CVE-2022-2442

The Migration, Backup, Staging – WPvivid plugin for WordPress is vulnerable to deserialization of untrusted input via the path parameter in versions up to, and including 0.9.74. This makes it possible for authenticated attackers with administrative privileges to call files using a PHAR wrapper that will deserialize 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/browser/wpvivid-backuprestore/trunk/includes/staging/class-wpvivid-staging.php?rev=2749419#L1747
• https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/trunk/includes/staging/class-wpvivid-staging.php?rev=2749419#L1783
• https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=2766112%40wpvivid-backuprestore%2Ftrunk%2Fincludes%2Fstaging%2Fclass-wpvivid-staging.php\u0026new=2766112%40wpvivid-backuprestore%2Ftrunk%2Fincludes%2Fstaging%2Fclass-wpvivid-staging.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b7e2ca2e-c495-47f8-9c18-da5ba73d9e70?source=cve
• https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2442
• https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/trunk/includes/staging/class-wpvivid-staging.php?rev=2749419#L1747
• https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/trunk/includes/staging/class-wpvivid-staging.php?rev=2749419#L1783
• https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=2766112%40wpvivid-backuprestore%2Ftrunk%2Fincludes%2Fstaging%2Fclass-wpvivid-staging.php\u0026new=2766112%40wpvivid-backuprestore%2Ftrunk%2Fincludes%2Fstaging%2Fclass-wpvivid-staging.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b7e2ca2e-c495-47f8-9c18-da5ba73d9e70?source=cve
• https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2442