The sapi_header_op function in main/SAPI.c in PHP before 5.3.11 and
5.4.x before 5.4.0RC2 does not check for %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.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[internals] 20120203 [PHP-DEV] The case of HTTP response splitting protection in PHP
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