WordPress Core provides a first-time setup configuration script. Hosts serving this script with no access control allow attackers to complete the WordPress installation without authorization, which can result in the attacker gaining access to the WordPress installation.
- The attacker makes a GET request to the vulnerable host with public-facing WordPress installation script.
- The vulnerable host responds with an installation form containing a welcome message.
- The attacker completes the second-stage POST form, defining the WordPress username and password.
- The vulnerable server responds with confirmation of a successful installation.
The attacker takes advantage of the webserver and WordPress installation allowing public access to the installation script.
Alert Logic Coverage
Alert Logic® has evaluated its customer base for exposure to the exploit and has developed signatures for mitigating the threat depending on the security service in place.
The Network-Based Intrusion Detection System (IDS) has been updated with the new signatures for this exploit when detected via Alert Logic Threat Manager™. If this signature is detected, an incident is generated in the Alert Logic console.
Recommendations for Mitigation
Upgrade to a non-vulnerable version to mitigate this vulnerability.