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third party  disabled support of SSLv3 due to the POODLE security

Posted on 2014-12-22
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Last Modified: 2014-12-28
Hello,

We have an application which calls third party Webservice to fetch documents and update status.

It was working all correct up to last month . The third party  disabled support of SSLv3 due to the POODLE security vulnerability and advised that carriers remove any HTTPs:// connections using SSLv3 and upgrade to at least TLS 1.0.

 Since then whenevr our applictaion tries to send request to the third party service we get below error

System.ServiceModel.CommunicationException: An error occurred while making the HTTP request to https://xxx This could be due to the fact that the server certificate is not configured properly with HTTP.SYS in the HTTPS case. This could also be caused by a mismatch of the security binding between the client and the server. ---> System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a send. ---> System.IO.IOException: Received an unexpected EOF or 0 bytes from the transport stream.

We are running Windows 2008 R2. I used Wireshark and I confirm that TLS 1.0 is used. What can cause this issue?

Thanks for help
Salim
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Question by:slimard01
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by:McKnife
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The 3rd party should be able to advise, shouldn't it? I would like to see what they say, first.
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by:slimard01
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This is what I think as well but it is ping pong game. So any advice on how to fix this, is welcome
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by:McKnife
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A ping pong game? So instead of telling you how to work with their new setup they invite you to play ping pong? They must have said at least somthing useful - what was it?
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by:Gary
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You need to specify the SSL type in your app to use only TLS else it will default to SSL

http://msdn.microsoft.com/en-us/library/system.net.servicepointmanager.securityprotocol.aspx
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slimard01 earned 0 total points
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The solution was to upgrade the .NET client to version 4.5.1. It was running .NET 4 extended.

It is now working fine
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by:slimard01
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The solution was to upgrade the .NET client to version 4.5.1. It was running .NET 4 extended.
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