JavaScript Security

* Django is a Web Application Framework, written in Python * Allows rapid, secure and agile web development. * Write better web applications in less time & effort.

A lecture/talk describing how to build and use polyglot payloads for finding vulnerabilities in web applications that traditional payloads can't. Here's the last slide: http://www.slideshare.net/MathiasKarlsson2/final-slide-36636479

The document outlines a methodology for effectively finding security vulnerabilities in web applications through bug hunting. It covers discovery techniques like using search engines and subdomain enumeration tools. It then discusses mapping the application by directory brute forcing and vulnerability discovery. Specific vulnerability classes covered include XSS, SQLi, file uploads, LFI/RFI, and CSRF. The document provides resources for each vulnerability type and recommends tools that can help automate the testing process.

Keeping your web application secure is an ongoing process - new classes of vulnerabilities are discovered with surprising frequency, and if you don't keep on top of them you could be in for a nasty surprise. This talk will discuss both common and obscure vulnerabilities, with real-world examples of attacks that have worked against high profile sites in the past.

This document discusses cross-site scripting (XSS) attacks and techniques for bypassing web application firewalls (WAFs) that aim to prevent XSS. It explains how XSS payloads can be embedded in XML, GIF images, and clipboard data to exploit browser parsing behaviors. The document also provides examples of encoding payloads in complex ways like JS-F**K to evade WAF signature rules.

How a new HTTP response header can help increase the depth of your web application defenses. Also includes a few slides on HTTP Strict Transport Security, a header which helps protects HTTPS sites from sslstrip attacks.

XSS (cross-site scripting) is a client-side vulnerability that allows injection of malicious JavaScript which can then be run on a victim's browser. The document discusses different types of XSS (non-persistent, persistent, DOM-based), examples of how to perform basic and advanced XSS attacks, ways XSS has been used on major websites, and how attackers can exploit XSS vulnerabilities for activities like session hijacking, cookie stealing, clickjacking, and more.

Lightning talk by avlidienburnn on how to break AngularJS sandbox and more or less XSS every AngularJS app out there (slight e

This document summarizes three security vulnerabilities that can exist in Flash applications: 1. Same-origin policy bypass through loader contexts and cross-domain policies 2. Phishing through manipulation of SWF URLs in metadata 3. Cross-site scripting through user-supplied parameters if the SWF is loaded from a public CDN domain that is shared by other sites.

My presentation from Framsia. Topics: XSS (reflected, stored, dom-based) CSRF Clickjacking Header based approaches (CSP, X-frame-options) EcmaScript5 HTML5 Some slides borrowed from John Wilander http://www.slideshare.net/johnwilander/application-security-for-rias

This slide deck consists of three presentations showing both an overall and detailed view of the new patent pending methods to make Cross-Site Scripting (XSS) detection more accurate and faster as well as the creation of dynamic exploits. It was presented at OWASP AppSecUSA 2015. All Material and Methods Patent Pending Globally. All Rights Reserved. Please visit: http://xssWarrior.com

XSS is much more than just <script>alert(1)</script>. Thousands of unique vectors can be built and more complex payloads to evade filters and WAFs. In these slides, cool techniques to bypass them are described, from HTML to javascript. See also http://brutelogic.com.br/blog

Various techniques of TLS Redirection / Virtual Host Confusion attacks https://github.com/GrrrDog/TLS-Redirection

1. The document provides tips for effective hacking and bug hunting in 2015, focusing on web applications. 2. It discusses philosophy shifts towards crowdsourced testing, and techniques for discovery such as finding less tested application parts and acquisitions. 3. The document also covers mapping methodology, parameters to attack, and bypassing filters for XSS, SQLi, file inclusion, and CSRF vulnerabilities.

This document provides information about the Google Chrome web browser, including its version number, what it is, why it should be used, how it compares to other browsers, and summaries of vulnerabilities found in it and other browsers like Firefox. It describes things like Chrome being open source, lightweight, having integrated Google search, and being fast. It also outlines exploits like remote code execution via malicious URLs or automatic file downloads without prompts.

