Web application security is the process of securing confidential data stored online from unauthorized access and modification. This is accomplished by enforcing stringent policy measures.
A web threat is any threat that uses the World Wide Web to facilitate cybercrime. Web threats use multiple types of malware and fraud, all of which utilize HTTP or HTTPS protocols, but may also employ other protocols and components, such as links in email or IM, or malware attachments or on servers that access the Web.
Web application security is the process of securing confidential data stored online from unauthorized access and modification. This is accomplished by enforcing stringent policy measures.
A web threat is any threat that uses the World Wide Web to facilitate cybercrime. Web threats use multiple types of malware and fraud, all of which utilize HTTP or HTTPS protocols, but may also employ other protocols and components, such as links in email or IM, or malware attachments or on servers that access the Web.
This talk is a generic but comprehensive overview of security mechanism, controls and potential attacks in modern browsers. The talk focuses also on new technologies, such as HTML5 and related APIs to highlight new attack scenario against browsers.
This presentation is from Null/OWASP/G4H November Bangalore MeetUp 2014.
technology.inmobi.com/events/null-owasp-g4h-november-meetup
Talk Outline:-
A) Reflective-(Non-Persistent Cross-site Scripting)
- What is Reflective Cross-site scripting.
- Testing for Reflected Cross site scripting
How to Test
- Black Box testing
- Bypass XSS filters
- Gray Box testing
Tools
Defending Against Reflective Cross-site scripting.
Examples of Reflective Cross-Site Scripting Attacks.
B) Stored -(Persistent Cross-site Scripting)
What is Stored Cross-site scripting.
How to Test
- Black Box testing
- Gray Box testing
Tools
Defending Against Stored Cross-site scripting.
Examples of Stored Cross-Site Scripting Attacks.
Security Best Practices for Bot BuildersMax Feldman
Explore common web application vulnerabilities bot builders should know. You’ll learn how to locate and prevent these vulnerabilities, and you’ll come away with best practices for building bots your customers can trust. For Slack getting started guides: https://www.api.slack.com
Cross site scripting (XSS) is a type of computer security vulnerability typically found in web applications, but in proposing defensive measures for cross site scripting the websites validate the user input and determine if they are vulnerable to cross site scripting. The major considerations are input validation and output sanitization.
There are lots of defense techniques introduced nowadays and even though the coding methods used by developers are evolving to counter attack cross site scripting techniques, still the security threat persist in many web applications for the following reasons:
• The complexity of implementing the codes or methods.
• Non-existence of input data validation and output sanitization in all input fields of the application.
• Lack of knowledge in identifying hidden XSS issues etc.
This proposed project report will briefly discuss what cross site scripting is and highlight the security features and defense techniques that can help against this widely versatile attack.
This presentation covers the Cross site scripting attacks and defences in web applications, this talk was delivered as part of OWASP Hyderabad Chapter meet. Comments and suggestions are welcome.
XSS? Sure, we all have heard about - XSS, stands for Cross Site Scripting, but XSS sounds lot more cool, huh?
Have your account or website been hacked? Or you sure might have heard about such a compromised account or site from someone? Have you been ever tricked by a website? Have you ever noticed your everyday trusted site behaving abnormally, throwing weird content at you?
Nowadays, these are very common incidents.
Recently:
Pentagon XSS Hack
Facebook XSS Hack
How hackers do it all? Why the hell do they do it? Would you like to check it out live, do some hands-on? And focus on how to secure against this nasty vulnerability.
Come join us to see - HOW IT HAPPENS and MAKE IT HAPPEN YOURSELF.
This presentation explores on how to test Cross site scripting Injection Vulnerabilities, prevention, Best practice, small lab(introduction to web
goat) etc.
Overview of hacking techniques used to attack modern web applications focused on application layer. Cross Site Scripting, SQL Injection, Buffer Overflow, Phishing attacks presented.
BsidesDelhi 2018: DomGoat - the DOM Security PlaygroundBSides Delhi
Presenter: Lavakumar Kuppan
Abstract: In a Mobile application pentest the tester focuses on identifying vulnerabilities on both the mobile app and the backend service the app talks to. However, in a web application pentest the client-side is usually ignored and the focus is placed entirely on security issues on the server-side. Modern browsers have several capabilities which make the JS code running in the browser almost as complex powerful as a mobile app and by extension also prone to serious security issues. Most pentesters remain unaware of these security issues and their severity. DOMGoat is an open source application that is developed primarily to help pentesters understand the various client-side security issues that can occur in the DOM. This includes everything from the several variants of DOM XSS to JavaScript cryptography to client-side data leakage and more. This talk will explain the various security issues that affect the DOM and also show how DOMGoat can be used to learn about these issues.
