protect against xss

Www.2cto.com: Old article. Xss has been on fire recently. Let's see it.These rules apply to all different types of XSS cross-site scripting attacks. You can perform proper decoding on the server to locate the ing XSS and stored XSS. Because XSS also has many special situatio

1) Common XSS JavaScript injection (2) IMG Tag XSS use JavaScript commands (3) IMG labels without semicolons and without quotation marks (4) the IMG label is case insensitive. (5) HTML encoding (a semicolon is required) (6) modify the defect IMG label "> (7) formCharCode tag (calculator) (8) Unicode encoding of UTF-8 (calculator) (9) Unicode encoding of 7-bit UTF-8 is not semicolon (calculator) (10) There

Source: External region of Alibaba Cloud On Sunday afternoon, it was raining heavily. I couldn't go out. I started Plurk and thought of the "XSS challenge" that was launched before Plurk. I only needed to find the vulnerability, if you confirm and return to your friends, you can use the Plurk hacker chapter. Before that, I quickly submitted html "> I crawled the demo and returned the demo. (You don't have to worry about it. Of course you didn't actual

Author: cosineFrom 0x37 Security It is interesting to have a challenge. In order to create a Search Engine XSS Worm, yeeyan is used here for an experiment. Yan. So I can only construct it like this: Http://www.yeeyan.com/main/ysearch? Q = % 3Cs % 63% 72ipt % 3 Eeval (% 53% 74ring. f % 72om % 43% 68ar % 43ode (100,111, 99,117,109,101,110,116, 46,119,114,105,116,101, 60,115, 99,114,105,112,116, 32,115,114, 104,116,116,112, 47,119,119,119, 99,111,109, 47

Getting Started with XSS attacksXSS represents the Cross site Scripting (span scripting attack), which is similar to a SQL injection attack where SQL statements are used as user input to query/modify/delete data, and in an XSS attack, by inserting a malicious script, Implement control of the user's browser.There are two types of XSS attacks: Non-persiste

The essence of XSS injection is: a Web page in accordance with user input, do not expect to generate the executable JS code, and JS has been the implementation of the browser. This means that the string that is sent to the browser contains an illegal JS code that is related to the user's input. Common XSS injection defenses can be addressed by simple Htmlspecialchars (escape HTML special characters), Strip

ASP.net developers should always adhere to the practice If you are reading this article, you may not need to instill in you the fact that security in the Web application is becoming more and more important. What you need may be some practical advice on how to implement security in an ASP.net application. The bad news is that there is no development platform-including ASP. NET-to ensure that once the platform is adopted, you will be able to write code that is hundred percent secure. If anyone sa

Bkjia.com expert article]This article is intended for those who do not take XSS as a serious Web application vulnerability. In fact, people can exploit the XSS vulnerability to make a profit. This article is published on websites that love hacking technology but never attack others. Therefore, I will not take any responsibility for the usage of the knowledge introduced here. I. Introduction Recently, I am v

I was surprised that Sina had to hire an XSS security engineer with a high salary, so I used the XSS vulnerability to test the account of Sina Weibo toutiao.com and launched a counterattack against XSS. Using XSS to get cookies can directly control Weibo. toutiao news is still important and published in major global n

At present, several websites that have Weibo are all quickly forwarded, and Netease has not detected it yet. This evening, I ran to perform a test on Netease Weibo. Three XSS are found.1. content storage-type XSS, the harm is not explained. Seeing Weibo is just a trick. Kill all browsers2. The storage-type XSS, IE, 6, 7, and 8 + modes of Weibo homepage are effect

Address reproduced in this article: http://www.2cto.com/Article/201209/156182.htmlAn XSS (Cross-site scripting) attack is an attacker who inserts malicious HTML tags or JavaScript code into a Web page, and when a user browses to the page or does something, the attacker takes advantage of the user's trust in the original site, Trick a user or browser into performing some unsafe action or submitting a user's private information to another website.For ex

Discuz X1.5 uses adding friends to store xss for worm Spread Discuz X1.5 stores xss at the place where friends are added. xss interacts with users to spread the worm index. Position: Add a friend Effect after x Triggered after clicking OK with the help of this storage xss, we conduct worm propagation, dz session coo

The cookie of the main site is protected by httponly.1. Find the XSS of the subdomain A. XX. COM. The xss filter can be used, but the server is ngnix.2. find another subdomain B. XX. COM's PHP global variable XSS. This server is an old apache version and can expose cookies by 400 Error. However, this XSS can only be ur

CnCxzSec's Blog Today, I saw an article Exploitation of "Self-Only" XSS in Google Code in exploit-db, which is about the "cross-Self XSS" on Google Code ". In the past, I found that some mainstream domestic mailboxes "only cross-user XSS" were found. After reporting, the official team thought it was harmless. I used to think that too. UnlessIn extreme casesFor ex

1. What is XSS? XSS attacks: XSS attacks are web application attacks. Attackers attempt to inject malicious script code to a trusted Website for malicious operations. In cross-site scripting attacks, malicious code is executed on the affected user's browser and affects the user. 2. What can XSS do? Many people think th

CMS will integrate online editors such as FCKEditor in the background for editing content, but this is very easy for XSS cross-site attacks. let's take a look at how HTMLPurifier can prevent xss cross-site attacks. with html visualization... CMS integrates online editors, such as FCKEditor, in the background to edit the content of the article. However, this is very easy for cross-site

XSS: Cross site script attack, which we mentioned earlier, refers to an attacker entering (passing in) malicious HTML code into a Web site with an XSS vulnerability, and this HTML code executes automatically when other users browse the site. So as to achieve the purpose of the attack. For example, theft of user cookies, destruction of page structure, redirection to other websites, etc. In theory, there is a

PHP and XSS cross-site attacks. In fact, this topic has been mentioned for a long time, and many PHP sites in China are found to have XSS vulnerabilities. I accidentally saw an XSS vulnerability in PHP5 today. here is a summary. By the way, PHP5 friends In fact, this topic has been mentioned for a long time, and many PHP sites in China are found to have

Technology sharing: How to Use File Upload to execute XSS? ExploitationFile UploadImplement XSS attacksIs a HackingThere are good opportunities for Web applications, especially in the case of ubiquitous upload of user portraits, which gives us many opportunities to discover developers' errors. Basic File Upload XSS attacks include.1) file name The file name itsel

Currently, thinkphp3.1.3 is used. It seems that this version of thinkphp filters url and form submission by default, because adding malicious js scripts to some search boxes and url parameters is not executed, but I still don't feel at ease. thinkphp does not take long for this framework, but xss should... currently, thinkphp3.1.3 is used. It seems that this version of thinkphp filters url and form submission by default, because adding malicious js sc