What happens in between the time you type a URL in your browser and the time you see the fully rendered page.

XXE Exposed Webinar Slides: Brief coverage of SQLi and XSS against Web Services to then talk about XXE and XEE attacks and mitigation. Heavily inspired on the "Practical Web Defense" (PWD) style of pwnage + fixing (https://www.elearnsecurity.com/PWD) Full recording here: NOTE: (~20 minute) XXE + XEE Demo Recording starts at minute 25 https://www.elearnsecurity.com/collateral/webinar/xxe-exposed/

This presentation discusses how to properly measure the accuracy of Web Application Firewalls. The presentation explain the 4 attributes that must be measured (FP, FN, TP, TN) and how to properly calculate a WAF's accuracy.

The document discusses various website vulnerabilities and methods of attack, as well as countermeasures. It describes common attacks like cross-site scripting, SQL injection, buffer overflows, and directory traversals. It also covers exploiting error messages, vulnerabilities in website configuration files, and reasons for attacking websites, such as defacing or stealing credit card numbers. The document emphasizes the importance of validating and sanitizing user input, controlling access rights, updating servers with patches, and modifying error messages to prevent attacks.

The document discusses how to develop web applications using ASP.NET, including configuring viewstate and controlstate properties, storing application and session state data, implementing caching using the Cache object, and using data source controls to access relational, XML, and object data. It provides guidance on managing state, retrieving connection strings from a web.config file, and binding data controls to different data sources.

2015 cemented the saying “No one is immune to hacking” and the high profile breaches of Ashley Madison, LastPass and others was proof of that. Quick Heal detected close to 1.4 billion malware samples in 2015 and this number simply shows how widespread and lucrative cyber-attacks have now become. In this webinar, we will look back at some of the notable highlights from malware attacks in 2015, and then chart the way forward for 2016 and provide our listeners with a heads up on what kind of malware threats to expect. The webinar will cover the following points: 1. Malware detection statistics and highlights from 2015 2. Platform statistics for Windows and Android vulnerabilities 3. Insight into Ransomware and Exploit Kits in 2015 4. A look ahead at the cyber security predictions for 2016 and how we can help you

Malware infections or exploited vulnerabilities could significantly impact the safety of customer information so that, before your business has time to react, your public-facing website could be infected and blacklisted by search engines, customer trust could be compromised whilst the clean-up in the aftermath of an attack could wreak havoc with your brand. With increasingly smart malware infections and consequent online data loss, your business must do more than simply react to website security issues.

The document discusses various client-side exploits that can be performed using PDF files. It begins by providing background on PDFs and how their programming capabilities have led to security issues. It then examines different types of exploits such as launch actions, which can execute files or scripts when a PDF is opened, and AcroJS exploits using vulnerable JavaScript APIs. The document also covers obfuscation techniques used to evade antivirus and provides a case study of embedding an executable into a PDF to automatically execute it. In summary, it analyzes the threats posed by malicious PDFs that abuse the format's programming features to carry out exploits or unwanted code execution on a victim's system.

This document summarizes Jeremiah Grossman's 15 years of experience in web security and the state of application security. It discusses threat actors targeting websites, the growing costs of data breaches and cyber insurance, challenges with vulnerability remediation, and the need for more effective software development processes and addressing skill shortages. WhiteHat Security helps companies find and fix application vulnerabilities before exploits.

This document discusses client-side exploits and tools used for testing them in a controlled network environment. It covers using Metasploit on Kali Linux to generate and encode a Meterpreter reverse TCP payload, deploying it on a Windows client virtual machine, and using Meterpreter post-exploitation commands to maintain access including disabling antivirus and establishing persistence. The goal is to achieve a low detection payload and compromise the client while evading detection, though the document notes that no method is foolproof and antivirus vendors adapt.

