The file-upload implementation in rfc1867.c in PHP before 5.4.0 does not properly handle invalid [ (open square bracket) characters in name values, which makes it easier for remote attackers to cause a denial of service (malformed $_FILES indexes) or conduct directory traversal attacks during multi-file uploads by leveraging a script that lacks its own filename restrictions.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Php | Php | * | 5.3.10 (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) |
| 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) |
| Php | Php | 5.2.12 (including) | 5.2.12 (including) |
| Php | Php | 5.2.13 (including) | 5.2.13 (including) |
| Php | Php | 5.2.14 (including) | 5.2.14 (including) |
| Php | Php | 5.2.15 (including) | 5.2.15 (including) |
| Php | Php | 5.2.16 (including) | 5.2.16 (including) |
| Php | Php | 5.2.17 (including) | 5.2.17 (including) |
| Php | Php | 5.3.0 (including) | 5.3.0 (including) |
| Php | Php | 5.3.1 (including) | 5.3.1 (including) |
| Php | Php | 5.3.2 (including) | 5.3.2 (including) |
| Php | Php | 5.3.3 (including) | 5.3.3 (including) |
| Php | Php | 5.3.4 (including) | 5.3.4 (including) |
| Php | Php | 5.3.5 (including) | 5.3.5 (including) |
| Php | Php | 5.3.6 (including) | 5.3.6 (including) |
| Php | Php | 5.3.7 (including) | 5.3.7 (including) |
| Php | Php | 5.3.8 (including) | 5.3.8 (including) |
| Php | Php | 5.3.9 (including) | 5.3.9 (including) |
| Red Hat Enterprise Linux 5 | RedHat | php-0:5.1.6-39.el5_8 | * |
| Red Hat Enterprise Linux 5 | RedHat | php53-0:5.3.3-13.el5_8 | * |
| Red Hat Enterprise Linux 6 | RedHat | php-0:5.3.3-14.el6_3 | * |
| Php5 | Ubuntu | hardy | * |
| Php5 | Ubuntu | lucid | * |
| Php5 | Ubuntu | maverick | * |
| Php5 | Ubuntu | natty | * |
| Php5 | Ubuntu | oneiric | * |
| Php5 | Ubuntu | precise | * |
| Php5 | Ubuntu | upstream | * |
Input validation is a frequently-used technique for checking potentially dangerous inputs in order to ensure that the inputs are safe for processing within the code, or when communicating with other components. Input can consist of:
Data can be simple or structured. Structured data can be composed of many nested layers, composed of combinations of metadata and raw data, with other simple or structured data. Many properties of raw data or metadata may need to be validated upon entry into the code, such as:
Implied or derived properties of data must often be calculated or inferred by the code itself. Errors in deriving properties may be considered a contributing factor to improper input validation.