This document discusses database security and SQL injection attacks. It begins with an overview of access control in SQL and views before discussing SQL injection attacks in more detail. The key points are that SQL injection attacks involve inserting malicious SQL statements into user input fields to exploit applications that directly insert user input into SQL queries. Examples are given of how attacks can read or delete entire databases. The best defenses include using prepared statements with bound parameters and validating/sanitizing all user input.
SQL Injection is a dangerous vulnerability. The transformation from a normal SQL to a malicious query. The successful SQL injection attack can lead to unauthorized access, change or delete data, and theft of information. Do not take SQL injection for granted.
SQL Injection is a dangerous vulnerability. The transformation from a normal SQL to a malicious query. The successful SQL injection attack can lead to unauthorized access, change or delete data, and theft of information. Do not take SQL injection for granted.
What is SQL Injection Attack | How to prevent SQL Injection Attacks? | Cybers...Edureka!
(** Cyber Security Course: https://www.edureka.co/cybersecurity-certification-training **)
This ‘SQL Injection Attack’ PPT by Edureka will help you learn one of the most dangerous web application vulnerability – SQL Injection.
Below is the list of topics covered in this session:
Web Application Security
What is SQL Injection Attack?
Types of SQL Injection attacks
Demo – SQL Injection Attack Types
Prevention of SQL Injection Attack
Cyber Security Playlist: https://bit.ly/2N2jlNN
Cyber Security Blog Series: https://bit.ly/2AuULkP
Instagram: https://www.instagram.com/edureka_lea...
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
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SQL Injection Attack Detection and Prevention Techniques to Secure Web-Siteijtsrd
Structured Query Language (SQL) Injection is a code injection technique that exploits security vulnerability occurring in database layer of web applications [8]. According to Open Web Application Security Projects (OWASP), SQL Injection is one of top 10 web based attacks [10]. This paper shows the basics of SQL Injection attack, types of SQL Injection Attack according to their classification. It also describes the survey of different SQL Injection attack detection and prevention. At the end of this paper, the comparison of different SQL Injection Attack detection and prevention is shown. Mr. Vishal Andodariya"SQL Injection Attack Detection and Prevention Techniques to Secure Web-Site" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: http://www.ijtsrd.com/papers/ijtsrd13034.pdf http://www.ijtsrd.com/computer-science/computer-security/13034/sql-injection-attack-detection-and-prevention-techniques-to-secure-web-site/mr-vishal-andodariya
Major relational database platforms available at the moment microsoftMy-Writing-Expert.org
http://my-writing-expert.com/ .That's a sample paper - essay / paper on the topic "Major relational database platforms available at the moment microsoft" created by our writers!
Disclaimer: The paper above have been completed for actual clients. We have acclaimed personal permission from the customers to post it.
SQL injection attack occurs through the insertion and execution of malicious SQL statements into the entry field of data-driven applications. It exploits security related vulnerabilities in the software of an application
Web Security - OWASP - SQL injection & Cross Site Scripting XSSIvan Ortega
What is it?
How to prevent?
How to test my application web?
what say OWASP about it
All about SQL injection and Cross Site Scripting XSS
Tools to test our application web
Rules to prevent attacks from Hackers on our web
XSS and Sql Injection are Top 2 injection attacks currently causing threat to web application.
Cross-site scripting (XSS) is a code injection attack that allows an malicious user to execute malicious JavaScript in another user's browser. A successful XSS attack compromises the security of both the web application and its users.
SQL injection is a technique where malicious user can inject SQL commands into an SQL statement, via web page input.Injected SQL commands can alter SQL statement and compromise the security of a web application.
An overview of techniques for defending against SQL Injection using Python tools. This slide deck was presented at the DC Python Meetup on October 4th, 2011 by Edgar Roman, Sr Director of Application Development at PBS
What is SQL Injection Attack | How to prevent SQL Injection Attacks? | Cybers...Edureka!
