X-XSS- Protection
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Browser Security Information
Browser Security Information Customer security is important to us. Our top priority is to protect the privacy of your personal account information and your financial transactions FirstLine Mortgages is leading the way in Internet banking services and uses several layers of robust security technology to help ensure the confidentiality of transactions across the Internet. The first security level begins with your Web browser. When you access FirstLine Mortgages Internet Site , your browser is checked to ensure that it meets our minimum requirements. Additionally, we only allow customers with browsers that use 128-bit encryption (one of the highest levels of browser security available today) to bank on our web site. But, even with this validation, there are other precautions you should follow to maximize your protection. You have a responsibility to ensure your own security. The browser validation will verify the browser type you are using, your browser encryption level, the version of Netscape or Microsoft browser, as well as Javascript and cookies being enabled. To access -FirstLine Mortgages Internet site , you need to use: • a Netscape browser version 4.06 or better with a minimum 128-bit encryption technology • a Microsoft browser version 4.01 SP2 or better with a minimum 128-bit encryption technology • Javascript (please see below for more information about how to check and enable Javascript support) • Cookies (see below) If your browser does not meet all of these requirements, you will need to upgrade your browser to access the FirstLine Internet Site . To upgrade your browser, select the Netscape or Microsoft button below and download the latest browser version. -
But Were Afraid to Ask!)
05_576593 ch01.qxd 10/12/04 9:55 PM Page 9 Chapter 1 All You Ever Wanted to Know about JavaScript (But Were Afraid to Ask!) In This Chapter ᮣ Understanding a working definition of JavaScript ᮣ Dispelling common JavaScript misconceptions ᮣ Getting started with JavaScript tools ᮣ Finding information online aybe you’ve surfed to a Web site that incorporates really cool features, Msuch as ߜ Images that change when you move your mouse over them ߜ Slideshow animations ߜ Input forms with pop-up messages that help you fill in fields correctly ߜ Customized messages that welcome repeat visitors By using JavaScript and the book you’re reading right now you can create all these effects and many more! The Web page in Figure 1-1 shows you an example COPYRIGHTEDof the kinds of things that you canMATERIAL look forward to creating for your own site. A lot has changed since the previous edition of JavaScript For Dummies came out. Perhaps the biggest change is the evolution of DHTML, or dynamic HTML. DHTML refers to JavaScript combined with HTML and cascading style sheets, and it’s a powerful combination you can use to create even more breathtak- ingly cool Web sites than ever before. 05_576593 ch01.qxd 10/12/04 9:55 PM Page 10 10 Part I: Building Killer Web Pages for Fun and Profit Figure 1-1: JavaScript lets you add interactive features to your Web site quickly and easily. Along with this increased power comes increased complexity, unfortunately — but that’s where this new, improved, better-tasting edition of JavaScript For Dummies comes in! Even if you’re not a crackerjack programmer, you can use the techniques and sample scripts in this book to create interactive Web pages bursting with animated effects. -
Javascript Security
Color profile: Generic CMYK printer profile Composite Default screen Complete Reference / JavaScript: TCR / Powell & Schneider / 225357-6 / Chapter 22 Blind Folio 679 22 JavaScript Security ownloading and running programs written by unknown parties is a dangerous proposition. A program available on the Web could work as advertised, but then Dagain it could also install spyware, a backdoor into your system, or a virus, or exhibit even worse behavior such as stealing or deleting your data. The decision to take the risk of running executable programs is typically explicit; you have to download the program and assert your desire to run it by confirming a dialog box or double-clicking the program’s icon. But most people don’t think about the fact that nearly every time they load a Web page, they’re doing something very similar: inviting code—in this case, JavaScript—written by an unknown party to execute on their computer. Since it would be phenomenally annoying to have to confirm your wish to run JavaScript each time you loaded a new Web page, the browser implements a security policy designed to reduce the risk such code poses to you. A security policy is simply a set of rules governing what scripts can do, and under what circumstances. For example, it seems reasonable to expect browsers’ security policies to prohibit JavaScript included on Web pages downloaded from the Internet from having access to the files on your computer. If they didn’t, any Web page you visited could steal or destroy all of your files! In this chapter we examine the security policies browsers enforce on JavaScript embedded in Web pages. -
X Content Security Policy Web Config
