SP2 causes problems! in Security http://www.dslreports.com/forum/r13164313 en Fri, 04 Dec 2009 03:55:00 EDT Fri, 04 Dec 2009 03:55:00 EDT Re: SP2 causes problems! http://www.dslreports.com/forum/remark,13165980 Steve :
said by H3lpme:

Apparently, applications compressed with this application doesn't work flawlessly on SP2.. good to know, they work 100% on SP1 though..
This smells like the application is trying to execute a data page, which is impacted by SP2's Data Execution Protection.

I'd imagine that self-unpackers allocate a big chunk of memory with either HeapAlloc() or VirtualAlloc(), unpack the data into it, then jump into the entry point. But with DEP, stack and data pages aren't executable, so I think they'd need to use VirtualProtect() to explicitly mark the pages executable.

I think it's also possible to disable DEP on a per-application basis.

A detailed description of the Data Execution Prevention (DEP) feature in Windows XP Service Pack 2

Steve
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Stephen J. Friedl • Unix Wizard • Microsoft Security MVP • Tustin, California USA • my web site]]> http://www.dslreports.com/forum/remark,13165980 Thu, 14 Apr 2005 00:44:53 EDT Re: SP2 causes problems! http://www.dslreports.com/forum/remark,13165743 hpguru :
said by H3lpme:

I always compress my binaries with teLock...
Things that make you go Hmmmm...
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Get hpHOSTS! Member ASAP]]> http://www.dslreports.com/forum/remark,13165743 Thu, 14 Apr 2005 00:08:14 EDT Re: SP2 causes problems! http://www.dslreports.com/forum/remark,13164742 anon : I just solved it!

I always compress my binaries with teLock, and this is what caused my misery!

Apparently, applications compressed with this application doesn't work flawlessly on SP2.. good to know, they work 100% on SP1 though..

Thanks for the help!]]> http://www.dslreports.com/forum/remark,13164742 Wed, 13 Apr 2005 22:21:26 EDT Re: SP2 causes problems! http://www.dslreports.com/forum/remark,13164592 anon : Thanks a lot for that Steve! =)

However, I just now realized something;

The application does work, if executed or registered manually (there's also one dll)

When I execute them from my NSIS installer, nothing happens, nothing..

So I guess there's nothing wrong with the source.. perhaps it will work with inno setup :)

Really weird anyway, I've been banging my head for hours trying to figure this one out

Thanks!! ]]> http://www.dslreports.com/forum/remark,13164592 Wed, 13 Apr 2005 22:06:31 EDT Re: SP2 causes problems! http://www.dslreports.com/forum/remark,13164529 Steve :
said by h3lpme:

Perhaps you know of some place where I can read about what functions are blocked?
It's not so much about API functions are blocked, but some insecure behaviors are. RPC, self-modifying code, as well as some kinds of network activity. This is not an exhaustive list.

I'm a Win32 developer; if you care to send me the source, I'd be glad to take a look and offer some pointers as to what might be causing you grief. I have SP1 and SP2 systems right in front of me. steve@unixwiz.net

Steve
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Stephen J. Friedl • Unix Wizard • Microsoft Security MVP • Tustin, California USA • my web site]]> http://www.dslreports.com/forum/remark,13164529 Wed, 13 Apr 2005 21:59:58 EDT Re: SP2 causes problems! http://www.dslreports.com/forum/remark,13164502 anon : Thanks for the fest reply guys!

Well, there's mainly 2 application that doesn't work.. NOTHING happens when I execute then, nothing..

They are written in C++ (MS Visual Studio 6).

I'm not that good of a coder, and have no experience of debugging really.. but well, then I know that some application simply doesn't work, huh..

Perhaps you know of some place where I can read about what functions are blocked?

THANKS a lot!]]> http://www.dslreports.com/forum/remark,13164502 Wed, 13 Apr 2005 21:56:47 EDT Re: SP2 causes problems! http://www.dslreports.com/forum/remark,13164402 Steve : Generally speaking, SP2 only really breaks applications that were coded insecurely in the first place, so it's a fair bet that your app needs a bit of tuning up.

What's it written in? Do you have a debugging channel (via OutputDebugString) that you could use to look for API failures?

Steve
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Stephen J. Friedl • Unix Wizard • Microsoft Security MVP • Tustin, California USA • my web site]]> http://www.dslreports.com/forum/remark,13164402 Wed, 13 Apr 2005 21:44:07 EDT Re: SP2 causes problems! http://www.dslreports.com/forum/remark,13164335 parputt : Many older apps. do not work with SP2. If memory serves correct there is a warning given about this prior to install. Sorry, but you should have read the fine print.
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"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants." -- Thomas Jefferson]]> http://www.dslreports.com/forum/remark,13164335 Wed, 13 Apr 2005 21:36:57 EDT SP2 causes problems! http://www.dslreports.com/forum/remark,13164313 anon : Hi everybody!

I just recently installed SP2, and all of a sudden, several programs doesn't work.

I have this little application that I have coded that sits in the tray and provide favorite link, now this application just wont work:

When I try to install it, it doesn't create any registry entry in /run, and it doesn't even start a process..

When I execute it, nothing happens..

What could this be??

It works great on my SP1 machine, and on several other machines I have tried.

Please help...]]> http://www.dslreports.com/forum/remark,13164313 Wed, 13 Apr 2005 21:34:32 EDT