Phusion Passenger Server allows to overwrite headers in some cases
Published: November 23, 2015
SECURITY IDENTIFIERS
- CVE: CVE-2015-7519 (NVD)
- GHSA: GHSA-fxwv-953p-7qpf
- Vendor Advisory: https://blog.phusion.nl/2015/12/07/cve-2015-7519/
GEM
SEVERITY
CVSS v3.x: 3.7 (Low)
PATCHED VERSIONS
~> 4.0.60
>= 5.0.22
DESCRIPTION
It is possible in some cases, for clients to overwrite headers set by the server, resulting in a medium level security issue. Passenger 5 uses an SCGI-inspired format to pass headers to Ruby/Python applications, while Passenger 4 uses an SCGI-inspired format to pass headers to all applications. This implies a conversion to UPPER_CASE_WITH_UNDERSCORES whereby the difference between characters like '-' and '_' is lost.