X Content Security Policy Web Config Volar Odin still misforms: wonted and tenable Paddie redrives quite absolutely but come-on her quadricentennial grandly. Cyprian and adiabatic Schroeder always chap vulgarly and annul his pulsimeters. Kyle tumefying brusquely while corollaceous Ron cudgellings decorative or knell immanently. Thanks admin if some prefer to use a look something else is because the content security policy to keep abreast of security web Content Security Policy KeyCDN Support. The X-Frame-Options XFO security header helps modern web browsers. Content-Security-Policy Header CSP Reference & Examples. Content Security Policy CSP is a security mechanism that helps protect against. Learn guide to install integrate and configure CKEditor 5 Builds and have to. HTTP Strict Transport Security HSTS allows web servers to declare. Firefox is using X-Content-Security-Policy and Webkit Chrome Safari are using. To junk is configure your web server to furniture the Content-Security-Policy HTTP header. Content Security Policy CSP allows you to film what resources are allowed to. Manage Content Security Policy from Episerver CMS Gosso. CLI Reference FortiADC 600 Fortinet Documentation Library. In case in need off more relaxed content security policy for example although you. More snow more web apps configure secured endpoints and are redirecting. This is dependent because XSS bugs have two characteristics which make combat a particularly serious threat in the security of web applications XSS is ubiquitous. CSP is intended to propose an additional layer of security against cross-site scripting and other malicious web-based attacks CSP is implemented as a HTTP response. Always the Content-Security-Policy. -
Implementing Content Security Policy at a Large Scale
Security Content Security Policy. How to implement on an industrial scale $ whois Product security team lead in Yandex OWASP Russia chapter leader Yet another security blogger oxdef.info Does anybody use CSP? < 1% of all sites :-( But … Empty slide about XSS Because no more slides about XSS Content security policy Content security policy Browser side mechanism to mitigate XSS attacks Open live standard www.w3.org/TR/CSP Source whitelists and signatures for client side code and resources of web application Content-Security-Policy and Content-Security-Policy- Report-Only HTTP headers HTML meta element In a nutshell Policy default-src 'none'; script-src 'nonce-Nc3n83cnSAd' static.example.com HTML <!doctype html><html><head> <meta charset="utf-8"> <script src="//static.example.com/jquery.js"></script> <script nonce="Nc3n83cnSAd"></script> <script src="//evil.net/evil.js"></script> unsafe-inline and unsafe-eval unsafe-inline Inline scripts and styles onclick="..." javascrtipt: unsafe-eval eval() new Function setTimeout , setInterval with string as a first argument Other directives style-src - CSS styles media-src – audio and video object-src - plugin objects (e.g. Flash) frame-src – iframe sources font-src – font files connect-src - XMLHttpRequest, WebSocket When CSP protects against XSS In order to protect against XSS, web application authors SHOULD include: both the script-src and object-src directives, or include a default-src directive, which covers both scripts and plugins. In either case, authors SHOULD NOT include either 'unsafe-inline' or data: as valid sources in their policies. Both enable XSS attacks by allowing code to be included directly in the document itself; they are best avoided completely. -
Guideline for Securing Your Web Browser P a G E | 2
CMSGu2011-02 CERT-MU SECURITY GUIDELINE 2011 - 02 Mauritian Computer Emergency Response Team Enhancing Cyber Security in Mauritius Guideline For Securing Your Web Browser National Computer Board Mauritius JuJunene 2011 2011 Version 1.7 IssueIssue No. No. 4 2 National Computer Board © Table of Contents 1.0 Introduction .......................................................................................................................... 7 1.1 Purpose and Scope ........................................................................................................... 7 1.2 Audience........................................................................................................................... 7 1.3 Document Structure.......................................................................................................... 7 2.0 Background .......................................................................................................................... 8 3.0 Types of Web Browsers ....................................................................................................... 9 3.1 Microsoft Internet Explorer .............................................................................................. 9 3.2 Mozilla Firefox ................................................................................................................. 9 3.3 Safari ................................................................................................................................ 9 3.4 Chrome .......................................................................................................................... -
Browser Security
