PhpMyAdmin is a free software tool written in PHP, intended to handle the administration of MySQL over the Web. The vulnerability is in the preg_replace function, because the information submitted by the user can be spliced into the first parameter.
Before PHP 5.4.7, the first parameter of preg_replace could be truncated with \0 and the change search pattern to \e. It can cause remote code execution vulnerability.
Affected versions:
- 4.0.x version before 4.0.10.16
- 4.4.x version before 4.4.15.7
- 4.6.x version before 4.6.3 (actually because this version requires PHP5.5+, this vulnerability cannot be reproduced)
Execute following commands to start PHP 5.3 + Apache + phpMyAdmin 4.4.15.6:
docker-compose up -d
After start, visit http://your-ip:8080 and you will see the login page of phpMyAdmin. Log in with root:root.
This vulnerability requires login and the permission to write data.
We use this POC(https://www.exploit-db.com/exploits/40185/) to reproduce the vulnerability.
./cve-2016-5734.py -c 'system(id);' -u root -p root -d test http://your-ip:8080/
Result:
