CVE-2022-2437

The Feed Them Social – for Twitter feed, Youtube and more plugin for WordPress is vulnerable to deserialization of untrusted input via the fts_url parameter in versions up to, and including 2.9.8.5. This makes it possible for unauthenticated attackers to call files using a PHAR wrapper that will deserialize the data and call arbitrary PHP Objects that can be used to perform a variety of malicious actions granted a POP chain is also present. It also requires that the attacker is successful in uploading a file with the serialized payload.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=2754749%40feed-them-social\u0026new=2754749%40feed-them-social\u0026sfp_email=\u0026sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/50bcea94-b12a-4b31-b0c1-bba834ea9bd0?source=cve
• https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2437
• https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=2754749%40feed-them-social\u0026new=2754749%40feed-them-social\u0026sfp_email=\u0026sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/50bcea94-b12a-4b31-b0c1-bba834ea9bd0?source=cve
• https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2437