CMS WordPress Google-Maps-By-Daniel-Martyn RCE

Version 1.0 of the WordPress plugin, google-maps-by-daniel-martyn, is vulnerable to remote code execution (RCE). The plugin writes user data to the file version.php, which can be accessed by malicious users.

Exploitation

Stages

1. The attacker sends an HTTP POST request to the vulnerable WordPress plugin with PHP code in the body. The server writes the attacker’s PHP code to the file version.php.
2. The server replies with an HTTP 200 OK and the HTML character encoded PHP payload in the response body.
3. The attacker sends an HTTP GET request to access and execute version.php, achieving RCE.

Prerequisites

The vulnerable file can be accessed directly by unauthenticated attackers.

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.

Detection of this threat is provided via Alert Logic ActiveWatch for Web Security Manager service. Depending on your deployment of Web Security Manager, you will receive an incident (for out-of-band deployment) or the threat will be actively blocked and rejected (for the inline Web Security Manager Premier deployment) if an exploit attempt is observed.

Recommendations for Mitigation

To mitigate the vulnerability, upgrade to a non-vulnerable version of the plugin.