(** Cyber Security Course: https://www.edureka.co/cybersecurity-certification-training **)
This ‘SQL Injection Attack’ PPT by Edureka will help you learn one of the most dangerous web application vulnerability – SQL Injection.
Below is the list of topics covered in this session:
Web Application Security
What is SQL Injection Attack?
Types of SQL Injection attacks
Demo – SQL Injection Attack Types
Prevention of SQL Injection Attack
Cyber Security Playlist: https://bit.ly/2N2jlNN
Cyber Security Blog Series: https://bit.ly/2AuULkP
Instagram: https://www.instagram.com/edureka_lea...
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
SQL Injection Attack Detection and Prevention Techniques to Secure Web-Siteijtsrd
Structured Query Language (SQL) Injection is a code injection technique that exploits security vulnerability occurring in database layer of web applications [8]. According to Open Web Application Security Projects (OWASP), SQL Injection is one of top 10 web based attacks [10]. This paper shows the basics of SQL Injection attack, types of SQL Injection Attack according to their classification. It also describes the survey of different SQL Injection attack detection and prevention. At the end of this paper, the comparison of different SQL Injection Attack detection and prevention is shown. Mr. Vishal Andodariya"SQL Injection Attack Detection and Prevention Techniques to Secure Web-Site" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: http://www.ijtsrd.com/papers/ijtsrd13034.pdf http://www.ijtsrd.com/computer-science/computer-security/13034/sql-injection-attack-detection-and-prevention-techniques-to-secure-web-site/mr-vishal-andodariya
Major relational database platforms available at the moment microsoftMy-Writing-Expert.org
http://my-writing-expert.com/ .That's a sample paper - essay / paper on the topic "Major relational database platforms available at the moment microsoft" created by our writers!
Disclaimer: The paper above have been completed for actual clients. We have acclaimed personal permission from the customers to post it.
SQL injection attack occurs through the insertion and execution of malicious SQL statements into the entry field of data-driven applications. It exploits security related vulnerabilities in the software of an application
Web Security - OWASP - SQL injection & Cross Site Scripting XSSIvan Ortega
What is it?
How to prevent?
How to test my application web?
what say OWASP about it
All about SQL injection and Cross Site Scripting XSS
Tools to test our application web
Rules to prevent attacks from Hackers on our web
XSS and Sql Injection are Top 2 injection attacks currently causing threat to web application.
Cross-site scripting (XSS) is a code injection attack that allows an malicious user to execute malicious JavaScript in another user's browser. A successful XSS attack compromises the security of both the web application and its users.
SQL injection is a technique where malicious user can inject SQL commands into an SQL statement, via web page input.Injected SQL commands can alter SQL statement and compromise the security of a web application.
An overview of techniques for defending against SQL Injection using Python tools. This slide deck was presented at the DC Python Meetup on October 4th, 2011 by Edgar Roman, Sr Director of Application Development at PBS
What they are, steps you can take to prevent them, a brief overview.
3/13/2013 winter term 2013 at Portland State University for the Introduction to Databases class.
Presented by Stacy Watts and Tyler Fetters
In today's modern world, security is a necessary fact of life. GreenSQL Security helps small to large organizations protect their sensitive information against internal and external threats. The rule-based engine offers database firewall, intrusion detection and prevention (IDS/IPS). GreenSQL Security Engine applies exception detection to prevent hacker attacks, end-user intrusion and unauthorized access by privileged insiders. The system provides a web based intuitive and flexible policy framework that enables users to create and edit their security rules quickly and easily. GreenSQL interfaces between your database and any source requiring a connection to it. This approach shields your database application and database operating system from direct, remote access. GreenSQL Database Security 1) Stops SQL Injection attacks on your web application 2) Blocks unauthorized database access and alerts you in real time about unwanted access 3) Separates your application database access privileges from administrator access 4) Gives you a complete event log for investigating database traffic and access 5) Ensures you achieve successful implementation with 24/7 support
I was using this presentation when delivering our meetup about SQL Injections.
