Updated PHP packages that fix several security issues are now available for
Red Hat Application Stack v1.1.
This update has been rated as having important security impact by the Red
Hat Security Response Team.
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 the mbstring extension set global variables. A
script which used the mb_parse_str() function to set global variables could
be forced to enable the register_globals configuration option, possibly
resulting in global variable injection. (CVE-2007-1583)
A flaw was discovered in the way PHP's mail() function processed header
data. If a script sent mail using a Subject header containing a string from
an untrusted source, a remote attacker could send bulk e-mail to unintended
A heap based buffer overflow flaw was discovered in PHP's gd extension. A
script that could be forced to process WBMP images from an untrusted source
could result in arbitrary code execution. (CVE-2007-1001)
A buffer over-read flaw was discovered in PHP's gd extension. A script that
could be forced to write arbitrary strings using a JIS font from an
untrusted source could cause the PHP interpreter to crash. (CVE-2007-0455)
Users of PHP should upgrade to these updated packages which contain
backported patches to correct these issues.