Description
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.
Remediation
References
Related Vulnerabilities
WordPress Plugin WordPress File Upload Arbitrary File Upload (3.4.0)
Oracle Application Server Credentials Management Errors Vulnerability (CVE-2002-2345)
WordPress 4.4.x Multiple Vulnerabilities (4.4 - 4.4.9)
WordPress Plugin Csv2WPeC Coupon Arbitrary File Upload (1.1)
WordPress Plugin Modern Events Calendar Lite Cross-Site Scripting (5.22.2)