Owasp Top 10 A1: Injection

The document summarizes the top 10 security vulnerabilities in web applications according to the Open Web Application Security Project (OWASP). These include injection flaws, cross-site scripting, broken authentication and session management, insecure direct object references, cross-site request forgery, security misconfiguration, insecure cryptographic storage, failure to restrict URL access, insufficient transport layer protection, and unvalidated redirects and forwards. Countermeasures for each vulnerability are also provided.

Cross Site Scripting (XSS) is a type of injection attack where malicious scripts are injected into otherwise benign and trusted websites. XSS has been a top web application vulnerability since 1996. There are three main types of XSS attacks: reflected XSS, stored XSS, and DOM-based XSS. Reflected XSS occurs when malicious scripts come from URLs, while stored XSS happens when scripts are stored on websites. XSS can be used to steal cookies and sessions, redirect users, alter website contents, and damage an organization's reputation. Developers can prevent XSS through input validation, output encoding, and using the HttpOnly flag.

This presentation will provide you the deep knowledge of the Cross-Site Scripting and SQL Injection with the remediation and prevention measures.

Introduction Impact of XSS attacks Types of XSS attacks Detection of XSS attacks Prevention of XSS attacks At client side At Server-side Conclusion References

Presentation on broken access control. Covered almost complete topic. This presentation includes what is broken access control?, Example of broken access control and how to prevent it.

The document discusses SQL injection, including its types, methodology, attack queries, and prevention. SQL injection is a code injection technique where a hacker manipulates SQL commands to access a database and sensitive information. It can result in identity spoofing, modifying data, gaining administrative privileges, denial of service attacks, and more. The document outlines the steps of a SQL injection attack and types of queries used. Prevention methods include minimizing privileges, coding standards, and firewalls.

The document discusses SQL injection attacks and how they work. SQL injection occurs when user input is inserted directly into an SQL query string without proper validation or escaping. This allows attackers to alter the structure of the intended SQL query and potentially gain unauthorized access to sensitive data or make unauthorized changes to the database. The document provides examples of vulnerable queries and how attackers can exploit them to inject malicious SQL code. It also lists some common techniques used in SQL injection attacks and provides recommendations for preventing SQL injection vulnerabilities.

General Waf detection and bypassing techniques. Main focus to demonstrate that how to take right approach to analyse the behaviour of web application firewall and then create test cases to bypass the same.

This document discusses server-side request forgery (SSRF) exploitation. It provides examples of how SSRF can be used to access internal networks and bypass authentication by forging requests from the vulnerable server. Specific cases described include exploiting OAuth token hijacking, memcached exploitation using protocol smuggling, and exploiting vulnerabilities in libraries like TCPDF, LWP, and Postgres that enable SSRF. The document encourages finding creative ways to leverage SSRF and related vulnerabilities like open redirects, XML external entities, and SQL injection to compromise hosts and internal services.

Key Points What is Cross Site Request Forgery (CSRF)? How Attack Can Happen? Damages caused by CSRF? Mitigations What is Cross Site Request Forgery (CSRF)? CSRF is an attack in which attacker forges the request as a trusted user. The request is essentially made to send unintended data to the site. A vulnerable web application assumes that the data is coming from a trusted user. The root cause is – request coming from browser is trusted by server blindly, if CSRF protection is not implemented. This “blind trust” lets attacker create a forged request, and make the victim perform that request. How Attack Can Happen? Attacker knows about target application, on which the attack is to be performed Attacker forges request and sends it to victim who may be logged into the website by embedding that forged request into a hyperlink Victim clicks on it, and unknowingly sends malicious request to website Website accepts it and processes it. Thus the attacker is successful in performing the attack. Damages caused by CSRF? In Net-banking attacker can forge the request and send it to victim to steal money from Victim’s account Personal health information can be stolen or modified in a hospital database Attacker force victim to perform unwanted action which affect their profile Mitigation Techniques Can be mitigate by two ways CSRF token (a cookie which is introduced in each form and validated by web app) Captcha (implemented to ensure that the request is being performed by a human interaction)

This document discusses bug bounty programs (BBPs), which reward security researchers for responsibly disclosing software vulnerabilities. It introduces BBPs, noting they save companies money while improving security. Major companies like Google and Facebook run BBPs. The document outlines prerequisites for BBPs like learning security testing techniques. It provides tips for finding vulnerabilities like understanding a site's scope, tools, and avoiding duplicate reports. Common vulnerability types in BBPs include injection flaws and insecure data storage.

The document discusses CRLF injection and SSRF vulnerabilities. CRLF injection occurs when user input is directly parsed into response headers without sanitization, allowing special characters to be injected. SSRF is when a server is induced to make HTTP requests to domains of an attacker's choosing, potentially escalating access. Mitigations include sanitizing user input, implementing whitelists for allowed domains/protocols, and input validation.