Identifying Cross Site Scripting Vulnerabilities in Web ApplicationsPorfirio Tramontana
Cross Site Scripting (XSS) is a vulnerability of a Web Application that is essentially caused by the failure of the application to check up on user input before returning it to the client’s web browser. Without an adequate validation, user input may include malicious code that may be sent to other clients and unexpectedly executed by their browsers, thus causing a security attack.
Techniques to prevent this type of attacks require that all application input must be checked up and filtered, encoded, or validated before sending them to any user. In order to discover the XSS vulnerabilities in a Web application, traditional source code analysis techniques can be exploited. In this paper, in order to assess the XSS vulnerability of a Web application, an approach that combines static and dynamic analysis of the Web application is presented. Static analysis based criteria have been defined to detect potential vulnerabilities in the server pages of a Web application, while a process of dynamic analysis has been proposed in order to detect actual vulnerabilities. Some case studies have been carried out, giving encouraging results.
Google Developer Group Udaipur in association with Sanskrut Corporation as Board Of Advisors had organised a meetup on Offline Web Apps. The meetup included - Hands On Session where we explored Components Of Offline Web App such as Service Worker and Indexed DB. We also discussed the concepts of Web Stacks, latest features available for web, the shift of native apps to web apps, web caching, Pre-rendering and Web App Manifest .
The speakers for the event were - Kautilya Bhardwaj and Praveen Soni.
This talk is a generic but comprehensive overview of security mechanism, controls and potential attacks in modern browsers. The talk focuses also on new technologies, such as HTML5 and related APIs to highlight new attack scenario against browsers.
This presentation is from Null/OWASP/G4H November Bangalore MeetUp 2014.
technology.inmobi.com/events/null-owasp-g4h-november-meetup
Talk Outline:-
A) Reflective-(Non-Persistent Cross-site Scripting)
- What is Reflective Cross-site scripting.
- Testing for Reflected Cross site scripting
How to Test
- Black Box testing
- Bypass XSS filters
- Gray Box testing
Tools
Defending Against Reflective Cross-site scripting.
Examples of Reflective Cross-Site Scripting Attacks.
B) Stored -(Persistent Cross-site Scripting)
What is Stored Cross-site scripting.
How to Test
- Black Box testing
- Gray Box testing
Tools
Defending Against Stored Cross-site scripting.
Examples of Stored Cross-Site Scripting Attacks.
Security Best Practices for Bot BuildersMax Feldman
Explore common web application vulnerabilities bot builders should know. You’ll learn how to locate and prevent these vulnerabilities, and you’ll come away with best practices for building bots your customers can trust. For Slack getting started guides: https://www.api.slack.com
Cross site scripting (XSS) is a type of computer security vulnerability typically found in web applications, but in proposing defensive measures for cross site scripting the websites validate the user input and determine if they are vulnerable to cross site scripting. The major considerations are input validation and output sanitization.
There are lots of defense techniques introduced nowadays and even though the coding methods used by developers are evolving to counter attack cross site scripting techniques, still the security threat persist in many web applications for the following reasons:
• The complexity of implementing the codes or methods.
• Non-existence of input data validation and output sanitization in all input fields of the application.
• Lack of knowledge in identifying hidden XSS issues etc.
This proposed project report will briefly discuss what cross site scripting is and highlight the security features and defense techniques that can help against this widely versatile attack.
This presentation covers the Cross site scripting attacks and defences in web applications, this talk was delivered as part of OWASP Hyderabad Chapter meet. Comments and suggestions are welcome.
XSS? Sure, we all have heard about - XSS, stands for Cross Site Scripting, but XSS sounds lot more cool, huh?
Have your account or website been hacked? Or you sure might have heard about such a compromised account or site from someone? Have you been ever tricked by a website? Have you ever noticed your everyday trusted site behaving abnormally, throwing weird content at you?
Nowadays, these are very common incidents.
Recently:
Pentagon XSS Hack
Facebook XSS Hack
How hackers do it all? Why the hell do they do it? Would you like to check it out live, do some hands-on? And focus on how to secure against this nasty vulnerability.
Come join us to see - HOW IT HAPPENS and MAKE IT HAPPEN YOURSELF.
This presentation explores on how to test Cross site scripting Injection Vulnerabilities, prevention, Best practice, small lab(introduction to web
goat) etc.
