The session extension in PHP 4 before 4.4.5, and PHP 5 before 5.2.1, calculates the reference count for the session variables without considering the internal pointer from the session globals, which allows context-dependent attackers to execute arbitrary code via a crafted string in the session_register after unsetting HTTP_SESSION_VARS and _SESSION, which destroys the session data Hashtable.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Php | Php | 4.0 (including) | 4.0 (including) |
| Php | Php | 4.0-beta_4_patch1 (including) | 4.0-beta_4_patch1 (including) |
| Php | Php | 4.0-beta1 (including) | 4.0-beta1 (including) |
| Php | Php | 4.0-beta2 (including) | 4.0-beta2 (including) |
| Php | Php | 4.0-beta3 (including) | 4.0-beta3 (including) |
| Php | Php | 4.0-beta4 (including) | 4.0-beta4 (including) |
| Php | Php | 4.0-rc1 (including) | 4.0-rc1 (including) |
| Php | Php | 4.0-rc2 (including) | 4.0-rc2 (including) |
| Php | Php | 4.0.0 (including) | 4.0.0 (including) |
| Php | Php | 4.0.1 (including) | 4.0.1 (including) |
| Php | Php | 4.0.1-patch1 (including) | 4.0.1-patch1 (including) |
| Php | Php | 4.0.1-patch2 (including) | 4.0.1-patch2 (including) |
| Php | Php | 4.0.2 (including) | 4.0.2 (including) |
| Php | Php | 4.0.3 (including) | 4.0.3 (including) |
| Php | Php | 4.0.3-patch1 (including) | 4.0.3-patch1 (including) |
| Php | Php | 4.0.4 (including) | 4.0.4 (including) |
| Php | Php | 4.0.4-patch1 (including) | 4.0.4-patch1 (including) |
| Php | Php | 4.0.5 (including) | 4.0.5 (including) |
| Php | Php | 4.0.6 (including) | 4.0.6 (including) |
| Php | Php | 4.0.7 (including) | 4.0.7 (including) |
| Php | Php | 4.0.7-rc1 (including) | 4.0.7-rc1 (including) |
| Php | Php | 4.0.7-rc2 (including) | 4.0.7-rc2 (including) |
| Php | Php | 4.0.7-rc3 (including) | 4.0.7-rc3 (including) |
| Php | Php | 4.1.0 (including) | 4.1.0 (including) |
| Php | Php | 4.1.1 (including) | 4.1.1 (including) |
| Php | Php | 4.1.2 (including) | 4.1.2 (including) |
| Php | Php | 4.2 (including) | 4.2 (including) |
| Php | Php | 4.2.0 (including) | 4.2.0 (including) |
| Php | Php | 4.2.1 (including) | 4.2.1 (including) |
| Php | Php | 4.2.2 (including) | 4.2.2 (including) |
| Php | Php | 4.2.3 (including) | 4.2.3 (including) |
| Php | Php | 4.3.0 (including) | 4.3.0 (including) |
| Php | Php | 4.3.1 (including) | 4.3.1 (including) |
| Php | Php | 4.3.2 (including) | 4.3.2 (including) |
| Php | Php | 4.3.3 (including) | 4.3.3 (including) |
| Php | Php | 4.3.4 (including) | 4.3.4 (including) |
| Php | Php | 4.3.5 (including) | 4.3.5 (including) |
| Php | Php | 4.3.6 (including) | 4.3.6 (including) |
| Php | Php | 4.3.7 (including) | 4.3.7 (including) |
| Php | Php | 4.3.8 (including) | 4.3.8 (including) |
| Php | Php | 4.3.9 (including) | 4.3.9 (including) |
| Php | Php | 4.3.10 (including) | 4.3.10 (including) |
| Php | Php | 4.3.11 (including) | 4.3.11 (including) |
| Php | Php | 4.4.0 (including) | 4.4.0 (including) |
| Php | Php | 4.4.1 (including) | 4.4.1 (including) |
| Php | Php | 4.4.2 (including) | 4.4.2 (including) |
| Php | Php | 4.4.3 (including) | 4.4.3 (including) |
| Php | Php | 4.4.4 (including) | 4.4.4 (including) |
| Php | Php | 5.0-rc1 (including) | 5.0-rc1 (including) |
| Php | Php | 5.0-rc2 (including) | 5.0-rc2 (including) |
| Php | Php | 5.0-rc3 (including) | 5.0-rc3 (including) |
| Php | Php | 5.0.0 (including) | 5.0.0 (including) |
| Php | Php | 5.0.0-beta1 (including) | 5.0.0-beta1 (including) |
| Php | Php | 5.0.0-beta2 (including) | 5.0.0-beta2 (including) |
| Php | Php | 5.0.0-beta3 (including) | 5.0.0-beta3 (including) |
| Php | Php | 5.0.0-beta4 (including) | 5.0.0-beta4 (including) |
| Php | Php | 5.0.0-rc1 (including) | 5.0.0-rc1 (including) |
| Php | Php | 5.0.0-rc2 (including) | 5.0.0-rc2 (including) |
| Php | Php | 5.0.0-rc3 (including) | 5.0.0-rc3 (including) |
| Php | Php | 5.0.1 (including) | 5.0.1 (including) |
| Php | Php | 5.0.2 (including) | 5.0.2 (including) |
| Php | Php | 5.0.3 (including) | 5.0.3 (including) |
| Php | Php | 5.0.4 (including) | 5.0.4 (including) |
| Php | Php | 5.0.5 (including) | 5.0.5 (including) |
| Php | Php | 5.1.0 (including) | 5.1.0 (including) |
| Php | Php | 5.1.1 (including) | 5.1.1 (including) |
| Php | Php | 5.1.2 (including) | 5.1.2 (including) |
| Php | Php | 5.1.3 (including) | 5.1.3 (including) |
| Php | Php | 5.1.4 (including) | 5.1.4 (including) |
| Php | Php | 5.1.5 (including) | 5.1.5 (including) |
| Php | Php | 5.1.6 (including) | 5.1.6 (including) |
| Php | Php | 5.2.0 (including) | 5.2.0 (including) |