Jeremiah Grossman, founder and CTO of WhiteHat Security, gave a presentation titled "Top Website Vulnerabilities: Trends, Effects on Governmental Cyber Security, How to Fight Them." Grossman is a frequent international conference speaker, co-founder of the Web Application Security Consortium, and former Yahoo! information security officer. The presentation discussed top website vulnerabilities, how they impact governmental cyber security, and how to identify vulnerabilities before malicious actors.

The document discusses application vulnerabilities, how to identify them, and how to mitigate them. It defines application vulnerabilities as bugs in source code that allow hackers to bypass security, and notes they are common and expensive problems. It then discusses how static code analysis tools can identify vulnerabilities like cross-site scripting and SQL injection. Finally, it presents methods for mitigating identified vulnerabilities, such as encoding user inputs to prevent attacks, and pitches an automatic vulnerability mitigation product.

Computer hardware devices include webcams, scanners, mice, speakers, trackballs, and light pens. Webcams connect via USB or network and are used for video calls and conferencing. Scanners optically scan images and documents into digital formats. Mice are pointing devices that detect motion to move a cursor. Speakers have internal amplifiers and audio jacks. Trackballs contain ball and sensors to detect rotation for cursor movement. Light pens allow pointing directly on CRT displays.

Lien formation complète ici: http://www.alphorm.com/tutoriel/formation-en-ligne-hacking-et-securite-lessentiel Cette formation est une approche offensive des pratiques et des méthodologies utilisées par les hackers dans le cadre d’intrusion sur des réseaux et applications. Nous mettons l’accent sur la compréhension technique et pratique des différentes formes d’attaques existantes, en mettant l’accent sur les vulnérabilités les plus critiques. Vous pourrez, au terme de cette formation réaliser des audits de sécurité (test de pénétration) au sein de votre infrastructure. Il s’agit d’une formation complète sur l’essentiel de ce dont vous avez besoin afin de mettre la casquette du Hacker dans vos tests de vulnérabilité , mais aussi si vous souhaitez avoir une approche offensive de la sécurité informatique , ainsi que toute personne souhaitant acquérir les connaissances techniques d’attaques , il faut savoir attaquer pour mieux se défendre. La présentation des techniques d’attaques et vulnérabilités sont axées pratique s au sein d’un lab de test de pénétration.

Wenn der größte Teil der Logik in JavaScript stattfindet, dann findet auch der größere Teil der Sicherheitsrisiken dort seine Heimat. Und Angreifer finden mit JavaScript eine interessante neue Umwelt, denn die Sprache selbst und auch ihre Heimat in Browser und Node.js bringen viele neue Probleme. Und genau da setzt der Vortrag an: die verblüffenden Unterschiede von JavaScript zu anderen Sprachen, wenn es um Security geht. Die Risiken und auch die Besonderheiten von Browsern und anderen JavaScript-Engines wie Node.js. Die Securityimplikationen von JavaScript-Frameworks bishin zu speziellen Problemen wie mXSS, ReDOS und HTML5-Security.

The document discusses various security vulnerabilities in Ajax applications including CSRF, login CSRF, JavaScript hijacking, XSS, and history stealing. It provides examples of how these attacks can be carried out and emphasizes the importance of validating and sanitizing user input to prevent scripts from being executed maliciously on a site. The document also recommends techniques for protecting against these attacks, such as using authentication tokens and disabling client-side script evaluation for untrusted sources.

How do rich internet applications relate to cross-site scripting and cross-site request forgeries? What countermeasures are available?

The document provides an introduction to web application security and the Damn Vulnerable Web Application (DVWA). It discusses common web vulnerabilities like cross-site scripting (XSS), SQL injection, and information leakage. It demonstrates how to find and exploit these vulnerabilities in DVWA, including stealing cookies, extracting database information, and creating a backdoor PHP shell. The document is intended to educate users about web security risks and show how hackers can compromise applications.