You can find the video of that event at https://youtu.be/akpe3vKFeoc
More information about our professional services (including training and consulting) can be found at https://lifemichael.com
In this digital era, organizations and industries are moving towards replacing websites with web applications for many obvious reasons. With this transition towards web-based applications, organizations and industries find themselves surrounded by several threats and vulnerabilities. One of the largest concerns is keeping their infrastructure safe from attacks and misuse. Web security entails applying a set of procedures and practices, by applying several security principles at various layers to protect web servers, web users, and their surrounding environment. In this paper, we will discuss several attacks that may affect web-based applications namely: SQL injection attacks, cookie poisoning, cross-site scripting, and buffer overflow. Additionally, we will discuss detection and prevention methods from such attacks.
SQL injection is a type of security exploit in which the attacker adds SQL statements through a web application's input fields or hidden parameters to gain access to resources or make changes to data.
SOAP IS:
Lightweight communication protocol
For communication between applicationsone-way, request/response, multicast, etc..
Designed to communicate via HTTP
Not tied to any component technology
Not tied to any programming language
Based on XML
Simple and extensible
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
1. +
Housekeeping
Project/assignment 6/quiz 6 questions?
Quiz 6: Query optimization, database
security
At 9:10, you’ll have 15 minutes to do on-
line student ratings
Office hours today: 10:30-12:30
Offce hours next week:
M/W/F 10:30-12:30
2. +
Security:
Access Control, SQL Injection Attacks
Based upon slides from: classes.soe.ucsc.edu/.../SQL%20Injection%20Attacks.ppt
homes.cs.washington.edu/~suciu/current-trends.ppt
www.cse.iitb.ac.in/dbms/Data/.../DBSecurity-Overview.ppt
3. +
Data Security
Protection from malicious attempts to
steal (view) or modify data.
The science and study of methods of
protecting data (...) from unauthorized
disclosure and modification
Data Security = Confidentiality +
Integrity
4. + 4
Traditional Data Security
Security in statistical databases = Theory
http://en.wikipedia.org/wiki/Statistical_database
In a statistical database, it is often desired to allow
query access only to aggregate data, not individual
records. Securing such a database is a difficult
problem, since intelligent users can use a
combination of aggregate queries to derive
information about a single individual.
Security in SQL = Access control + Views
5. + 5
Access Control in SQL
GRANT privileges ON object TO users
[WITH GRANT OPTIONS]
GRANT privileges ON object TO users
[WITH GRANT OPTIONS]
privileges = SELECT | INSERT | DELETE | . . .
object = table | attribute
REVOKE privileges ON object FROM users
[CASCADE ]
REVOKE privileges ON object FROM users
[CASCADE ]
[Griffith&Wade'76, Fagin'78]
6. +
Access Control in MySQL
http://dev.mysql.com/doc/refman/5.0/en/privilege-system.html
The primary function of the MySQL privilege system is to
authenticate a user who connects from a given host and to associate
that user with privileges on a database such as SELECT, INSERT,
UPDATE, and DELETE
There are some things that you cannot do with the MySQL privilege
system:
You cannot explicitly specify that a given user should be denied access.
That is, you cannot explicitly match a user and then refuse the connection.
You cannot specify that a user has privileges to create or drop tables in a
database but not to create or drop the database itself.
A password applies globally to an account.You cannot associate a
password with a specific object such as a database, table, or routine.
7. + 7
Views in SQL
A SQL View = (almost) any SQL query
Typically used as:
GRANT SELECT ON pmpStudents TO DavidRispoliGRANT SELECT ON pmpStudents TO DavidRispoli
CREATE VIEW pmpStudents AS
SELECT * FROM Students WHERE…
CREATE VIEW pmpStudents AS
SELECT * FROM Students WHERE…
8. +
Views in MySQL
http://dev.mysql.com/doc/refman/5.0/en/create-view.html
CREATE [OR REPLACE]
[ALGORITHM = {UNDEFINED | MERGE | TEMPTABLE}]
[DEFINER = { user | CURRENT_USER }]
[SQL SECURITY { DEFINER | INVOKER }]
VIEW view_name [(column_list)]
AS select_statement
[WITH [CASCADED | LOCAL] CHECK OPTION]
The DEFINER and SQL SECURITY clauses determine which
MySQL account to use when checking access privileges for
the view when a statement is executed that references the
view.
