c++ - DuplicateHandle: need to OpenProcess, but the access is denied -


I send a message in my application using the hooks of windows, which are notified about each event on the system about the Windows event is done.

To execute the martial of the message parameters, I use shared memories. I call the external process, but to share the handle with my application frequency, it will call with PROCESS_DUP_HANDLE privilege requirements.

Actually every application is capable of sending messages using this architecture, even if I need to enable SeDebugPrivilege. External process actually works except for the 'Explorer' process, in which the Siebiebog prizele Do not have a token ...

State Documents:

AdjustmentTokiwalge Function Can not Add New Privileges for Access TokenAccording to the current privileges of this token Can enable or disable. To determine the token's privileges, call the GetTokenInformation function. So, the question is ... How to add SeDebugPrivilege token to the 'explorer' process, or alternatively, how to allow explorer to call the process OpenProcess ( PROCESS_DUP_HANDLE, FALSE, pId) ?

I do not understand why you use Named shared memory If your shared memory is the name of objects, then this object can be opened without the use of duplicateHandle .

If you have to use duplicate handles and need to be able to use OpenProcess (PROCESS_DUP_HANDLE, FALSE, pId) inside any process I think you should not use the SeDebugPrivilege . Instead you should do this for all of Approval PROCESS_DUP_HANDLE for the process with pId . If you create a process you can specify a security descriptor. If the process has already been created, you can modify the code for the OpenProcess , GetSecurityInfo (see) and SetSecurityInfo to modify the security descriptor of the process Can be used.

To test this approach, you can only start the process explorer (see) with administrative rights, open the Security tab of the selected process (with pId ) Process) and its security descriptor. After that, to enable all the process OpenProcess (PROCESS_DUP_HANDLE, FALSE, pId) , SeDebugPrivilege .


-

Comments

Post a Comment

Popular posts from this blog

Eclipse CDT variable colors in editor -

I hope this is a good question to ask here. This programming is related, so I thought it would be better than the superuser, so I am using the CDT C ++ Eclipse plugin. I know how the editor changes colors for some things But is there a way to do that all the variables are different colors? For example in KDEValue, it sets the local variables and square variables in different colors and bold square squares. Can I copy it to CDT? Eclips provides some level of color customization for text editor syntax You can see it on the following: There are many elements, including the Window> Preferences> C / C ++> Editor> Syntax color code that can be changed, assembly, Comments, Preprocessor and Doxian Under the code, it is possible to change the color of some variable types, such as global variables, local variable announcements, local variable references, and parameter variables. But I do not think the code is capable of changing the color of each variable declared....
Read more

AJAX doesn't send POST query -

$ (दस्तावेज़) .ready (function () {function ajaxselectrss (rssurlvar) {var ajaxRequest; // वेरिएबल जो अजाक्स को संभव बनाता है! कोशिश करें कि {// ओपेरा 8.0+, फ़ायरफ़ॉक्स, सफारी अजाक्स अनुरोध} = नया एक्सएमएलएचटीपीआरइवेस्ट ();} कैच (ई) {// इंटरनेट एक्सप्लोरर ब्राउज़र्स {ajaxRequest = new ActiveXObject ("Msxml2.XMLHTTP");} पकड़ो (ई) {try {ajaxRequest = new ActiveXObject ("Microsoft.XMLHTTP");} कैच (ई) {// कुछ गलत चेतावनी ("आपका ब्राउज़र तोड़ दिया!"); वापसी झूठी;}}} // एक बनाएं फ़ंक्शन जो सर्वर से भेजे गए डेटा प्राप्त करेंगे ajaxRequest.onreadystatechange = function () {if (ajaxRequest.readyState == 4) {var ajaxDisplay = document.getElementById ('news'); ajaxDisplay.innerHTML = ajaxRequest.responseText;}} / / Var rssurlvar = $ (this) .attr ("title"); var queryString = "rurl =" + rssurlvar; var urltofile = "rssget.php"; ajaxRequest.open ("पोस्ट", urltofile, सच); ajaxRequ Est.setRequestHeader ("सामग्री-प्र...
Read more

wpf - Custom Message Box Advice -

Well, I'm using a custom window box that comes with some custom control boxes that accompany the text The producers who are displayed are called. I have a defined event, which has been subscribed through the original class, it gets burnt when clicking on the button. However, I can not see how to use it effectively, I would like to return one yes, whether yes or not, but obviously my code will continue to execute, so this Below is some example code to clarify the problem that the method has subscibed by clicking on the button. Message box window Public partial class custom message box: window {public representative message messagebox object sender, event events e); Public event messagebox handler messagebox document; Public Customs Box () {Initial group (); } Public Customsbox (String Message) {InitializeComponent (); This.txtdescription.Text = Message; } Public Customsbox (String Message, String Title, String First BTNtext) {Initialization (); This.lbltitle.Content =...
Read more