漏洞信息
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Vulnerability Title
Traefik: SNICheck ignores wildcard TLSOptions mappings, allowing domain-fronted mTLS bypass
Vulnerability Description
Traefik is an HTTP reverse proxy and load balancer. From 3.7.0 until 3.7.3, there is a high severity vulnerability in Traefik's domain-fronting protection (SNICheck) that allows an unauthenticated client to bypass mutual TLS enforced through wildcard router TLSOptions. When a router uses a wildcard host rule such as Host(*.example.com) with stricter TLS options (for example RequireAndVerifyClientCert), SNICheck resolves the TLS options for the HTTP Host header using exact map lookups only and never applies wildcard matching. If another permissive SNI is served on the same entrypoint, an attacker can complete the TLS handshake under the permissive options and then send an HTTP Host header targeting the wildcard-protected backend, reaching it without presenting a client certificate. This affects the regular HTTPS / HTTP-2 path and does not require HTTP/3. This vulnerability is fixed in 3.7.3.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Vulnerability Type
使用候选路径或通道进行的认证绕过
Vulnerability Title
Traefik 授权问题漏洞
Vulnerability Description
Traefik是Traefik公司开源的一款反向代理与负载均衡工具。 Traefik 3.7.0版本至3.7.3之前版本存在授权问题漏洞,该漏洞源于域前置保护(SNICheck)中存在仅使用精确映射查找解析HTTP Host标头的TLS选项且不应用通配符匹配,可能导致未经验证的客户端绕过通过通配符路由器TLSOptions强制实施的相互TLS。
CVSS Information
N/A
Vulnerability Type
N/A