The strip_tags function in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, does not filter null (0) characters within tag names when restricting input to allowed tags, which allows dangerous tags to be processed by web browsers such as Internet Explorer and Safari, which ignore null characters and facilitate the exploitation of cross-site scripting (XSS) vulnerabilities.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Converged_communications_server | Avaya | 2.0 (including) | 2.0 (including) |
| Fedora_core | Redhat | core_1.0 (including) | core_1.0 (including) |
| Fedora_core | Redhat | core_2.0 (including) | core_2.0 (including) |
| Secure_linux | Trustix | 1.5 (including) | 1.5 (including) |
| Secure_linux | Trustix | 2.0 (including) | 2.0 (including) |
| Secure_linux | Trustix | 2.1 (including) | 2.1 (including) |
| Red Hat Enterprise Linux 3 | RedHat | php-0:4.3.2-11.1.ent | * |
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | RedHat | * | |
| Red Hat Enterprise Linux ES version 2.1 | RedHat | * | |
| Red Hat Enterprise Linux WS version 2.1 | RedHat | * | |
| Red Hat Linux Advanced Workstation 2.1 | RedHat | * | |
| Red Hat Stronghold 4 | RedHat | * | |
| Stronghold 4.0 for Red Hat Enterprise Linux AS (version 2.1) | RedHat | * |