An issue was discovered in the HttpFoundation component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. The PDOSessionHandler class allows storing sessions on a PDO connection. Under some configurations and with a well-crafted payload, it was possible to do a denial of service on a Symfony application without too much resources.
According to WASC, “Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.”
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Symfony | Sensiolabs | 2.7.0 (including) | 2.7.48 (excluding) |
| Symfony | Sensiolabs | 2.8.0 (including) | 2.8.41 (excluding) |
| Symfony | Sensiolabs | 3.3.0 (including) | 3.3.17 (excluding) |
| Symfony | Sensiolabs | 3.4.0 (including) | 3.4.11 (excluding) |
| Symfony | Sensiolabs | 4.0.0 (including) | 4.0.11 (excluding) |
| Symfony | Ubuntu | artful | * |
| Symfony | Ubuntu | bionic | * |
| Symfony | Ubuntu | upstream | * |