| module: std |
| package: net/http/httputil |
| versions: |
| - fixed: go1.15.13 |
| - fixed: go1.16.5 |
| - fixed: go1.17.0 |
| description: | |
| ReverseProxy can be made to forward certain hop-by-hop headers, |
| including Connection. If the target of the ReverseProxy is |
| itself a reverse proxy, this lets an attacker drop arbitrary |
| headers, including those set by the ReverseProxy.Director. |
| cves: |
| - CVE-2021-33197 |
| credit: Mattias Grenfeldt (https://grenfeldt.dev) and Asta Olofsson |
| symbols: |
| - ReverseProxy.ServeHTTP |
| links: |
| pr: https://go.dev/cl/321929 |
| commit: https://go.googlesource.com/go/+/950fa11c4cb01a145bb07eeb167d90a1846061b3 |
| context: |
| - https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI |
| - https://go.dev/issue/46313 |
