is exploiting a code-based  
vulnerability and a user's trust.  
  
Several NetCat products 0-day vulnerabilities have been found by some other  
bug hunter researchers before. NetCat has patched some of them. Web  
Security Watch is an aggregator of security reports coming from various  
sources. It aims to provide a single point of tracking for all publicly  
disclosed security issues that matter. "Its unique tagging system enables  
you to see a relevant set of tags associated with each security alert for a  
quick overview of the affected products. What's more, you can now subscribe  
to an RSS feed containing the specific tags that you are interested in -  
you will then only receive alerts related to those tags." It has published  
suggestions, advisories, solutions details related to HTML vulnerabilities.  
  
*(2.1) *The vulnerability occurs at "catalog/search.php?" page with "&q"  
parameter.  
  
  
  
  
  
*References:*  
http://tetraph.com/security/html-injection/netcat-cms-3-12-html-injection/  
http://securityrelated.blogspot.com/2015/04/netcat-cms-312-html-injection-security.html  
http://www.inzeed.com/kaleidoscope/computer-web-security/netcat-cms-3-12-html-injection/  
http://diebiyi.com/articles/%E5%AE%89%E5%85%A8/netcat-cms-3-12-html-injection/  
https://computerpitch.wordpress.com/2015/04/14/netcat-cms-3-12-html-injection-security-vulnerabilities/  
http://www.irist.ir/author-Wang%20Jing.html  
http://lists.openwall.net/full-disclosure/2015/03/02/5  
http://www.websecuritywatch.com/multiple-http-response-splitting-crlf-xss-vulnerabilities-in-netcat-cms/  
http://permalink.gmane.org/gmane.comp.security.fulldisclosure/1676  
  
  
  
--  
Wang Jing,  
Division of Mathematical Sciences (MAS),  
School of Physical and Mathematical Sciences (SPMS),  
Nanyang Technological University (NTU),  
Singapore.  
http://www.tetraph.com/wangjing/  
https://twitter.com/justqdjing  
  
  
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