Is buffer overflow/overrun possible in completely managed asp.net c# web application

Question

Can there be buffer overflow/overrun vulnerabilities in completely managed asp.net web portal.If yes how can this be tested.

Answer 1

I had a tool (HP Dev Inspect) detect a possible "Possible Parameter Buffer Overflow" within my ASP.NET app and it was because we didn't have a MaxLength="20" in one of our TextBoxes...