Vulnerability Information
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Vulnerability Title
Traefik: tcp router clears read deadlines before tls forwarding, enabling stalled handshakes (slowloris doS)
Vulnerability Description
Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.38 and 3.6.9, there is a potential vulnerability in Traefik managing TLS handshake on TCP routers. When Traefik processes a TLS connection on a TCP router, the read deadline used to bound protocol sniffing is cleared before the TLS handshake is completed. When a TLS handshake read error occurs, the code attempts a second handshake with different connection parameters, silently ignoring the initial error. A remote unauthenticated client can exploit this by sending an incomplete TLS record and stopping further data transmission, causing the TLS handshake to stall indefinitely and holding connections open. By opening many such stalled connections in parallel, an attacker can exhaust file descriptors and goroutines, degrading availability of all services on the affected entrypoint. This issue has been patched in versions 2.11.38 and 3.6.9.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Vulnerability Title
Traefik 资源管理错误漏洞
Vulnerability Description
Traefik是Traefik开源的一款开源的反向代理与负载均衡工具。 Traefik 2.11.38之前版本和3.6.9之前版本存在资源管理错误漏洞，该漏洞源于TCP路由器处理TLS握手时存在缺陷，可能导致远程未经验证的客户端通过发送不完整的TLS记录来耗尽文件描述符和goroutine，从而降低服务可用性。
CVSS Information
N/A
Vulnerability Type
N/A