B4J Question [ABMaterial] Security in ABMaterial

MichalK73 · Aug 14, 2018

Hello.
Recently, the client has reported strange entries in the LOG of his server which I wrote for him in ABMaterial. Exactly on the site is the DEMO version secured with a password to enter

B4X:

page.InputBox ("demo", "The demo version is disabled", "Log", "Cancel", True, ABM.INPUTBOX_QUESTIONTYPE_PASSWORD, ABM.INPUT_PASSWORD, "", "", "", "Error", False, ABM .MSGBOX_POS_CENTER_CENTER, "")

I have added options that in the logs I have an entry for what people type. Strangely enough, there are some poor people who analyze the page code. They see some exotic ABMaterial framework and they wonder what it is. Password entries in logs are most often: abmclose, abmcancel, abmoverlay. Of course, there is no further transition without a proper password.
I am asking a question that I did not ask myself about the security level of ABMaterial. Has anybody met with any ABMaterial safety situations? I suspect that with time, everyone will collide with it and it would be good to be better prepared in time. All comments are welcome about security at ABMaterial.

Erel · Aug 15, 2018

I cannot say too much about ABMaterial as I'm not familiar with its internals, however it is recommended to configure the DOS filter.

B4X:

'example
srvr.AddDoSFilter("/*", CreateMap("maxRequestsPerSec": 20))

http://www.eclipse.org/jetty/documentation/9.4.x/dos-filter.html

alwaysbusy · Aug 16, 2018

@MichalK73 Are you talking about the log one the server or the log in the browsers console? If it is on the server then that should be ok. If someone from the outside can read these logs, then you have a serious security problem with your server. If you use B4JS in ABM, then you have to be extra careful not to use it with passwords because B4JS runs on the browser side and can easily be manipulated. Note that ABM is just a GUI layer. All 'intelligence' is server side and all general protection (like using encrypted passwords in your database) are up to you.

MichalK73 · Aug 16, 2018

alwaysbusy said:
Are you talking about the log one the server or the log in the browsers console?

No.
In the database I have a log table to which I write important information. abmclose, abmcancel, abmoverlay are passwords entered by anonymous users in the window "page.InputBox". There are many of them. The value entered is sent backend on the server side. Hence my question. Will ABMaterial be immune to such an attack? I suspect that they are looking for some methods of circumvention in ABMaterial.

alwaysbusy · Aug 16, 2018

Ah, now I think I get it Some passwords are literally 'abmclose', 'abmcancel' etc, no?

If so, no, it will not have any security risk and ABM should withstand it.

I think one thing you may check is if in 'demo' mode, some components are just hidden (using the .Visibility property). It is fairly simple to just 'unhide' such components. But this is not an ABM specific issue, this is possible with any html webapp.

So, only add important components AFTER the user has logged in.

I'm only mentioning this because I recently went to a webapp (not written in ABM) where this was the case and just by hiding the loginbox and showing the rest of the page, I 'hacked' their app

MichalK73 · Aug 16, 2018

B4X:

Private Sub WebSocket_Connected (WebSocket1 As WebSocket)

...
...
...
    If session.GetAttribute2("IsAuthorized", "") = "" Then
        If Main.config.Get("demo") = "1" Then
            page.InputBox("demo","The demo version is disabled","Loguj","Anuluj",True,ABM.INPUTBOX_QUESTIONTYPE_PASSWORD,ABM.INPUT_PASSWORD,"","","","Błąd",False,ABM.MSGBOX_POS_CENTER_CENTER,"")
        End If
        Return
    End If
    ABM.UpdateFromCache(Me, ABMShared.CachedPages, ABMPageId, ws)
    If page.ComesFromPageCache Then
...
...
...
End Sub

B4X:

Sub Page_InputboxResult(returnName As String, result As String)
    
    If returnName = "demo" Then
        If result = Main.config.get("demo_pass") Then
            ws.Session.SetAttribute("IsAuthorized", "true")
            ABMShared.writeLog("demo ok", result,ws.UpgradeRequest.RemoteAddress)
            ABMShared.NavigateToPage(ws, "", "../demo/index.html" )
        Else
            ABMShared.writeLog("demo fake", result,ws.UpgradeRequest.RemoteAddress)
            ABMShared.NavigateToPage(ws, "", "../welcome/index.html" )
        End If
    Else
        ABMShared.NavigateToPage(ws, "", "../welcome/index.html" )
    End If
    
    
End Sub

So the query for entry is at the "WebSocket_Connected" level. Only after fulfilling the password condition, the contents of the page in "ConnectPage ()" are loaded.
So is it ok?

alwaysbusy · Aug 16, 2018

Yes, this is how I do it too. I do assume you do this check in every page (so the user can not type demo/index.html or any other logged-in only page, hence skipping the whole login phase).

MichalK73 · Aug 16, 2018

Ok. Thanks.

B4J Question [ABMaterial] Security in ABMaterial

MichalK73

Well-Known Member

Erel

B4X founder

alwaysbusy

Expert

MichalK73

Well-Known Member

alwaysbusy

Expert

MichalK73

Well-Known Member

alwaysbusy

Expert

MichalK73

Well-Known Member

Similar Threads

B4J Question [ABMaterial] Security in ABMaterial

Well-Known Member

B4X founder

Expert

Well-Known Member

Expert

Well-Known Member

Expert

Well-Known Member

Similar Threads

Privacy & Transparency

Privacy & Transparency