NetCat CMS Multiple HTTP Response Splitting (CRLF) Security Vulnerabilities

2015.03.08
Credit: Wang Jing
Risk: Low
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-93

*NetCat CMS Multiple HTTP Response Splitting (CRLF) Security Vulnerabilities* Exploit Title: NetCat CMS Multiple CRLF Security Vulnerabilities Product: NetCat CMS (Content Management System) Vendor: NetCat Vulnerable Versions: 5.01 3.12 3.0 2.4 2.3 2.2 2.1 2.0 1.1 Tested Version: 3.12 Advisory Publication: Mar 07, 2015 Latest Update: Mar 07, 2015 Vulnerability Type: Improper Neutralization of CRLF Sequences ('CRLF Injection') [CWE-93] CVE Reference: * Credit: Wang Jing [Mathematics, Nanyang Technological University (NTU), Singapore] *Advisory Details:* *(1) Vendor & Product Description:* *Vendor:* NetCat *Product & Version:* NetCat 5.01 3.12 3.0 2.4 2.3 2.2 2.1 2.0 1.1 *Vendor URL & Download:* NetCat can be got 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 HTTP Response Splitting (CRLF) attacks. This could allow a remote attacker to insert arbitrary HTTP headers, which are included in a response sent to the server. If an application does not properly filter such a request, it could be used to inject additional headers that manipulate cookies, authentication status, or more. *(2.1)* The first code flaw occurs at "/post.php" page with "redirect_url" parameter by adding "%0d%0a%20". *(2.2)* The second code flaw occurs at "redirect.php?" page with "url" parameter by adding "%0d%0a%20". *References:* http://securityrelated.blogspot.com/2015/03/netcat-cms-multiple-http-response.html http://tetraph.com/security/http-response-splitting-vulnerability/netcat-cms-multiple-http-response-splitting-crlf-security-vulnerabilities/ http://www.inzeed.com/kaleidoscope/computer-web-security/netcat-cms-multiple-http-response-splitting-crlf-security-vulnerabilities/ http://diebiyi.com/articles/%E5%AE%89%E5%85%A8/netcat-cms-multiple-http-response-splitting-crlf-security-vulnerabilities/ https://itswift.wordpress.com/2015/03/07/netcat-cms-multiple-http-response-splitting-crlf-security-vulnerabilities/ http://seclists.org/fulldisclosure/2015/Mar/8 http://packetstormsecurity.com/files/130584/NetCat-CMS-5.01-Open-Redirect.html -- 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://plus.google.com/u/0/+JingWang-tetraph-justqdjing/posts


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