9. + 9
Summary of SQL Security
Limitations:
Often no row level access control
Note: DB specific – fine-grained access control is
an active area of improvement
Table creator owns the data (not always fair)
… or spectacular failure:
Only ~30% assign privileges to users/roles
And then to protect entire tables, not columns
Access control = great success story of the DB
community...
10. +
MySQL security
http://dev.mysql.com/doc/refman/5.0/en/security.html
Many aspects:
General factors that affect security.These include
choosing good passwords, not granting unnecessary
privileges to users, ensuring application security by
preventing SQL injections and data corruption, and others.
See Section 6.1,“General Security Issues”.
Security of the installation itself.The data files, log files,
and the all the application files of your installation should
be protected to ensure that they are not readable or
writable by unauthorized parties. For more information,
see Section 2.18,“Postinstallation Setup and Testing”.
11. +
MySQL security
Access control and security within the database system itself,
including the users and databases granted with access to the
databases, views and stored programs in use within the database.
For more information, see Section 6.2,“The MySQL Access Privilege
System”, and Section 6.3,“MySQL User Account Management”.
Network security of MySQL and your system.The security is
related to the grants for individual users, but you may also wish to
restrict MySQL so that it is available only locally on the MySQL
server host, or to a limited set of other hosts.
Ensure that you have adequate and appropriate backups of your
database files, configuration and log files. Also be sure that you have
a recovery solution in place and test that you are able to successfully
recover the information from your backups. See Chapter 7, Backup
and Recovery.
14. +
What is a SQL Injection Attack?
Many web applications take user input from
a form
Often this user input is used literally in the
construction of a SQL query submitted to a
database. For example:
SELECT productdata FROM table WHERE
productname = ‘user input product name’;
A SQL injection attack involves placing SQL
statements in the user input
15. +
SQL Injection Attacks on the rise
https://www.net-security.org/secworld.php?id=13313
“Many, many sites have lost customer data in this way,” said
Chris Hinkley, Senior Security Engineer at FireHost.“SQL
Injection attacks are often automated and many website
owners may be blissfully unaware that their data could
actively be at risk.These attacks can be detected and
businesses should be taking basic and blanket steps to block
attempted SQL Injection, as well as the other types of attacks
we frequently see.”
16. +
2012 News of SQL attacks
http://www.mysqlperformanceblog.com/2012/07/18/sql-injection-
still-a-problem/
An SQL injection vulnerability resulted in an urgent June bugfix
release of Ruby on Rails 3.x.
Yahoo! Voices was hacked in July. The attack acquired 453,000 user
email addresses and passwords. The perpetrators claimed to have
used union-based SQL injection to break in.
LinkedIn.com leaked 6.5 million user credentials in June. A class
action lawsuit alleges that the attack was accomplished with SQL
injection.
SQL injection was documented as a security threat in 1998, but new
incidents still occur every month. Making honest mistakes,
developers fail to defend against this means of attack, and the
security of online data is at risk for all of us because of it.
17. +
Some good sites to learn more
Prevention guide (with sample code in many languages):
http://bobby-tables.com/
Tutorials:
(webinar) http://www.percona.com/webinars/2012-07-25-sql-injection-myths-and-
fallacies
http://www.netrostar.com/SQL-Injection-Attack
http://www.unixwiz.net/techtips/sql-injection.html
Cool site that let’s you try out attacks on a sample DB and explains
why they work
http://sqlzoo.net/hack/
Research paper on how to retrofit existing websites to combat SQL
injection attacks
http://lersse-dl.ece.ubc.ca/record/205/files/paper.pdf
18. +
An Example SQL Injection Attack
Product Search:
This input is put directly into the SQL statement within the
Web application:
$query = “SELECT prodinfo FROM prodtable WHERE prodname =
‘” . $_POST[‘prod_search’] . “’”;
Creates the following SQL:
SELECT prodinfo FROM prodtable WHERE prodname = ‘blah‘ OR ‘x’ = ‘x’
Attacker has now successfully caused the entire database to be
returned.
