GHSA-qmqw-mpqp-mr54 Symfony Incorrect Access Control

• Packagist symfony/http-kernel: >= 2.3.19, < 2.3.29 → fixed in 2.3.29 • Packagist symfony/http-kernel: >= 2.5.4, < 2.5.12 → fixed in 2.5.12 • Packagist symfony/http-kernel: >= 2.6.0, < 2.6.8 → fixed in 2.6.8 • Packagist symfony/symfony: >= 2.3.19, < 2.3.29 → fixed in 2.3.29 • Packagist symfony/symfony: >= 2.4.9, <= 2.4.10 (no fix yet) • Packagist symfony/symfony: >= 2.5.4, < 2.5.12 → fixed in 2.5.12 • Packagist symfony/symfony: >= 2.6.0, < 2.6.8 → fixed in 2.6.8 • Packagist symfony/http-kernel: >= 2.4.9, <= 2.4.10 (no fix yet)

FragmentListener in the HttpKernel component in Symfony 2.3.19 through 2.3.28, 2.4.9 through 2.4.10, 2.5.4 through 2.5.11, and 2.6.0 through 2.6.7, when ESI or SSI support enabled, does not check if the `_controller` attribute is set, which allows remote attackers to bypass URL signing and security rules by including (1) no hash or (2) an invalid hash in a request to `/_fragment`. This issue has been fixed in Symfony 2.3.29, 2.5.12, and 2.6.8. Note that no fixes are provided for Symfony 2.4 as it's not maintained anymore.