Cross Site Scripting Augusta For Matrix Session
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This document discusses cross-site scripting (XSS) attacks and methods to prevent them. XSS attacks often target sites that store usernames and passwords in cookies. Attackers can steal user cookies by injecting malicious JavaScript. Defenses include properly filtering all untrusted input, using HTML scrubbers to remove dangerous tags and attributes, and keeping software up to date. The document also notes there are legitimate uses of mashups and JavaScript.
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Xss is more than a simple threat
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.
Xss is more than a simple threat
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.
Avoiding Cross Site Scripting - Not as easy as you might think
The document discusses avoiding cross-site scripting (XSS) attacks. It notes that while some experts say XSS protection is easy, it can actually be challenging. It provides statistics on how common XSS errors are. It then discusses the risks of XSS attacks, including stealing data from clients or servers and exploiting browsers. It explains different types of XSS attacks and demonstrates examples. The document emphasizes the importance of input validation and output encoding to prevent XSS. It also discusses challenges like DOM-based XSS and provides recommendations for developing secure code.
Joomla security nuggets
The document discusses common web application security threats like cross-site request forgery (CSRF), cross-site scripting (XSS), and SQL injections. It provides examples of each threat and explains how Joomla handles them, such as by adding tokens for CSRF protection and escaping user input. The document also covers other attacks like direct code access, register globals being on, and outlines best practices for secure web development like input sanitization and validation.
Javascript Security
It's time to deprecate JavaScript. It's security model and the language itself are appalling.
As data moves into the cloud the JavaScript threat is increasing and I believe the only way to fix this is to start all over again. The 14 year old language and security model aren't up to today's threats.
Web Application Security
This document discusses common web application security issues such as cross-site scripting (XSS), cross-site request forgery (CSRF), SQL injection, regular expression denial of service (ReDos), and open redirects. It provides examples of each vulnerability and outlines solutions such as input filtering, parameterized queries, and whitelisting redirect domains. The document concludes with tips for keeping applications secure such as code reviews, security announcements, and documentation of common patterns.
Spyware
This document defines spyware and discusses methods used for passive spyware tracking, specifically web beacons and cookies. It demonstrates how a web beacon can be used to deposit a cookie and track browsing activity without consent. The document concludes that browser settings can prevent cookie deposit and users should be cautious about what they download or open online.
Spyware
This document defines spyware and discusses methods used for passive spyware tracking, specifically web beacons and cookies. It demonstrates how a web beacon can be used to deposit a cookie and track browsing activity without consent. The document concludes that browser settings can prevent unauthorized cookie deposits and users should be cautious about what software they download and install.
Owasp Top 10 - Owasp Pune Chapter - January 2008
The document discusses various cybersecurity topics including vulnerabilities, threats, attacks, and countermeasures. It provides an overview of the Open Web Application Security Project (OWASP) which focuses on improving application security. It also summarizes common web vulnerabilities like cross-site scripting (XSS), SQL injection, buffer overflows, and cross-site request forgery (CSRF). Recommendations are given to prevent these vulnerabilities.
Django Web Application Security
This document discusses security best practices for Django web applications. It begins by introducing the author and their background in Python, Django, and computer security. It then covers common web vulnerabilities and attacks like information disclosure, input validation issues, session hijacking, and denial of service. Throughout, it provides recommendations for how to configure Django and code defensively to mitigate these risks, such as using parameterized queries, input sanitization, secure sessions, and cross-site request forgery protection. It emphasizes adopting a layered security approach and being vigilant about updates and monitoring.
Top 10 Web Security Vulnerabilities (OWASP Top 10)
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.
Xss.e xopresentation from eXo SEA
This document discusses cross-site scripting (XSS) attacks, how they work, examples of different types of XSS attacks, their impact, and how to prevent them. It also provides examples of how XSS vulnerabilities were detected and exploited in specific eXo products, and references for audiences to learn more about secure coding practices and XSS prevention.
Defeating Cross-Site Scripting with Content Security Policy (updated)
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.
PHP Security
This document discusses various security best practices for PHP applications, including sanitizing user input, validating data, preventing SQL injection and cross-site scripting (XSS), securely storing passwords, using cookies safely, and enabling error logging and reporting. It outlines 12 steps like sanitizing input, validating data types, escaping output, and disabling register_globals to help make PHP applications more secure.
Intro to Web Application Security
Introduction to Web Application Security presented at for the Penn State Information Assurance Club (Fall 2007)
Web Security
This document discusses various web security topics such as never trusting user inputs, input validation, SQL injection, cross-site scripting, session hijacking, and cross-site request forgery. It emphasizes the importance of input sanitization, using prepared statements, and defensive coding practices to prevent security vulnerabilities. Common threats like SQL injection can occur if direct user input is inserted into SQL queries. The document also provides tips on secure programming, updating scripts, and resources for further reading on web security best practices.
Don't get stung - an introduction to the OWASP Top 10
An updated version of my OWASP Top 10 presentation, new and improved for the updated 2010 OWASP list.
2009 Barcamp Nashville Web Security 101
A super-brief (25 minute) talk on the basics of web security. A video (with poor audio that doesn't kick in until 9 minutes in, I'm sorry) is available here:
http://www.ustream.tv/recorded/2369801
<img src="xss.com">
The document discusses various techniques for evading XSS filters, including ModSecurity. It provides examples of how filters like ModSecurity can miss attacks that use encoding, unusual tags, or JavaScript tricks. The filters are shown to be ineffective against attacks that avoid common keywords or use alternative encodings.
Fav
The document discusses various cross-site scripting (XSS) attacks and evasion techniques that can bypass common XSS filters like ModSecurity and PHP-IDS. It provides examples of XSS payloads that exploit weaknesses in these filters and evade detection. Recommended defenses include strengthening XSS filters by improving regular expressions and rulesets.
Similar to Cross Site Scripting Augusta For Matrix Session (20)
Avoiding Cross Site Scripting - Not as easy as you might think
Avoiding Cross Site Scripting - Not as easy as you might think
Top 10 Web Security Vulnerabilities (OWASP Top 10)
Top 10 Web Security Vulnerabilities (OWASP Top 10)
Defeating Cross-Site Scripting with Content Security Policy (updated)
Defeating Cross-Site Scripting with Content Security Policy (updated)
Don't get stung - an introduction to the OWASP Top 10
Don't get stung - an introduction to the OWASP Top 10
Cross Site Scripting Augusta For Matrix Session
- 1. By : Augusta http://www.steve.org.uk/Hacks/XSS/index.html
- 14. Pearl code #!/usr/bin/perl -w use HTML::Scrubber; use strict; # my $html = q[ <style type="text/css"> BAD { background: #666; color: #666;} </style> <script language="javascript"> alert("Hello, I am EVIL!"); </script> <HR> a => <a href=1>link </a> br => <br> b => <B> bold </B> u => <U> UNDERLINE </U> ]; # my $scrubber = HTML::Scrubber->new( allow => [ qw[ p b i u hr br ] ] ); # # print $scrubber->scrub($html); # # $scrubber->deny( qw[ p b i u hr br ] ); # # print $scrubber->scrub($html); # #