+++ This bug was initially created as a clone of Bug #172209 +++

The parse_str function in PHP 4.x up to 4.4.0 and 5.x up to 5.0.5, when called
with only one parameter, allows remote attackers to disable the
register_globals directive via inputs that cause a request to be terminated
due to the memory_limit setting, which causes PHP to set an internal flag that
enables register_globals and allows attackers to exploit vulnerabilities in
PHP applications that would otherwise be protected.

http://www.hardened-php.net/advisory_192005.78.html

This issue also affects FC3