漏洞信息
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Vulnerability Title
Caddy: FastCGI header normalization bypass in `forward_auth copy_headers`
Vulnerability Description
Caddy is an extensible server platform that uses TLS by default. Prior to 2.11.4, forward_auth copy_headers deletes the exact client-supplied identity header before copying the trusted value from the auth gateway. But when the request later goes through php_fastcgi, Caddy normalizes HTTP headers into CGI variables by replacing - with _. This lets a client send an underscore alias that survives the forward_auth delete step but becomes the same PHP/FastCGI variable. Result: a remote client can inject or sometimes override identity/group headers trusted by PHP/FastCGI applications behind Caddy. This vulnerability is fixed in 2.11.4.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Vulnerability Type
认证机制不恰当
Vulnerability Title
caddyserver caddy 授权问题漏洞
Vulnerability Description
caddyserver caddy是caddyserver团队开源的一款Web服务器软件。 caddyserver caddy 2.11.4之前版本存在安全漏洞,该漏洞源于forward_auth copy_headers在复制认证网关的可信值前删除客户端提供的身份标头,但请求经过php_fastcgi时Caddy会将HTTP标头转换为CGI变量,把-替换为_,从而允许客户端发送下划线别名绕过删除步骤,使得远程客户端能注入或覆盖PHP/FastCGI应用程序信任的身份或组标头。
CVSS Information
N/A
Vulnerability Type
N/A