RE: iSeries buffer overflow immunity?

["Goodbar, Loyd (ETS - Water Valley)" <LGoodbar@xxxxxxxxxxxxxx>]

You're right, it would be nearly impossible to derive program code and
variables from a data stream. OTOH, we're talking about ways to circumvent
security and make programs behave in an unauthorized manner. Depending on
your security mechanism, someone could tell your socket program to do things
the user shouldn't be "allowed" to do.

Loyd Goodbar
Senior programmer/analyst
BorgWarner
E/TS Water Valley
662-473-5713

-----Original Message-----
From: Chris Bipes [mailto:chris.bipes@xxxxxxxxxxxxxxx] 
Sent: Monday, November 08, 2004 15:29
To: 'Midrange Systems Technical Discussion'
Subject: RE: iSeries buffer overflow immunity?

Agreed,  one can clone your customer socket server by looking at the
traffic.  But can they reverse engineer you actual program?  See your
variable layout to find that flag that would allow them to change their
authority and run system commands?  I could be totally blind about this but
unless you have the program object, how can you reverse engineer the actual
code to get the pointers to data and procedures.

Chris Bipes

-----Original Message-----

Don't necessarily assume since your custom socket server isn't "standard"
that it can't be hacked. My understanding is the Samba group reverse
engineered Microsoft's SMB protocol when developing Samba. Then again, they
had hundreds (thousands?) of samples of SMB traffic to work with...
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