Header Spoofing Vulnerability in Phusion Passenger

CVE-2015-7519 · MEDIUM Severity

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

agent/Core/Controller/SendRequest.cpp in Phusion Passenger before 4.0.60 and 5.0.x before 5.0.22, when used in Apache integration mode or in standalone mode without a filtering proxy, allows remote attackers to spoof headers passed to applications by using an _ (underscore) character instead of a - (dash) character in an HTTP header, as demonstrated by an X_User header.

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