blah‘ OR ‘x’ = ‘x
19. +
A More Malicious Example
What if the attacker had instead entered:
blah‘; DROP TABLE prodinfo; --
Results in the following SQL:
SELECT prodinfo FROM prodtable WHERE prodname = ‘blah’; DROP TABLE
prodinfo; --’
Note how comment (--) consumes the final quote
Causes the entire database to be deleted
Depends on knowledge of table name
This is sometimes exposed to the user in debug code called during a
database error
Use non-obvious table names, and never expose them to user
Usually data destruction is not your worst fear, as there is low
economic motivation
20. +
Other injection possibilities
Using SQL injections, attackers can:
Add new data to the database
Could be embarrassing to find yourself selling
politically incorrect items on an eCommerce site
Perform an INSERT in the injected SQL
Modify data currently in the database
Could be very costly to have an expensive item
suddenly be deeply ‘discounted’
Perform an UPDATE in the injected SQL
Often can gain access to other user’s system
capabilities by obtaining their password
21. +
Best defence
If possible, use bound variables with
prepared statements
Many libraries allow you to bind inputs to
variables inside a SQL statement
PERL example (from
http://www.unixwiz.net/techtips/sql-
injection.html)
$sth = $dbh->prepare("SELECT email, userid FROM
members WHERE email = ?;");
$sth->execute($email);
See http://bobby-tables.com for example code in many
languages
22. +
How does this prevent an attack?
The SQL statement you pass to prepare is parsed and
compiled by the database server.
By specifying parameters (either a ? or a named
parameter like :name) you tell the database engine what
to filter on.
Then when you call execute the prepared statement is
combined with the parameter values you specify.
It works because the parameter values are combined with
the compiled statement, not a SQL string.
SQL injection works by tricking the script into including malicious
strings when it creates SQL to send to the database. So by sending
the actual SQL separately from the parameters you limit the risk of
ending up with something you didn't intend.
23. +
Other Defenses
Use provided functions for escaping strings
Many attacks can be thwarted by simply using the SQL
string escaping mechanism
‘ ’ and “ ”
mysql_real_escape_string() is the preferred function for
this
Will not guard against all attacks
Consider:
SELECT fields FROM table WHERE id = 23 OR 1=1
No quotes here!
24. +
More Defenses
Check syntax of input for validity
Many classes of input have fixed languages
Email addresses, dates, part numbers, etc.
Verify that the input is a valid string in the language
Some languages allow problematic characters (e.g., ‘*’
in email); may decide to not allow these
Exclude quotes and semicolons
Not always possible: consider the name Bill O’Reilly
Want to allow the use of single quotes in names
Have length limits on input
Many SQL injection attacks depend on entering long
strings
25. +
Even More Defenses
Scan query string for undesirable word
combinations that indicate SQL statements
INSERT, DROP, etc.
If you see these, can check against SQL syntax to see if
they represent a statement or valid user input
Limit database permissions and segregate users
If you’re only reading the database, connect to database
as a user that only has read permissions
Never connect as a database administrator in your web
application
26. +
AndYet More Defenses
Configure database error reporting
Default error reporting often gives away information
that is valuable for attackers (table name, field name,
etc.)
Configure so that this information is never exposed to
a user
Editor's Notes
Views hide sensitive data by omitting rows, columns, breaking associations, or computing aggregates
One of the most significant changes in attack traffic seen between Q1 and Q2 2012 was a 69% increase in SQL Injection attacks. Rising from 277,770 blocked attacks in the first quarter, to 469,983 between April and June, this type of attack is frequently cited as an attack vector of choice for data thieves.