SQL Injection Attacks and Defense - 2009

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References • Chapter 10 453 Table 10.31 Extracting Ingres Database Configuration Data Current database List tables List columns Query SELECT dbmsinfo('database'); SELECT relid, relowner, relloc FROM iirelation WHERE relowner != '$ingres'; SELECT column_name, column_datatype, table_name, table_owner FROM iicolumns; Blind SQL Injection Functions: Ingres Table 10.32 lists functions that are useful when performing blind SQL injection attacks. Table 10.32 Blind SQL Injection Functions Data String length Query LENGTH() Extract substring from a given string SELECT substr(string, offset, length); -- String (‘ABC’) representation with no single quotes SELECT chr(65)||chr(66)||chr(67) Microsoft Access Microsoft Access databases do not scale well with enterprise applications, and therefore are usually encountered only when the application has minimal database requirements. Brett Moore of insomniasec.com has published an excellent paper on SQL injection with Microsoft Access which you can find here: ■■ www.insomniasec.com/publications/Access-Through-Access.pdf Resources This section provides a list of links to further reading materials and tools to assist you in discovering, exploiting, and preventing SQL injection vulnerabilities. SQL Injection White Papers ■■ “Advanced SQL Injection” by Victor Chapela: www.owasp.org/index.php/Image:Advanced_SQL_Injection.ppt
454 Chapter 10 • References ■■ ■■ ■■ ■■ “Advanced SQL Injection in SQL Server Applications” by Chris Anley: www.ngssoftware.com/papers/advanced_sql_injection.pdf “Buffer Truncation Abuse in .NET and Microsoft SQL Server” by Gary O’Leary-Steele: http://scanner.sec-1.com/resources/bta.pdf “Access through Access” by Brett Moore: www.insomniasec.com/publications/Access-Through-Access.pdf “Time-Based Blind SQL Injection with Heavy Queries” by Chema Alonso: http://technet.microsoft.com/en-us/library/cc512676.aspx SQL Injection Cheat Sheets ■■ ■■ ■■ ■■ PentestMonkey.com SQL injection cheat sheets for Oracle, Microsoft SQL Server, MySQL, PostgreSQL, Ingres, DB2, and Informix: http://pentestmonkey.net/cheat-sheets/ Michaeldaw.org SQL injection cheat sheets for Sybase, MySQL, Oracle, PostgreSQL, DB2, and Ingres: http://michaeldaw.org/sql-injection-cheat-sheet/ Ferruh Mavituna cheat sheets for MySQL, SQL Server, PostgreSQL, and Oracle: http://ferruh.mavituna.com/sql-injection-cheatsheet-oku/ Ferruh Mavituna cheat sheets for Oracle: http://ferruh.mavituna.com/oracle-sql-injection-cheat-sheet-oku/ SQL Injection Exploit Tools ■■ ■■ ■■ Absinthe is a Windows GUI-based exploit tool that supports Microsoft SQL Server, Oracle, PostgreSQL, and Sybase using both blind and error-based SQL injection: www.0x90.org/releases/absinthe/ SQLBrute is a time- and error-based blind SQL injection tool that supports Microsoft SQL Server and Oracle: www.gdssecurity.com/l/t/sqlbrute.py Bobcat is a Windows GUI-based tool that supports Microsoft SQL Server exploitation: http://web.mac.com/nmonkee/pub/bobcat_files/BobCat_Alpha_v0.4.zip
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Justin Clarke Lead Author and Techn
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Lead Author and Technical Editor Ju
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exploiting, and correcting software
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Dafydd Stuttard is the author of th
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Contents Chapter 1 What Is SQL Inje
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Contents xi LAPSE. ................
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Contents xiii Generic MySQL Binary
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Contents xv Chapter 8 Code-Level De
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Contents xvii Increase the Verbosit
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Contents xix Ingres Cheat Sheet....
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Chapter 1 What Is SQL Injection? So
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What Is SQL Injection? • Chapter
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execute the query against the datab
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Incorrectly Handled Query Assembly
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} } reader = cmd.ExecuteReader(); r
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Chapter 2 Testing for SQL Injection
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Testing for SQL Injection • Chapt
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SELECT * FROM products WHERE idprod
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Figure 2.15 Exploitation Terminatin
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Time Delays Testing for SQL Injecti
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Summary Testing for SQL Injection
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Chapter 3 Reviewing Code for SQL In
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Reviewing Code for SQL Injection
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mssql_bind() − adds a parameter t
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OdbcCommand() − used to construct
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Reviewing PL/SQL and T-SQL Code Rev
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■■ ■■ ■■ ■■ URL: ht
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■■ ■■ Platform: Windows Pri
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Summary Reviewing Code for SQL Inje
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Frequently Asked Questions Reviewin
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Chapter 4 Exploiting SQL Injection
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Exploiting SQL Injection • Chapte
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Approach 3: Content-based Exploitin
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Error Messages in Oracle Exploiting
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MySQL Exploiting SQL Injection •
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Such a query will return output sim
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SELECT name,spare4 FROM sys.user$ w
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[+] Bruteforcing the sa password. T
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select user_name,web_password_raw f
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HTTP/DNS Exploiting SQL Injection
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Summary Exploiting SQL Injection
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Escalating Privileges Exploiting SQ
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Chapter 5 Blind SQL Injection Explo
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Blind SQL Injection Exploitation
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Common Blind SQL Injection Scenario
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1. Is the byte greater than 127? No
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Using Time-Based Techniques Blind S
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SELECT * FROM unknowntable UNION SE
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Figure 5.13 Extracting Database Log
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Summary Blind SQL Injection Exploit
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Chapter 6 Exploiting the Operating
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Exploiting the Operating System •
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[operating systems] multi(0)disk(0)
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Figure 6.13 Enabling CLR Integratio
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Oracle Exploiting the Operating Sys
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) c / ) ) ), bfilename('GETPWDIR',
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As expected, this creates sp.txt fi
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2 443 [+] Calling msfpayload3 to c
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DBMS_ADVISOR is probably the shorte
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EXECUTE IMMEDIATE q'!drop directory
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Microsoft SQL Server Exploiting the
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Figure 6.22 Creating an UNSAFE Bina
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Executing Operating System Commands
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Endnotes Exploiting the Operating S
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Chapter 7 Advanced Topics Solutions
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Using Case Variation Advanced Topic
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4. The application URL decodes the
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Advanced Topics • Chapter 7 323 D
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Advanced Topics • Chapter 7 325 I
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Advanced Topics • Chapter 7 327 w
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Advanced Topics • Chapter 7 329 N
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Advanced Topics • Chapter 7 331 m
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Advanced Topics • Chapter 7 333 1
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Using Hybrid Attacks Advanced Topic
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Exploiting Authenticated Vulnerabil
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Advanced Topics • Chapter 7 339
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Chapter 8 Code-Level Defenses Solut
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Code-Level Defenses • Chapter 8 3
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END; Execute immediate 'SELECT coun
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Validating Input in Java Code-Level
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UTL_SMTP.HELO(v_connection,'mailhos
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Summary Code-Level Defenses • Cha
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Chapter 9 Platform-Level Defenses S
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Platform-Level Defenses • Chapter
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Figure 9.3 Whitelist Rule to Patch
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Application Filters Platform-Level
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Use Strong Cryptography to Protect
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Page 424 and 425: Platform-Level Defenses • Chapter
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SQL Injection Attacks and Defense - 2009

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