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  1.  Home
  2. RPG400-L
  3. October 2009

RE: SQL Problem

-----Message d'origine-----
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] De la part de Brian Piotrowski

An injection attack occurs when you embed additional SQL
commands into an external SQL statement. Taking Charles'
example, if you have:

wSQL = 'select * from XYZ where fld2 = ' + QUOTE +
inFld2Value + QUOTE;

An injection attack could occur by adding additional commands
within the inFld2Value parameter. So if inFld2Value had a
value of "a';DROP TABLE users; select * from users where
t='", it would have the potential to not find anything in the
first statement and then attempt to drop a table named users
and then attempt to query the users table.


But what happens here :
wSQL = 'select * from XYZ where fld2 = ?';
/exec SQL prepare C1 from :wSQL;
/exec SQL open C1 using :inFld2Value;

when inFld2Value had a value of "a';DROP TABLE users;select * from users where t='" ?

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