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.
CVSS Details
- CVSS 3.1 Base Score: 3.7
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade passenger | Mar 31, 2017 | Jan 8, 2016 |
| Freebsd | — | Upgrade rubygem-passenger | Dec 10, 2025 | Dec 7, 2015 |
| Suse | — | Upgrade rubygem-passenger-apache2Upgrade ruby2.1-rubygem-passengerUpgrade rubygem-passenger | Feb 4, 2022 | Dec 21, 2015 |
| Ubuntu | — | Upgrade passenger | Nov 19, 2024 | Jan 8, 2016 |
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