Transcript of Episode #38 Browser Security Description: Steve and Leo discuss the broad topic of web browser security. They examine the implications of running "client-side" code in the form of interpreted scripting languages such as Java, JavaScript, and VBScript, and also the native object code contained within browser "plug- ins" including Microsoft’s ActiveX. Steve outlines the "zone-based" security model used by IE and explains how he surfs with high security under IE, only "lowering his shields" to a website after he’s had the chance to look around and decide that the site is trustworthy. High quality (64 kbps) mp3 audio file URL: http://media.GRC.com/sn/SN-038.mp3 Quarter size (16 kbps) mp3 audio file URL: http://media.GRC.com/sn/sn-038-lq.mp3 Leo Laporte: Bandwidth for Security Now! is provided by AOL Radio at AOL.com/podcasting. This is Security Now! with Steve Gibson, Episode 38 for May 4, 2006: Browser Security. Security Now! is brought to you by Astaro, makers of the Astaro Security Gateway, on the web at www.astaro.com. So finally the sun is shining in beautiful California. We have summer, or at least spring finally arrived. And, look, Steve Gibson’s wearing a tank top and shorts. No, he’s not. Steve Gibson: Well, it’s dry in Toronto, Leo. You were all chapped; I was all, like, chapped just after one day. Leo: I am. And, you know, they complain in Toronto that it’s too humid because they have the lake effect. But I guess it gets humid some other time because I – chapped is the word, exactly. -
New Standards and Upcoming Technologies in Browser Security
OWASP The OWASP Foundation AppSec Europe 2011 http://www.owasp.org New Standards and upcoming Technologies in Browser Security Tobias Gondrom Board member of OWASP London Chair of IETF Web Security WG [email protected] Copyright © The OWASP Foundation Permission is granted to copy, distribute and/or modify this document under the terms of the OWASP License. Tobias Gondrom • 12 years information security experience • 10 years application development experience • Information Security & Risk Management, Research and Advisory, Director • Author of Standards on Digital Signatures and Secure Archiving • Chair of IETF Web Security Working Group http://datatracker.ietf.org/wg/websec/charter/ Member of the IETF Security Directorate • London OWASP chapter board member (former OWASP Germany chapter lead) www.owasp.org Browser Security • History • What’s the problem • Who & Why • What’s been done • When 3 Browser Security • History • What’s the problem • Who & Why • What’s been done • When 4 History • Internet/Arpanet Protocols were designed for robustness and exchanging information and cross reference of content… …. but not with security and active content in mind • We try to fix Application Security on the Application end ever since 5 Browser Security • History • What’s the problem • Who & Why • What’s been done • When 6 What’s the problem - OWASP Top 10 What’s the problem - OWASP Top 10 What’s the problem - No Clear separation between content and executed code - Relies on trust relationships (trust on first use / trusted source) - Weak channel protection - Authentication & leakage of credentials => Today, Web Applications try to fix this on the Application level with little support of the underlying infrastructure 9 What’s the problem Client Server Inform & Influence Security Posture 10 Think Big - What if we can…. -
Browser Security Guidance: Mozilla Firefox
GOV.UK Guidance Browser Security Guidance: Mozilla Firefox Published Contents 1. Usage scenario 2. Summary of browser security 3. How the browser can best satisfy the security recommendations 4. Network architecture 5. Deployment process 6. Recommended configuration 7. Enterprise considerations This ALPHA guidance builds on the End User Devices Platform Security Guidance and is applicable to devices running Mozilla Firefox on a supported and well configured version of Windows. This guidance was tested on 64bit Windows 8.1 Enterprise edition running Firefox 31.1.1 ESR. 1. Usage scenario Firefox will be used to access a variety of web services including: accessing intranet services hosted on an enterpriseprovided OFFICIAL network accessing enterprise cloud services sourced from the Digital Marketplace accessing other Internet services and web resources To support these scenarios, the following architectural choices are recommended: All data should be routed through a secure enterprise VPN to ensure the confidentiality and integrity of traffic intended for the enterprise intranet All Internet data should be routed through an enterprisehosted proxy to benefit from enterprise protective monitoring and logging solutions Arbitrary thirdparty extension installation by users is not permitted in the browser. A list of allowed trusted apps and extensions can be configured in Group Policy 2. Summary of browser security This browser has been assessed against each of the 12 security recommendations, and that assessment is shown in the table below. Explanatory text indicates that there is something related to that recommendation that the risk owners should be aware of. Rows marked [!] represent a more significant risk. -
Browser Security Issues and Solutions
