HTTP Response-Splitting Vulnerability in PHP

CVE-2011-1398 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

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.

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