Beware of Deserialization Vulnerability in G5Theme ERE Recently Viewed Plugin

CVSScvssV3_1: 9.8

The G5Theme ERE Recently Viewed plugin, which is used by real estate websites to display recently viewed properties, contains a deserialization of untrusted data vulnerability. This vulnerability has been assigned the CVE identifier CVE-2024-24797 and has a CVSS base score of 9.8 out of 10, indicating its severity.

Deserialization vulnerabilities occur when untrusted data is deserialized, usually from JSON or XML, without proper validation. This allows an attacker to execute arbitrary code on the affected system by crafting a malicious serialized object.

In the G5Theme plugin, an attacker could exploit this vulnerability by submitting a specially crafted HTTP request containing a serialized PHP object with embedded PHP code. When this object is deserialized by the vulnerable code, the embedded PHP would be executed on the server with the privileges of the web server. This would allow the attacker to do things like upload malicious files, access admin panels, or steal sensitive data like user credentials or financial information.

To protect themselves, users of the affected G5Theme ERE Recently Viewed plugin should update to version 1.4 or later, which fixes this issue. Website owners should also ensure they are running the latest versions of all plugins and themes, and that PHP deserialization options are configured securely on their server. Being vigilant about applying security updates is key to avoiding exploitation of vulnerabilities like this.