This document summarizes common web application vulnerabilities like SQL injection and cross-site scripting (XSS) for PHP applications. It provides examples of each vulnerability and discusses mitigation strategies like input sanitization, encoding output, and using security frameworks. It also covers other risks like cross-site request forgery (CSRF) and the importance of secure server configurations.

This document summarizes techniques for attacking the frontend security of websites. It discusses DOM-based cross-site scripting using sinks like document.write and sources like document.URL. It also covers information leaks through JavaScript, CSS, and framework templates. Other topics include JSONP, Flash, HTML5 features like postMessage, and mitigations like content security policy. The presentation encourages keeping frameworks updated and checking for newer attacks on older vulnerabilities. It provides examples of complex cross-domain policy and JSONP attacks.

This document discusses JavascriptMVC, an alternative Javascript MVC framework to BackboneJS. It provides an overview of JavascriptMVC's features such as MIT licensing, clear documentation, and providing an almost total solution for building web applications. Potential pros include the licensing, documentation, and comprehensive features. Potential cons include it being less well known and having fewer online resources than BackboneJS in Taiwan. Examples of how it handles classes, CSS, data loading/validation, and views are also provided.

The security of an application is a continuous struggle between solid proactive controls and quality in SDLC versus human weakness and resource restrictions. As the pentester's experience confirms, unfortunatelly even in high-risk (e.g. banking) applications, developed by recognized vendors, the latter often wins - and we end up with critical vulnerabilities. One of the primary reasons is lack of mechanisms enforcing secure code by default, as opposed to manual adding security per each function. Whenever the secure configuration is not default, there will almost inevitably be bugs, especially in complex systems. I will pinpoint what should be taken into consideration in the architecture and design process of the application. I will show solutions that impose security in ways difficult to circumvent unintentionally by creative developers. I will also share with the audience the pentester's (=attacker's) perspective, and a few clever tricks that made the pentest (=attack) painful, or just rendered the scenarios irrelevant.

The security of an application is a continuous struggle between solid proactive controls and quality in SDLC versus human weakness and resource restrictions. As the pentester's experience confirms, unfortunatelly even in high-risk (e.g. banking) applications, developed by recognized vendors, the latter often wins - and we end up with critical vulnerabilities. One of the primary reasons is lack of mechanisms enforcing secure code by default, as opposed to manual adding security per each function. Whenever the secure configuration is not default, there will almost inevitably be bugs, especially in complex systems. I will pinpoint what should be taken into consideration in the architecture and design process of the application. I will show solutions that impose security in ways difficult to circumvent unintentionally by creative developers. I will also share with the audience the pentester's (=attacker's) perspective, and a few clever tricks that made the pentest (=attack) painful, or just rendered the scenarios irrelevant.

Slides for "HTML5 Security Realities" talk at W3Conf: Practical Standards for Web Professionals 2013. Brad Hill - PayPal @hillbrad

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

The document discusses techniques for reverse engineering obfuscated malicious JavaScript code. It begins by explaining that attackers obfuscate exploits to avoid detection. It then covers different approaches for decoding obfuscated JavaScript, including using tools like NJS to run the code outside a browser. An iterative process of running samples through these tools and decoding layers is demonstrated. The goal is to defeat obfuscation techniques and understand the underlying malicious behavior.

A look at how HTML5 aims to plug the holes that Flash has been filling in browsers for the last decade, looking at both HTML5 and non-HTML5 JavaScript APIs. For Flash Brighton in Feb 2010.

XSS (cross-site scripting) is a client-side vulnerability that allows injection of malicious JavaScript which can then be run on a victim's browser. The document discusses different types of XSS (non-persistent, persistent, DOM-based), examples of how to perform basic and advanced XSS attacks, ways XSS has been used on major websites, and how attackers can exploit XSS vulnerabilities for activities like session hijacking, cookie stealing, clickjacking, and more.

