PRIOn knowledge basePRION:CVE-2015-7519Design/Logic Flaw
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.
References
lists.opensuse.org/opensuse-security-announce/2015-12/msg00024.html
www.openwall.com/lists/oss-security/2015/12/07/1
www.openwall.com/lists/oss-security/2015/12/07/2
blog.phusion.nl/2015/12/07/cve-2015-7519/
bugzilla.suse.com/show_bug.cgi?id=956281
github.com/phusion/passenger/commit/ddb8ecc4ebf260e4967f57f271d4f5761abeac3e
lists.debian.org/debian-lts-announce/2018/06/msg00007.html
puppet.com/security/cve/passenger-dec-2015-security-fixes
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