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MQSeries.net Forum Index » IBM MQ Security » New MQ Security Hole Found - Part 2

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RikBaeten
PostPosted: Wed Mar 16, 2011 2:35 am    Post subject: Reply with quote

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Joined: 26 Feb 2007
Posts: 19

This is correctly working from a client-application v7 in C to a WMQ v5.3 server.

However connecting the same client-application v7 in C to a WMQ v7 server it no longer works. At the same time it continues to work from a Java WMQ v5.3 client app to the same WMQ v7 server.

Here is a related topic which could partially explain this behaviour:
http://stackoverflow.com/questions/5010826/websphere-mq-windows-to-windows-authentication-with-java-classes
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mqjeff
PostPosted: Wed Mar 16, 2011 3:11 am    Post subject: Reply with quote

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Joined: 25 Jun 2008
Posts: 17447

RikBaeten wrote:
This is correctly working from a client-application v7 in C to a WMQ v5.3 server.

However connecting the same client-application v7 in C to a WMQ v7 server it no longer works. At the same time it continues to work from a Java WMQ v5.3 client app to the same WMQ v7 server.

Here is a related topic which could partially explain this behaviour:
http://stackoverflow.com/questions/5010826/websphere-mq-windows-to-windows-authentication-with-java-classes


Please don't re-open six year old threads for unrelated issues.

Mods, please split this into a new thread.

RikBaeten - what is your question here?

I'm tempted to disagree with T-Rob on his response in that stackoverflow posting. I did not think that the Java client had any access to os-level user ids unless they were actually specified in the user-written code. It certainly doesn't have the same level of access to os level internals that .NET does, because of the "100% pure java" design of the Java language.

Now maybe the bit about NTSIDsRequired on the channel changes this picture for the Java client, but I'd have to revisit the documentation on that. And this is why I said I'm *tempted* to disagree with T-Rob. Since I know I *haven't* revisited that doc.
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exerk
PostPosted: Wed Mar 16, 2011 3:14 am    Post subject: Reply with quote

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Joined: 02 Nov 2006
Posts: 6339

mqjeff, split as requested...
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It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys.
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RogerLacroix
PostPosted: Thu Mar 17, 2011 4:33 pm    Post subject: Reply with quote

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Joined: 15 May 2001
Posts: 3253
Location: London, ON Canada

mqjeff wrote:
I'm tempted to disagree with T-Rob on his response in that stackoverflow posting. I did not think that the Java client had any access to os-level user ids unless they were actually specified in the user-written code. It certainly doesn't have the same level of access to os level internals that .NET does, because of the "100% pure java" design of the Java language.

I agree with Jeff. Java programs running on Windows use the character UserID. Whereas native Windows application do get access to UserID and the SID.

Regards,
Roger Lacroix
Capitalware Inc.
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