is there security problem?

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my friends I used datalist in webform and I will get image from the database.For this I used httphandler.

<asp:Image ID="Image1" runat="server" ImageUrl='<%# "../xxxxxxx.ashx?ImID=" + Eval("id")%>' Height="244px" Width="244px" EnableViewState="True" />

I send image id Eval("id") to httphandler with querystring.

is this a querystring security problem?????

how I hide id or how can protect injection or any attacks.

Posted 13-Feb-14 20:33pm

Member-2338430

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Solution 2

go through the below references

http://stackoverflow.com/questions/9110561/encrypt-query-string-including-keys

http://www.codeproject.com/Tips/583097/Global-Query-String-Encryption

http://www.codeproject.com/Articles/20147/Encrypt-a-Querystring-with-Expiration

Posted 14-Feb-14 0:32am

Member 10476757

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Accepted Answer · 2014-02-13T21:32:00

Quote:

ASP.NET

<asp:Image ID="Image1" runat="server" ImageUrl='<%# "../xxxxxxx.ashx?ImID=" + EncodeID(Eval("id"))%>' Height="244px" Width="244px" EnableViewState="True" />

Actually the ImageUrl after rendered on Browser, would refer to a Image Path rather than any ID.

That is because according to the code, it will dynamically bind the Path with the help of ID at Server side. There will be no trace of ID or any parameters at the client side Browser.
You can check the HTML of Image on Browser by Inspecting the Element.

However, if you want to protect the data, you can add some Encoding function and modify code as...