Overview of hacking techniques used to attack modern web applications focused on application layer. Cross Site Scripting, SQL Injection, Buffer Overflow, Phishing attacks presented.
BsidesDelhi 2018: DomGoat - the DOM Security PlaygroundBSides Delhi
Presenter: Lavakumar Kuppan
Abstract: In a Mobile application pentest the tester focuses on identifying vulnerabilities on both the mobile app and the backend service the app talks to. However, in a web application pentest the client-side is usually ignored and the focus is placed entirely on security issues on the server-side. Modern browsers have several capabilities which make the JS code running in the browser almost as complex powerful as a mobile app and by extension also prone to serious security issues. Most pentesters remain unaware of these security issues and their severity. DOMGoat is an open source application that is developed primarily to help pentesters understand the various client-side security issues that can occur in the DOM. This includes everything from the several variants of DOM XSS to JavaScript cryptography to client-side data leakage and more. This talk will explain the various security issues that affect the DOM and also show how DOMGoat can be used to learn about these issues.
Identifying Cross Site Scripting Vulnerabilities in Web ApplicationsPorfirio Tramontana
Cross Site Scripting (XSS) is a vulnerability of a Web Application that is essentially caused by the failure of the application to check up on user input before returning it to the client’s web browser. Without an adequate validation, user input may include malicious code that may be sent to other clients and unexpectedly executed by their browsers, thus causing a security attack.
Techniques to prevent this type of attacks require that all application input must be checked up and filtered, encoded, or validated before sending them to any user. In order to discover the XSS vulnerabilities in a Web application, traditional source code analysis techniques can be exploited. In this paper, in order to assess the XSS vulnerability of a Web application, an approach that combines static and dynamic analysis of the Web application is presented. Static analysis based criteria have been defined to detect potential vulnerabilities in the server pages of a Web application, while a process of dynamic analysis has been proposed in order to detect actual vulnerabilities. Some case studies have been carried out, giving encouraging results.
Google Developer Group Udaipur in association with Sanskrut Corporation as Board Of Advisors had organised a meetup on Offline Web Apps. The meetup included - Hands On Session where we explored Components Of Offline Web App such as Service Worker and Indexed DB. We also discussed the concepts of Web Stacks, latest features available for web, the shift of native apps to web apps, web caching, Pre-rendering and Web App Manifest .
The speakers for the event were - Kautilya Bhardwaj and Praveen Soni.
Lightning Talk #9: How UX and Data Storytelling Can Shape Policy by Mika Aldabaux singapore
How can we take UX and Data Storytelling out of the tech context and use them to change the way government behaves?
Showcasing the truth is the highest goal of data storytelling. Because the design of a chart can affect the interpretation of data in a major way, one must wield visual tools with care and deliberation. Using quantitative facts to evoke an emotional response is best achieved with the combination of UX and data storytelling.
Succession “Losers”: What Happens to Executives Passed Over for the CEO Job?
By David F. Larcker, Stephen A. Miles, and Brian Tayan
Stanford Closer Look Series
Overview:
Shareholders pay considerable attention to the choice of executive selected as the new CEO whenever a change in leadership takes place. However, without an inside look at the leading candidates to assume the CEO role, it is difficult for shareholders to tell whether the board has made the correct choice. In this Closer Look, we examine CEO succession events among the largest 100 companies over a ten-year period to determine what happens to the executives who were not selected (i.e., the “succession losers”) and how they perform relative to those who were selected (the “succession winners”).
We ask:
• Are the executives selected for the CEO role really better than those passed over?
• What are the implications for understanding the labor market for executive talent?
• Are differences in performance due to operating conditions or quality of available talent?
• Are boards better at identifying CEO talent than other research generally suggests?
Introduction to Web Application Security - Blackhoodie US 2018Niranjanaa Ragupathy
This slide deck is structured to start from the basics of web application security and explores common web attacks. The first half is packed with theory, while we are all for jumping into exercises having a solid grasp of the fundamentals will be crucial to your success in webappsec.
The deck dives into XSS, CSRF and SQL injections. It briefly outlines others like XXE, SSRF, logic errors, broken session management, and so on.
The recent SA-CORE-2014-005 vulnerability has demonstrated that hackers have learnt how to take advantage of Drupal’s functionality to infect a site and go unnoticed. Site builders and site maintainers have a large role to play in preventing these kinds of disasters. Security doesn’t have to be a pain to implement and plan for.
The primary goal of this session is to give people a solid basis in the most common security issues so they can quickly identify those security issues. From there, we'll move into some other common pain-points of site builders like frequently made mistakes, modules to enhance security, and evaluating contributed module quality.
