Interpretation conflict in ModSecurity (mod_security) 2.1.0 and earlier allows remote attackers to bypass request rules via application/x-www-form-urlencoded POST data that contains an ASCIIZ (0x00) byte, which mod_security treats as a terminator even though it is still processed as normal data by some HTTP parsers including PHP 5.2.0, and possibly parsers in Perl, and Python.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mod_security | Mod_security | 1.7 (including) | 1.7 (including) |
| Mod_security | Mod_security | 1.7.1 (including) | 1.7.1 (including) |
| Mod_security | Mod_security | 1.7.2 (including) | 1.7.2 (including) |
| Mod_security | Mod_security | 1.7.4 (including) | 1.7.4 (including) |
| Mod_security | Mod_security | 1.7.5 (including) | 1.7.5 (including) |
| Mod_security | Mod_security | 1.9.4 (including) | 1.9.4 (including) |
| Mod_security | Mod_security | 2.1 (including) | 2.1 (including) |
| Libapache-mod-security | Ubuntu | dapper | * |
| Libapache-mod-security | Ubuntu | edgy | * |
| Libapache-mod-security | Ubuntu | upstream | * |