Description
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the server:log listener (Symfony\Bridge\Monolog\Command\ServerLogCommand) binds to 0.0.0.0:9911 by default and processes each received frame with unserialize(base64_decode($message)) without authentication, integrity checks, or an allowed_classes allowlist, allowing any reachable host to submit attacker-chosen serialized PHP payloads that can crash the listener and may trigger object-injection gadget effects. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
symfony symfony
< 5.4.52affected>= 6.0.0-BETA1, < 6.4.40affected>= 7.0.0-BETA1, < 7.4.12affected>= 8.0.0-BETA1, < 8.0.12affected
symfony monolog-bridge
< 5.4.52affected>= 6.0.0-BETA1, < 6.4.40affected>= 7.0.0-BETA1, < 7.4.12affected>= 8.0.0-BETA1, < 8.0.12affected
References
- https://github.com/symfony/symfony/security/advisories/GHSA-m7v2-7gxm-vc2v ↗
- https://github.com/symfony/symfony/commit/0891b2f293896c488e26943dc034334364b77fc4 ↗
- https://github.com/symfony/symfony/releases/tag/v5.4.52 ↗
- https://github.com/symfony/symfony/releases/tag/v6.4.40 ↗
- https://github.com/symfony/symfony/releases/tag/v7.4.12 ↗
- https://github.com/symfony/symfony/releases/tag/v8.0.12 ↗