This document discusses HTML5 security threats and defenses. It covers the history of HTML standards, new HTML5 features, and vulnerabilities like XSS, cookie/storage stealing, SQL injection, and more. It also provides tools for analyzing HTML5 threats and examples of real attacks exploiting features like WebSQL, local storage, and cross-origin requests. Defenses include input validation, avoiding sensitive data storage, and configuring CORS headers appropriately.

This document discusses security issues and options related to PHP programming. It begins by outlining common attack vectors like validation circumvention, code injection, SQL injection, and cross-site scripting. It then provides examples of each attack and recommendations for preventing them, such as validating all user input and escaping special characters when outputting data. The document also introduces tools for analyzing PHP code security like PHPSecAudit and browser developer toolbars. It emphasizes the importance of securing applications from the beginning rather than as an afterthought.

This document discusses common JavaScript security vulnerabilities like cross-site scripting (XSS), cross-site request forgery (CSRF), and clickjacking. It defines these issues and provides examples of real attacks. The document also outlines solutions for developers, including sanitizing input, escaping output, minimizing the attack surface, and designing with the assumption of breaches. Overall it stresses the importance of a holistic, multi-layered approach to JavaScript security.

The document discusses various techniques for preventing cross-site scripting (XSS) attacks, including encoding untrusted data for different contexts, using content security policy (CSP), and jQuery encoding plugins. It provides examples of using encoding libraries like OWASP Encoder to sanitize input for HTML, JavaScript, CSS, and more. It also describes DOM-based XSS defenses, avoiding dangerous jQuery methods, and the structure of CSP violation reports.

This document discusses techniques for preventing SQL injection and cross-site scripting (XSS) vulnerabilities. It proposes using prepared statements with separate data and control planes as a "safe query object" approach. It also discusses policy-based sanitization of HTML and focusing code reviews on defect detection through annotating suspicious code regions. The overall goal is to help developers adopt architectures and techniques that thoroughly apply technical solutions to recognize and fix security weaknesses.

The document discusses techniques for protecting web applications from client-side attacks using JavaScript (Waf.js). It covers the following key points in 3 sentences: Waf.js provides defenses like CSRF prevention, DOM-based XSS prevention, and detection of unwanted applications. It utilizes parsers like Acorn and DOMPurify to parse and sanitize inputs to prevent injections. The document outlines approaches used by Waf.js to build the AST of an input and search for dangerous code like function calls to prevent attacks while minimizing false positives.

Hackers and developers are compared in the document. Hackers are described as skillful with deep technical understanding but often unsocial and focused on breaking systems. Developers are portrayed as true professionals who work with people to build applications and believe they can change the world. The document then provides examples of how hacking can look simple, such as cross-site scripting attacks on websites. It offers suggestions for prevention including input sanitization and access control. Later it discusses hacking in Node.js and risks of SQL and NoSQL injection. Finally it addresses how hacking and development skills could be applied for social good or security testing.

Everything that I found interesting about machines behaving intelligently during June 2024

YOUR RELIABLE WEB DESIGN & DEVELOPMENT TEAM — FOR LASTING SUCCESS WPRiders is a web development company specialized in WordPress and WooCommerce websites and plugins for customers around the world. The company is headquartered in Bucharest, Romania, but our team members are located all over the world. Our customers are primarily from the US and Western Europe, but we have clients from Australia, Canada and other areas as well. Some facts about WPRiders and why we are one of the best firms around: More than 700 five-star reviews! You can check them here. 1500 WordPress projects delivered. We respond 80% faster than other firms! Data provided by Freshdesk. We’ve been in business since 2015. We are located in 7 countries and have 22 team members. With so many projects delivered, our team knows what works and what doesn’t when it comes to WordPress and WooCommerce. Our team members are: - highly experienced developers (employees & contractors with 5 -10+ years of experience), - great designers with an eye for UX/UI with 10+ years of experience - project managers with development background who speak both tech and non-tech - QA specialists - Conversion Rate Optimisation - CRO experts They are all working together to provide you with the best possible service. We are passionate about WordPress, and we love creating custom solutions that help our clients achieve their goals. At WPRiders, we are committed to building long-term relationships with our clients. We believe in accountability, in doing the right thing, as well as in transparency and open communication. You can read more about WPRiders on the About us page.