The WP REST API infrastructure was introduced in WordPress 4.4. The introduction of this infrastructure allows WordPress developers to now use WordPress as a headless CMS. A headless CMS has its frontend component (the head) stripped and removed from its backend, and what remains is a backend delivering content via an API. Some common use cases for headless CMS are as follows:
Serving data to other web applications
Mobile Apps
Websites and web apps built with MVC-style JavaScript frameworks
Developers can install the WP REST API plugin to expose endpoints for WordPress for posts, pages, media and users. Developers can also extend the WordPress core REST infrastructure to register their own endpoints for custom post types and WordPress options.
The WP REST API plugin will expose database content via JSON. This data can be used by developers to create sites using JavaScript frameworks such as React and also use the JSON data in mobile apps.
Bronson will explain and demonstrate how you can use WordPress and the WP REST API to create a website that uses React on the frontend and WordPress on the backend as a headless CMS.
JSFest 2019: Technology agnostic microservices at SPA frontendVlad Fedosov
We'll go through the possible ways to bring technology agnostic microservice architecture to the frontend, review pros/cons of each of them. We also will check the "ultimate solution" that handles microservices with SSR in SPA manner.
This talk will be interesting for ones who have multiple teams working on the same frontend application.
The Hacking Games - A Road to Post Exploitation Meetup - 20240222.pptxlior mazor
Stay safe, grab a drink and join us virtually for our upcoming "The Hacking Game - A Road to Post Exploitation" meetup
to learn how hackers can compromise the software supply chain, advanced data protection methods on WebLogic Server and
how to use AI in order to protect your software.
Agenda:
17:00 - 17:10 - 'Opening words' - by Gidi Farkash (CISO at Pipl Security)
17:10 - 17:40 - 'Tracking Attackers in Open Source Supply Chain - Lessons Learned' - by Jossef Harush Kadouri (Head of Software Supply Chain Security at Checkmarx)
17:40 - 18:20 - 'WebLogic - The Road to Post Exploitation' - by Amit German (Cyber Security Researcher at Pentera)
18:20 - 19:00 - 'AI In The Hands of Application Security' - by Brit Glazer (Head of Information Security at Unit)
Real-time applications with sockets and websockets. Introduction to Smartfoxs...Pablo Monterde Perez
This slides try to analyze what is a multiuser real-time application and what is the the best protocol that fits this king of applications. Then it introduce Smartfoxserver 2x, a java multi-platform client/server SDK designed to to rapidly create multiuser experiences.
Hacking Vulnerable Websites to Bypass FirewallsNetsparker
These slides were used by our security researcher Sven Morgenroth during the live demo of how to hack web applications and bypass firewalls. You can watch the live demo here: https://www.netsparker.com/blog/web-security/vulnerable-web-applications-developers-target/#livedemo
Water billing management system project report.pdfKamal Acharya
Our project entitled “Water Billing Management System” aims is to generate Water bill with all the charges and penalty. Manual system that is employed is extremely laborious and quite inadequate. It only makes the process more difficult and hard.
The aim of our project is to develop a system that is meant to partially computerize the work performed in the Water Board like generating monthly Water bill, record of consuming unit of water, store record of the customer and previous unpaid record.
We used HTML/PHP as front end and MYSQL as back end for developing our project. HTML is primarily a visual design environment. We can create a android application by designing the form and that make up the user interface. Adding android application code to the form and the objects such as buttons and text boxes on them and adding any required support code in additional modular.
MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software. It is a stable ,reliable and the powerful solution with the advanced features and advantages which are as follows: Data Security.MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
ACEP Magazine edition 4th launched on 05.06.2024Rahul
This document provides information about the third edition of the magazine "Sthapatya" published by the Association of Civil Engineers (Practicing) Aurangabad. It includes messages from current and past presidents of ACEP, memories and photos from past ACEP events, information on life time achievement awards given by ACEP, and a technical article on concrete maintenance, repairs and strengthening. The document highlights activities of ACEP and provides a technical educational article for members.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Harnessing WebAssembly for Real-time Stateless Streaming PipelinesChristina Lin
Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.
