thib8956/nginx-proxy
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Added comments about httpoxy

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This commit is contained in:
Steve Kamerman 2016-07-19 11:03:41 -04:00
parent 357d58ad97
commit fd127517b9
2 changed files with 6 additions and 0 deletions
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4
README.md
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@ -205,11 +205,15 @@ proxy_set_header Connection $proxy_connection;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
# Mitigate httpoxy attack (see README for details)
proxy_set_header Proxy "";
```
***NOTE***: If you provide this file it will replace the defaults; you may want to check the .tmpl file to make sure you have all of the needed options.
***NOTE***: The default configuration blocks the `Proxy` HTTP request header from being sent to downstream servers. This prevents attackers from using the so-called [httpoxy attack](http://httpoxy.org). There is no legitimate reason for a client to send this header, and there are many vulnerable languages / platforms (`CVE-2016-5385`, `CVE-2016-5386`, `CVE-2016-5387`, `CVE-2016-5388`, `CVE-2016-1000109`, `CVE-2016-1000110`, `CERT-VU#797896`).
#### Proxy-wide
To add settings on a proxy-wide basis, add your configuration file under `/etc/nginx/conf.d` using a name ending in `.conf`.

2
nginx.tmpl
View File

@ -51,6 +51,8 @@ proxy_set_header Connection $proxy_connection;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
# Mitigate httpoxy attack (see README for details)
proxy_set_header Proxy "";
{{ end }}