The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. https://bugs.php.net/bug.php?id=60227 http://www.vuxml.org/freebsd/918f38cd-f71e-11e1-8bd8-0022156e8794.html

The following packages are affected: php5 php52 php53 CVE-2011-1398 The sapi_header_op function in main/SAPI.c in PHP before 5.3.11 does not properly handle %0D sequences (aka carriage return characters), which allows remote attackers to bypass an HTTP response-splitting protection mechanism via a crafted URL, related to improper interaction between the PHP header function and certain browsers, as demonstrated by Internet Explorer and Google Chrome.