Cybersecurity is a major concern in today's connected digital world. Threats to organizations are constantly evolving and have the potential to compromise sensitive information, disrupt operations, and lead to significant financial losses. Traditional cybersecurity techniques often fall short against modern attackers. Therefore, advanced techniques for cyber security analysis and anomaly detection are essential for protecting digital assets. This blog explores these cutting-edge methods, providing a comprehensive overview of their application and importance.

Are you interested in dipping your toes in the cloud native observability waters, but as an engineer you are not sure where to get started with tracing problems through your microservices and application landscapes on Kubernetes? Then this is the session for you, where we take you on your first steps in an active open-source project that offers a buffet of languages, challenges, and opportunities for getting started with telemetry data. The project is called openTelemetry, but before diving into the specifics, we’ll start with de-mystifying key concepts and terms such as observability, telemetry, instrumentation, cardinality, percentile to lay a foundation. After understanding the nuts and bolts of observability and distributed traces, we’ll explore the openTelemetry community; its Special Interest Groups (SIGs), repositories, and how to become not only an end-user, but possibly a contributor.We will wrap up with an overview of the components in this project, such as the Collector, the OpenTelemetry protocol (OTLP), its APIs, and its SDKs. Attendees will leave with an understanding of key observability concepts, become grounded in distributed tracing terminology, be aware of the components of openTelemetry, and know how to take their first steps to an open-source contribution! Key Takeaways: Open source, vendor neutral instrumentation is an exciting new reality as the industry standardizes on openTelemetry for observability. OpenTelemetry is on a mission to enable effective observability by making high-quality, portable telemetry ubiquitous. The world of observability and monitoring today has a steep learning curve and in order to achieve ubiquity, the project would benefit from growing our contributor community.

An invited talk given by Mark Billinghurst on Research Directions for Cross Reality Interfaces. This was given on July 2nd 2024 as part of the 2024 Summer School on Cross Reality in Hagenberg, Austria (July 1st - 7th)

Blockchain technology is transforming industries and reshaping the way we conduct business, manage data, and secure transactions. Whether you're new to blockchain or looking to deepen your knowledge, our guidebook, "Blockchain for Dummies", is your ultimate resource.

If you’ve ever had to analyze a map or GPS data, chances are you’ve encountered and even worked with coordinate systems. As historical data continually updates through GPS, understanding coordinate systems is increasingly crucial. However, not everyone knows why they exist or how to effectively use them for data-driven insights. During this webinar, you’ll learn exactly what coordinate systems are and how you can use FME to maintain and transform your data’s coordinate systems in an easy-to-digest way, accurately representing the geographical space that it exists within. During this webinar, you will have the chance to: - Enhance Your Understanding: Gain a clear overview of what coordinate systems are and their value - Learn Practical Applications: Why we need datams and projections, plus units between coordinate systems - Maximize with FME: Understand how FME handles coordinate systems, including a brief summary of the 3 main reprojectors - Custom Coordinate Systems: Learn how to work with FME and coordinate systems beyond what is natively supported - Look Ahead: Gain insights into where FME is headed with coordinate systems in the future Don’t miss the opportunity to improve the value you receive from your coordinate system data, ultimately allowing you to streamline your data analysis and maximize your time. See you there!

Everything that I found interesting last month about the irresponsible use of machine intelligence

Invited Remote Lecture to SC21 The International Conference for High Performance Computing, Networking, Storage, and Analysis St. Louis, Missouri November 18, 2021

These fighter aircraft have uses outside of traditional combat situations. They are essential in defending India's territorial integrity, averting dangers, and delivering aid to those in need during natural calamities. Additionally, the IAF improves its interoperability and fortifies international military alliances by working together and conducting joint exercises with other air forces.