CVE-2022-3366

The PublishPress Capabilities WordPress plugin before 2.5.2, PublishPress Capabilities Pro WordPress plugin before 2.5.2 unserializes the content of imported files, which could lead to PHP object injection attacks by administrators, on multisite WordPress configurations. Successful exploitation in this case requires other plugins with a suitable gadget chain to be present on the site.

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://wpscan.com/vulnerability/72639924-e7a7-4f7d-bd50-015d05ffd4fb
• https://wpscan.com/vulnerability/72639924-e7a7-4f7d-bd50-015d05ffd4fb