CVE-2024-28861

Symfony 1 is a community-driven fork of the 1.x branch of Symfony, a PHP framework for web projects. Starting in version 1.1.0 and prior to version 1.5.19, Symfony 1 has a gadget chain due to dangerous deserialization in sfNamespacedParameterHolder class that would enable an attacker to get remote code execution if a developer deserializes user input in their project. Version 1.5.19 contains a patch for the issue.

Weakness

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

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://github.com/FriendsOfSymfony1/symfony1/commit/0bd9d59c69221f49bfc8be8b871b79e12d7d171a
• https://github.com/FriendsOfSymfony1/symfony1/security/advisories/GHSA-pv9j-c53q-h433
• https://github.com/FriendsOfSymfony1/symfony1/commit/0bd9d59c69221f49bfc8be8b871b79e12d7d171a
• https://github.com/FriendsOfSymfony1/symfony1/security/advisories/GHSA-pv9j-c53q-h433