Remote Code Execution in Ghost CMS 6.19.0

Ghost CMS version 6.19.0 contains a remote code execution vulnerability that allows an unauthenticated attacker to execute arbitrary commands on the underlying server. This vulnerability, documented as Exploit-DB entry 52676, provides a functional proof-of-concept for exploiting instances running this specific version. Given the prevalence of Ghost CMS in web hosting environments, this disclosure poses a significant risk to organizations managing their own instances. Defenders should monitor for unexpected child processes originating from the web server service account and verify that their installations are updated to a non-vulnerable version.

Impact

Successful exploitation allows for full system compromise, enabling attackers to gain persistent access, exfiltrate sensitive data, or deploy further malicious payloads such as web shells or ransomware within the host environment.

Recommendation

Prioritized actions for security operations and IT teams:

• Immediately update Ghost CMS instances to the latest stable release to mitigate this vulnerability.
• Audit web server logs for suspicious request patterns involving unexpected payloads or command injection syntax targeted at the Ghost CMS application.
• Implement egress filtering on the web server to block outbound connections to unknown or suspicious IP addresses, preventing potential reverse shell C2 communication.
• Monitor for anomalous process creation, specifically web server child processes spawning shells or system utilities.