Vulnerability Information
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Vulnerability Title
Header normalization allows for client to clobber proxy set headers in Puma
Vulnerability Description
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.
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Vulnerability Type
通过用户控制密钥绕过授权机制
Vulnerability Title
Puma 安全漏洞
Vulnerability Description
Puma是美国Evan Phoenix个人开发者的一款针对高并发应用的Web服务器。 Puma 6.4.3之前版本存在安全漏洞，该漏洞源于客户端可以通过提供带下划线的同名标头来覆盖中间代理设置的值。
CVSS Information
N/A
Vulnerability Type
N/A