Phpok v6.1 was discovered to contain a deserialization vulnerability via the update_f() function in login_control.php. This vulnerability allows attackers to getshell via writing arbitrary files.
Weakness
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Phpok | Phpok | 6.1 (including) | 6.1 (including) |
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.