(RHSA-2007:0154) Important: php security update

PHP is an HTML-embedded scripting language commonly used with the Apache
HTTP Web server.

A denial of service flaw was found in the way PHP processed a deeply nested
array. A remote attacker could cause the PHP interpreter to crash by
submitting an input variable with a deeply nested array. (CVE-2007-1285)

A flaw was found in the way PHP’s unserialize() function processes data. If
a remote attacker is able to pass arbitrary data to PHP’s unserialize()
function, it may be possible for them to execute arbitrary code as the
apache user. (CVE-2007-1286)

A double free flaw was found in PHP’s session_decode() function. If a
remote attacker is able to pass arbitrary data to PHP’s session_decode()
function, it may be possible for them to execute arbitrary code as the
apache user. (CVE-2007-1711)

Users of PHP should upgrade to these updated packages which contain
backported patches to correct these issues.