While input validation vulnerabilities such as XSS and SQL injection have been intensively studied, a new class of injection vulnerabilities called HTTP Parameter Pollution (HPP) has not received as much attention. HPP attacks consist of injecting encoded query string delimiters into other existing parameters. If a web application does not properly sanitize the user input, a malicious user can compromise the logic of the application to perform either client-side or server-side attacks. One consequence of HPP attacks is that the attacker can potentially override existing hard-coded HTTP parameters to modify the behavior of an application, bypass input validation checkpoints, and access and possibly exploit variables that may be out of direct reach. In the talk we present the first automated system for the detection of HPP vulnerabilities in real web applications. Our approach consists of injecting fuzzed parameters into the web application and a set of tests and heuristics to determine if the pages that are generated contain HPP vulnerabilities. We used this system to conduct a large-scale experiment by testing more than 5,000 popular websites and discovering unknown HPP flaws in many important and well-known sites such as Microsoft, Google, VMWare, Facebook, Symantec, Paypal and others. These sites have been all informed and many of them have acknowledged or fixed the problems. We will explain in details how to efficiently detect HPP bugs and how to prevent this novel class of injection vulnerabilities in future web applications.

This document provides an introduction to bug bounty programs. It defines what a bug bounty program is, provides a brief history of major programs, and discusses reasons they are beneficial for both security researchers and companies. Key points covered include popular programs like Google and Facebook, tools used in bug hunting like Burp Suite, and lessons for researchers such as writing quality reports and following each program's rules.

SQL injection is a type of attack where malicious SQL code is injected into an application's database query, potentially exposing or modifying private data. Attackers can bypass logins, access secret data, modify website contents, or shut down databases. SQL injection occurs when user input is not sanitized before being used in SQL queries. Attackers first find vulnerable websites, then check for errors to determine the number of columns. They use "union select" statements to discover which columns are responsive to queries, allowing them to extract data like user credentials or database contents. Developers should sanitize all user inputs to prevent SQL injection attacks.

This document provides an introduction to SQL injection basics. It defines SQL injection as executing a SQL query or statement by injecting it into a user input field. The document outlines why SQL injection is studied, provides a sample database structure, and describes generic SQL queries and operators like UNION and ORDER BY. It also categorizes different types of SQL injection and attacks. The remainder of the document previews upcoming topics on blind SQL injection, data extraction techniques, and prevention.

Cross-site scripting (XSS) is the most common web application vulnerability. There are three main types of XSS attacks: reflected XSS, stored XSS, and DOM-based XSS. Reflected XSS occurs when malicious scripts are included in hyperlinks and infect the victim's browser when the link is clicked. Stored XSS involves injecting malicious scripts into the application itself, which are then executed when users access stored information. DOM-based XSS modifies the DOM environment used by client-side scripts, causing them to run unexpectedly and potentially harmfully. All XSS attacks allow attackers to hijack user sessions, insert hostile content, and fully compromise users. Applications can prevent XSS by validating all input

Topics include: - Sample and Demo of Top Application Risks
— Cross Site Scripting, SQL Injection, Access Control - Who’s Monitoring Your Traffic?
— Encrypting in Transit Secure Data Storage & Protection
— Correct Password -Storage & Data Protection -Growing Threats Plaguing Applications

The top 10 security issues in web applications are: 1. Injection flaws such as SQL, OS, and LDAP injection. 2. Cross-site scripting (XSS) vulnerabilities that allow attackers to execute scripts in a victim's browser. 3. Broken authentication and session management, such as not logging users out properly or exposing session IDs. 4. Insecure direct object references where users can directly access files without authorization checks. 5. Cross-site request forgery (CSRF) that tricks a user into performing actions they did not intend. 6. Security misconfiguration of web or application servers. 7. Insecure cryptographic storage of passwords or sensitive data. 8

This document summarizes common web application vulnerabilities like cross-site scripting (XSS), SQL injection, and file uploads. It provides examples of each vulnerability and recommendations for mitigation strategies. For XSS, it recommends sanitizing input and escaping output. For SQL injection, it suggests using parameterized queries, stored procedures, and escaping strings. For file uploads, it advises validating file types, randomizing filenames, and restricting directory permissions. The document aims to help secure PHP web applications from these common risks.

Today is the age of computer and internet. More and more people are creating their own websites to market their products and earn more profit from it. Having our own website will definitely help us in getting more customers purchasing our products but at the same time we can also attract hackers to play around with our website. If we have not taken enough care to protect our website from hackers then our business can even come to an end because of these hackers. If we own a website, then we might know the importance of ensuring that our website is safe from viruses and hackers. After going online most of the website designers think that their work is over. They have delivered what they were paid for and now they will be available for the maintenance of the site only. But sometimes the main problem starts after publishing the website. What if the website they have built suddenly start showing different stuff from what was already present there? What if weird things start appearing on the pages of our website? And most horribly what if the password of our login panel has changed and we are not able to login into our website. This is called hacking, a website hacking. We have to figure out how this happened so we can prevent it from happening again. In this seminar we are going to discuss some of major website hacking techniques and we are also going to discuss how to prevent website from getting vulnerable to different attacks currently use by various hackers.