Header normalization allows for client to clobber proxy set headers in Puma
概要
Header normalization allows for client to clobber proxy set headers in Puma
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
Puma is a Ruby/Rack web server built for parallelism. In affected versions clients could clobber values set by intermediate proxies (such as X-Forwarded-For) by providing a underscore version of the same header (X-Forwarded_For). Any users relying on proxy set variables is affected. v6.4.3/v5.6.9 now discards any headers using underscores if the non-underscore version also exists. Effectively, allowing the proxy defined headers to always win. Users are advised to upgrade. Nginx has a underscores_in_headers configuration variable to discard these headers at the proxy level as a mitigation. Any users that are implicitly trusting the proxy defined headers for security should immediately cease doing so until upgraded to the fixed versions.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2024-45614 puma 修正版: 4.3.8-1+deb11u3
参照URL
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- web lists.debian.org
- web nginx.org