The Linear Congruential Generator (LCG) in PHP before 5.2.13 does not provide the expected entropy, which makes it easier for context-dependent attackers to guess values that were intended to be unpredictable, as demonstrated by session cookies generated by using the uniqid function.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Php | Php | * | 5.2.12 (including) |
| Php | Php | 5.2.0 (including) | 5.2.0 (including) |
| Php | Php | 5.2.1 (including) | 5.2.1 (including) |
| Php | Php | 5.2.2 (including) | 5.2.2 (including) |
| Php | Php | 5.2.3 (including) | 5.2.3 (including) |
| Php | Php | 5.2.4 (including) | 5.2.4 (including) |
| Php | Php | 5.2.5 (including) | 5.2.5 (including) |
| Php | Php | 5.2.6 (including) | 5.2.6 (including) |
| Php | Php | 5.2.7 (including) | 5.2.7 (including) |
| Php | Php | 5.2.8 (including) | 5.2.8 (including) |
| Php | Php | 5.2.9 (including) | 5.2.9 (including) |
| Php | Php | 5.2.10 (including) | 5.2.10 (including) |
| Php | Php | 5.2.11 (including) | 5.2.11 (including) |
| Red Hat Enterprise Linux 4 | RedHat | php-0:4.3.9-3.31 | * |
| Red Hat Enterprise Linux 5 | RedHat | php-0:5.1.6-27.el5_5.3 | * |
| Php5 | Ubuntu | dapper | * |
| Php5 | Ubuntu | hardy | * |
| Php5 | Ubuntu | intrepid | * |
| Php5 | Ubuntu | jaunty | * |
| Php5 | Ubuntu | karmic | * |
| Php5 | Ubuntu | upstream | * |