bank management system in java and mysql report1.pdf
Protecting Users Against XSS-based Password Manager Abuse
1. Protecting users against XSS-based
password manager abuse
AsiaCCS 2014, Kyoto
Ben Stock, Martin Johns
2. Agenda
● Basics on Password Managers
● Intention & Implementation
● Automating attacks on Password Managers
● Analysis of browsers and applications
● Analysis of built-in password managers
● Study of password fields on the Web
● Our proposal to a more secure password manager
● Summary & Conclusion
2
4. Password managers
● In a perfect world... one password per site
● hard task to remember multiple complex passwords
● Solution: password managers
● take burden to remember these passwords off the user
● Implementation in two locations
1. submitting a form è ask user to save password
2. loading a form è fill in user and password
4
host=http://localhost, user=user1, pwd=secret
1
2
5. Password manager security issues
● Password manager detects form
● looks up stored credentials
● inserts them into form (and thus the DOM)
● DOM is accessible by JavaScript
● both benign code and XSS payloads
● Attacker code may access field data (in clear text)
5
6. Automating attacks
● Consider XSS attacker (similarly for network attacker)
● capable of injecting HTML markup (and JavaScript code)
1. inject form with user/password fields
2. wait for the Password Manager to fill out form
3. retrieve credentials and send them to the attacker
6
Password
Manager
A.acker
Code
8. Factors for a successful attack
● URL matching
● is XSS on any document on the domain sufficent?
● Form matching
● can we use a minimal form to easily automate attacks?
● Autofilling in frames
● can we exploit multiple domains the same time?
● User interaction
● can we fully automate the attack?
● Autocomplete attribute
● can a Web site opt out of password storage?
8
10. What we learned thus far...
● Automated attacks are dependent on
● password manager implementations
● Web application implementation
● autocomplete=off!
● (delivery
over
HTTPS)
● Two analyses to conduct
● Password manager implementations
● Chrome, Firefox, IE, Safari, Opera and Maxthon
● Analysis of password fields on the Web
● Secure delivery, autocomplete, ...
10
11. Highlights of built-in password managers*
11
● URL matching
● only IE stores the URL, Maxthon does not even store protocol or
port
● Form matching
● no browser stored structure/target URL
● Autofilling in frames
● only IE refuses to insert credentials into frames
● User interaction
● only IE requires user interaction
● Autocomplete attribute
● Chrome, Opera and Maxthon do not adhere to autocomplete
*refer to the paper for the complete analysis
12. Analysis of password fields on the Web
● Crawl of Alexa Top 4000
● natural languages matching to detect login forms
● wrapping getter for password fields to detect access
12
Characteris*c
#
Sites
%
rel.
%
abs.
Password
field
2,143
100%
53,6%
Form
on
HTTPS
page
821
38,3%
20,5%
AcMon
on
HTTPS
page
1,197
55,9%
29,9%
Autocomplete
off
293
13,6%
7,3%
JavaScript
access
325
15,1%
8,1%
13. Summarizing our findings
● Password managers are quite relaxed in matching criteria
● XSS on same-domain is sufficient for all but IE
● Chrome, Opera and Maxthon don't adhere to autocomplete
● Password fields are meant to work with managers
● only 13,6% opt-out with autocomplete=off!
èPassword managers need to be protected
against XSS attackers
13
15. Mismatch in notion/implementations
● Password Managers should aid in authentication
● Authentication: "Credentials are sent to the server"
● Implementation: "Credentials are inserted into forms and
then sent to the server"
● We propose to align implementation with notion
15
17. Constraints for this approach
● Potential pitfalls
● Attacker changes a form's target
● posting data to his own server / a page that reflects the content
● Attacker changes method to GET
● .. and subsequently reads the URL to which a frame was redirected
● Proposed constraints
● strict checking of form target URL
● exchanging nonce only in POST parameters
17
19. PoC Implementation
POST /login.php
Data: user=user1&pwd=nonce
POST /login.php
Data: user=user1&pwd=secret
Our Extension
POST /search.php
Data: user=user1&query=nonce
POST /search.php
Data: user=user1&query=nonce
19
20. Functional evaluation
● 325 domains used JavaScript to access password fields
● 229 domains only check that field is not empty
● 96 domains send password via XHR
● 23 domains hash password before sending it out
● 1 domain applies base64 encoding
● 6 domains send password in GET parameters
● 30/2143 domains have issues with our solution
● 98,6% of all domains we analyzed work just fine
● storing passwords in XHRs is not currently supported by
browsers
20
22. Summary & Conclusion
● Most current implementations of password managers
allow for automatic stealing of passwords
● Cause: passwords are inserted into forms
● not into outgoing request
● We propose alignment of notion and implementation
● PoC implemented as a Firefox extension
● working with 98,6% of domains we analyzed
22
23. Thank you for your attention!
Special thanks to my student workers Eric Schmall and Armin Stock
● @kcotsneb
● http://kittenpics.org
● ben.stock@fau.de