我正在尝试找到一种方法来允许单个进程作为提升用户启动,但是禁止此进程使用它的令牌启动任何子进程 - 在某种程度上,类似于“密封”令牌。这背后的原因是阻止用户启动cmd.exe并获得对系统的完全访问权。
我查看了进程权限常量,但我没有看到任何可用于实现此功能的内容。
答案 0 :(得分:3)
我认为您不能密封令牌,但您可以使用作业对象控制子流程创建:
static BOOL SpawnProcessAndTerminateGrandchildren(PTSTR Cmdline)
{
HANDLE hJob = CreateJobObject(0, 0);
if (!hJob) return false;
JOBOBJECT_BASIC_LIMIT_INFORMATION jobli;
jobli.LimitFlags = JOB_OBJECT_LIMIT_ACTIVE_PROCESS;
jobli.ActiveProcessLimit = 1;
BOOL retval = SetInformationJobObject(hJob, JobObjectBasicLimitInformation, &jobli, sizeof(jobli));
PROCESS_INFORMATION pi;
if (retval)
{
STARTUPINFO si;
ZeroMemory(&si, sizeof(si)), si.cb = sizeof(si);
retval = CreateProcess(0, Cmdline, 0, 0, false, CREATE_SUSPENDED|CREATE_BREAKAWAY_FROM_JOB|CREATE_NEW_CONSOLE, 0, 0, &si, &pi);
}
if (retval)
{
if (AssignProcessToJobObject(hJob, pi.hProcess)) // This can fail if we are already in a job
{
ResumeThread(pi.hThread);
WaitForSingleObject(pi.hProcess, INFINITE);
}
else
TerminateProcess(pi.hProcess, ERROR_OPERATION_ABORTED);
CloseHandle(pi.hThread);
CloseHandle(pi.hProcess);
}
CloseHandle(hJob);
return retval;
}
int main(int argc, ...)
{
TCHAR cmd[] = TEXT("cmd.exe /k regedit"); // cmd.exe is our child, regedit is the grandchild spawned by cmd.exe
SpawnProcessAndTerminateGrandchildren(cmd);
return 0;
}
如果您想要更多控件,可以使用JobObjectAssociateCompletionPortInformation,这样每次创建新的子进程时都会收到JOB_OBJECT_MSG_NEW_PROCESS消息。