1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200402-01 / PHP |
| Release Date | February 07, 2004 |
| Latest Revision | February 07, 2004: 01 |
| Impact | normal |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| dev-php/mod_php | < 4.3.4-r4 | >= 4.3.4-r4 | All supported architectures |
Related bugreports: #39952
If the server configuration "php.ini" file has "register_globals = on" and a request is made to one virtual host (which has "php_admin_flag register_globals off") and the next request is sent to the another virtual host (which does not have the setting) global variables may leak and may be used to exploit the site.
PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.
If the server configuration "php.ini" file has "register_globals = on" and a request is made to one virtual host (which has "php_admin_flag register_globals off") and the next request is sent to the another virtual host (which does not have the setting) through the same apache child, the setting will persist.
Depending on the server and site, an attacker may be able to exploit global variables to gain access to reserved areas, such as MySQL passwords, or this vulnerability may simply cause a lack of functionality. As a result, users are urged to upgrade their PHP installations.
Gentoo ships PHP with "register_globals" set to "off" by default.
This issue affects both servers running Apache 1.x and servers running Apache 2.x.
No immediate workaround is available; a software upgrade is required.
All users are recommended to upgrade their PHP installation to 4.3.4-r4:
Code Listing 3.1: Resolution |
# emerge sync # emerge -pv ">=dev-php/mod_php-4.3.4-r4" # emerge ">=dev-php/mod_php-4.3.4-r4" |