Hi Dave,
1st: Never, never, never store passwords in plain text!! Just don't do
it. Store a hash of the password (ie md5 or something else).
2nd: Never pass any input from the Internet directly into a query
without first checking it for sql injection.
Take a look at Wikipedia article for a brief explanation and several
links to further info.
http://en.wikipedia.org/wiki/SQL_injection
/Johan
Critters wrote:
Hi
A user was able to log into my site using:
1' and '1' or '1
in the username and password box.
I ran the query
SELECT * FROM members WHERE name = '1' and '1' or '1' AND password = '1' and
'1' or '1'
And it returned all rows. Can someone explain to me why this happens, and if the steps I
took (replacing the ' with a blank space when the user submits the login form) is enough
to prevent a similar "hack"
Appreciate any feedback.
--
Dave
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