Yii PHP Framework Vulnerable to Remote Code Execution – Upgrade Now!

CVSScvssV3_1: 8.1

The popular PHP web framework Yii has been found vulnerable to remote code execution attacks. Versions before 1.1.29 of Yii are affected.

Attackers can exploit this vulnerability by tricking a vulnerable Yii application into unserializing malicious input containing executable code. This allows the attacker to run arbitrary commands on the server hosting the vulnerable Yii app.

Unpickling or unserializing untrusted data is generally unsafe as it can deserialize and execute any PHP code contained within. In Yii versions before 1.1.29, user input was not validated properly before unpickling, enabling remote code execution.

If you have a Yii application, you should immediately upgrade to version 1.1.29 or later. This fixes the insecure unpickling and prevents remote attackers from taking control of your server. There is no other workaround, so upgrading is critical.

Always keep your software up-to-date to protect against known vulnerabilities. Regular patching and upgrading helps prevent hackers from compromising your systems through remote code execution and other attacks.