Browser security issues and solutions HORNYÁK ZSOLT A BIZTONSÁGOS ELEKTRONIKUS KERESKEDELEM ALAPJAI (BMEVIHIM219) Outline • Why Are Browsers Attack Targets? • Security in Google Chrome • Security in Chromium • Malicious Extensions • Cookie stealing • Vulnerabilities Resulting From the Use of HTML and JavaScript • Vulnerabilities in SSL/TLS • ZIP Bombs, XML Bombs, XML eXternal Entities Why Are Browsers Attack Targets? The web browser is our window to the world. We use it every day for tasks including: • Mail • Shopping • Social Networking • Finance Management • Business The browser has access to personal information as plaintext, so it’s inevitable that it gets attacked. Security in Google Chrome Try to minimize the damage • Every sufficiently big software contains bugs • Mozilla Firefox’s source code has approximately 3.7 million lines • Let’s try to minimize the… • Severity of vulnerabilities • Window of vulnerabilities • Frequency of exposure Reducing the severity of vulnerabilities • Web content is run within a JavaScript Virtual Machine, to protect the web sites from each other • Exploit mitigation • ASLR (Address Space Layout Randomization) • Randomizing the mapping location of key system components • DEP (Data Execution Prevention) • Marking memory pages as non-executable • SafeSEH (Safe exception handlers) • Heap Corruption Detection • Stack Overrun Detection using canaries • Using an OS-level sandbox Chrome’s architecture Charles Reis, Google; Adam Barth, UC Berkeley ; Carlos Pizano, Google: Browser Security: Lessons from Google -
Open Source Software As Intangible Capital: Measuring the Cost and Impact of Free Digital Tools Preliminary Draft October 31, 20181 Carol A
Open Source Software as Intangible Capital: Measuring the Cost and Impact of Free Digital Tools Preliminary Draft October 31, 20181 Carol A. Robbins*(1), Gizem Korkmaz (2), José Bayoán Santiago Calderón (3), Daniel Chen (2), Claire Kelling (4) , Stephanie Shipp (2), Sallie Keller (2) Abstract Open source software is everywhere, both as specialized applications nurtured by devoted user communities, and as digital infrastructure underlying platforms used by millions daily, yet its value and impact are not currently measured (with small exceptions). We develop an approach to document the scope and impact of open source software created by all sectors of the economy: businesses, universities, government research institutions, nonprofits, and individuals. We use a bottom-up approach to measure subset of OSS projects and languages, collecting data on open source software languages R, Python, Julia, and JavaScript, as well as from the Federal Government’s code.gov website. Using lines of code and a standard model to estimate package developer time, we convert lines of code to resource cost. We estimate that the resource cost for developing R, Python, Julia, and JavaScript exceeds $3 billion dollars, based on 2017 costs. Applying this approach to open source software available on code.gov results in an estimated value of more than $1 billion, based on 2017 costs, as a lower bound for the resource cost of this software. We analyze the dependencies between software packages through network analysis and estimate re-use statistics. This reuse is one measure of relative impact. Key words: Open Source Software, Intangibles, Network Analysis National Center for Science and Engineering Statistics, National Science Foundation; 2) Social & Decision Analytics Division, Biocomplexity Institute & Initiative, University of Virginia; 3) Claremont Graduate University; 4) Pennsylvania State University 1 An earlier version of this paper was presented August 21, 2018 at the International Association for Research on Income and Wealth. -
Content Security Policy (CSP) - HTTP | MDN
10/15/2020 Content Security Policy (CSP) - HTTP | MDN Sign in English ▼ Content Security Policy (CSP) Content Security Policy (CSP) is an added layer of security that helps to detect and mitigate certain types of attacks, including Cross Site Scripting (XSS) and data injection attacks. These attacks are used for everything from data theft to site defacement to distribution of malware. CSP is designed to be fully backward compatible (except CSP version 2 where there are some explicitly-mentioned inconsistencies in backward compatibility; more details here section 1.1). Browsers that don't support it still work with servers that implement it, and vice-versa: browsers that don't support CSP simply ignore it, functioning as usual, defaulting to the standard same- origin policy for web content. If the site doesn't offer the CSP header, browsers likewise use the standard same-origin policy. To enable CSP, you need to configure your web server to return the Content-Security- Policy HTTP header. (Sometimes you may see mentions of the X-Content-Security- Policy header, but that's an older version and you don't need to specify it anymore.) Alternatively, the <meta> element can be used to configure a policy, for example: <meta http-equiv="Content-Security-Policy" content="default-src 'self'; img- src https://*; child-src 'none';"> Threats Mitigating cross site scripting A primary goal of CSP is to mitigate and report XSS attacks. XSS attacks exploit the browser's trust of the content received from the server. Malicious scripts are executed by the victim's browser because the browser trusts the source of the content, even when it's not coming from where it seems to be coming from.