RE: Research Project- Sources Outside the AS/400 & How these affe ct security

["Himes, Jay" <jehimes@xxxxxxxxxxx>]

Websites hosted on OS/400 are vulnerable to the same exploits used against
other web servers.
"SQL injection" is a good example; relying on user code constructing a
dynamic website not operating system flaws. 
The idea is to stick executable statements into variables which will be used
to construct webpages and thereby run them with the authority of the web
server.

For example:
I have a file called Names which has a key field ID and 2 other fields Fname
and Lname.
My website runs an update such as this:
Update names set Lname = '<variable>', Fname = '<variable>' where ID =
<variable>

Now lets say I put in for variable 3 "9; drop table names;" variable 1 is
"Bob" variable 2 is "Smith"     

The statement that gets executed is
Update names set Lname = 'Bob' , Fname = 'Smith' where ID = 9; drop table
names;

Some languages don't allow 2 statements at once (as in this example); but
they are still susceptible - imagine that variable 3 was "9 or ID <> 0".


Obviously checking variables must be done server side to prevent this;
client validation can be overridden by the client. 





-----Original Message-----
From: Rob Phillips [mailto:niceguy420l@xxxxxxxxx] 
Sent: Wednesday, January 28, 2004 9:30 AM
To: Midrange Systems Technical Discussion
Subject: Research Project- Sources Outside the AS/400 & How these affect
security


HI I am looking for any published material or off-the-top-of-your-head real
world knowledge.
In as much detail as possible, to explain to the ultimate network dummy,
myself.
 
Put another way, for testing purposed only, if you wanted to hack an AS/400.
What would you do?

Thanks a zillion, Rob


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