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CVE-2021-23017 PoC — F5 NGINX Controller 安全漏洞

Source
Associated Vulnerability
Title:F5 NGINX Controller 安全漏洞 (CVE-2021-23017)
Description:A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.
Description
nginx 1.15.10 patch against cve-2021-23017  (ingress version)
Readme
nginx 1.15.x base image using [debian-base](quay.io/kubernetes-ingress-controller/debian-base-amd64)

nginx [engine x] is an HTTP and reverse proxy server, a mail proxy server, and a generic TCP proxy server.

This custom nginx image contains:

- [ngx_devel_kit](https://github.com/simpl/ngx_devel_kit)
- [set-misc-nginx-module](https://github.com/openresty/set-misc-nginx-module)
- [headers-more-nginx-module](https://github.com/openresty/headers-more-nginx-module)
- [nginx-http-auth-digest](https://github.com/atomx/nginx-http-auth-digest)
- [ngx_http_substitutions_filter_module](https://github.com/yaoweibin/ngx_http_substitutions_filter_module)
- [nginx-opentracing](https://github.com/opentracing-contrib/nginx-opentracing)
- [opentracing-cpp](https://github.com/opentracing/opentracing-cpp)
- [zipkin-cpp-opentracing](https://github.com/rnburn/zipkin-cpp-opentracing)
- [dd-opentracing-cpp](https://github.com/DataDog/dd-opentracing-cpp)
- [ModSecurity-nginx](https://github.com/SpiderLabs/ModSecurity-nginx) (only supported in x86_64)
- [brotli](https://github.com/google/brotli)
- [geoip2](https://github.com/leev/ngx_http_geoip2_module)

**How to use this image:**
This image provides a default configuration file with no backend servers.

_Using docker_

```console
docker run -v /some/nginx.con:/etc/nginx/nginx.conf:ro quay.io/kubernetes-ingress-controller/nginx:0.84
```

_Creating a replication controller_

```console
kubectl create -f ./rc.yaml
```
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