owasp top10

1Test Environment Introductionthe test environment is DVWA Modules in the OWASP environment2Test Instructionsbecause the file Upload function implementation code does not strictly restrict the user's uploaded file suffix and file type, which allows an attacker to Web Access directory to upload arbitrary php files, and the ability to pass these files to the PHP interpreter, you can execute arbitrary php script on the remote server3Test Stepsupload a ph

The Crosssite Scripting (cross-site scripting attack) in the OWASP Top 10 security threat allows an attacker to inject malicious script into the Web site through a browser. This vulnerability often occurs in Web applications where user input is required, and if the site has an XSS vulnerability, an attacker could send a malicious script to the user browsing the site, and can also exploit the vulnerability to steal SessionID, which is used to hijack th

request will be considered a real request. This can be done through URLs, image loading, XMLHttpRequest, and so on, and can result in data exposure or unexpected code execution. If the user is currently logged on to the victim's site, the request will automatically use the user's credentials (including session cookies, IP addresses, and other browser authentication methods). By using this method, an attacker could forge the identity of the victim and commit the action in its capacity Revis

PS: I was twice doing this experiment, the second experiment when the computer out a little problem stalled ... originally, There is a picture of the results of the blog did not save the diagram ... WebGoat Webgoat is a flawed Java EE Web application maintained by the famous owasp, which is not a bug in the program, but is deliberately designed to teach Web application security Courses. This application provides a realistic teaching environme

/naxsi-tutorial-1/Defense MechanismNaxsi's main protection mechanism is to implement threat blocking through a built-in set of extremely strict core rules, and to prevent normal requests from being killed by a user-defined whitelist (white list), through continuous optimization of both sides, To achieve a balance between security protection and business access.modsecurity Module Module IntroductionIn favor of filtering and blocking web dangers, the strong rule is that

tutorials on the Internet to explain how to use PHP to add a fancy feature to development applications, but most of them do not cover how to ensure the security of these features, this prevents applications from being vulnerable to attacks. Therefore, PHP applications with rich functions are generally not developed in a secure way. Train your developers to write code with secure thinking, which is more important than the choice of language. CERT (Computer Emergency Response Team, Computer Emerg

trusted website page, and the user's account theft often leads to significant losses, so it is also a huge hazard.3. Cross-site request forgeryCross-site Request forgery (Cross-siterequest forgery,csrf), as the owasp organization of the 2007 proposed ten security breaches of the five, it is also a derivative of XSS attacks. The so-called cross-site request forgery is the way an attacker injects a script using XSS injection attacks, and when the victi

Elmah handler in the admin path, because if you do not do so, even if the limit of admin/elmah.axd, that people can also from the/foo/ Elmah.axd in any directory like this, because you are only configuring Elmah.axd.Inspection ToolsThe author of the original article developed a website http://asafaweb.com/ to help ASP. NET developers to detect the security of the site, you only need to enter the Internet can access the address of the website can help you detect, such as:If your site has a probl

, junior will be able to master owasp Top 10, know what is the cross-site of the foot, what is csrf, what is WebView, I'm certainly not going to write this article here right now, but maybe it's not in the company. Or, in the year that the seniors were not wasted, there was a difference between finding a job, writing an essay, and continuing to improve on the technical side. "If" is a false assumption that there is no way to say that something has hap

The Crosssite Scripting (cross-site scripting attack) in the OWASP Top 10 security threat allows an attacker to inject malicious script into the Web site through a browser. This vulnerability often occurs in Web applications where user input is required, and if the site has an XSS vulnerability, an attacker could send a malicious script to the user browsing the site, and can also exploit the vulnerability to steal SessionID, which is used to hijack th

The document did last year, supposedly should be updated, not well written, some did not write the whole, referring to a lot of documents. Say Owasp Codereview, also should out 2.0. The cows were passing by, giving some advice. Directory 1. Overview 3 2. Input verification and output display 3 2.1 Command Injection 42.2 Cross-Site Scripting 42.3 file contains 52.4 Code Injection 52.5 SQL Injection 62.6 XPath Injection 62.7 HTTP response Split 6

PHP website ?? Helpful Web sites related to PHPPHP the right-direction: A quick reference guide to PHP PracticeBest Practice Guide for PHP practices:phpPHP Weekly: A php NewsweekPHP security:php Security GuidancePHP fig:php Framework Interaction GroupPHP UG: A website that helps people locate the most recent PHP user groupSeven PHP: A website that interviews PHP community usersNomad php: Online PHP Learning ResourcesPHP Mentoring: Point-to-point PHP guidance Organization Other websites ?? Use

Recently, the project was launched. A third-party company was invited to perform a penetration test and multiple XSS attacks were detected. Because we have used URLFilter to filter special characters for URL Get requests, the Get request vulnerability has been blocked. However, for Post requests, considering the existence of form submission in our project, rich text editing and other functions, dare not rashly use Filter to Filter keywords.To solve the above problem, we adopted AntiSamy, an open

This topic is the content we shared in the OWASP Hangzhou region security salon at the end of 2013. Here we resummarized the overall content of this topic and formed a text version. In this article, the case and response experience of DDoS come from the actual scenarios of a customer service system with a high market share, we analyze the costs, efficiency, and specific architecture design (selection, configuration, and optimization) to cope with diff

How to Prevent SQL Injection in PHP applications SQL injection is a technology used to control database queries, which often results in loss of confidentiality. In some cases SELECT' Attackers can take down the server, and code injection (including SQL, LDAP, operating system commands, and XPath injection technology) remains in the top 10 of OWASP vulnerabilities for many years. More people share their knowledge about application security. Unfortuna

believing that their applications will not be attacked or that they will not make mistakes. These ideas will lead to security issues. Developers should always imagine that their programs will be attacked and they will also make security mistakes. This idea helps developers avoid or reduce security risks and avoid losses to the company. Everyone will make mistakes. If the developer finds the problem before the hacker finds the vulnerability, the problem is not big. When developers and Software t

1Test Environment Introduction1. Use burpsuit tools for brute force2, the test environment for the DVWA module in the OWASP environment2Test Steps2.1Set Browser proxyRun First Burpsuit Tool, set the listening address and port, then set the proxy IP and address in the browser . such as:650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/8A/DC/wKiom1g9V9vRzWDoAABOVmV3FQw454.png "style=" float: none; "title=" 1.png "alt=" Wkiom1g9v9vrzwdoaabovmv3f

little difficult to take the initiative to test the csrf vulnerability. The OWASP tool named csrftester above is better to give it a try [6] 0x07 defense csrf WAF defends against csrf vulnerabilities in Web application tokens. Generally, Referer, Token, or verification code are used. The Nexus article [7] has been fully written; superhei also proposed the bypass idea [8]. Please refer to their article.Another idea is to defend against the client, whi

idea, I wrote a similar flash program [5], and then I tried it with Baidu, visit the web page with the following HTML: Here, we should not only send requests. In fact, flash can get the returned content. If the returned content has sensitive information, it can be read and sent to the controlled Web. Of course, it depends on whether the target site allows flash to retrieve content across domains. 6. CSRF Detection The CSRF vulnerability is detected by physical activity. capture a normal request

in plain text. 1.6 set reasonable limits for your website. Once the threshold value is exceeded, the service will automatically stop. (This is also related to website security .) 1.7 know how to implement progressive enhancement of web pages (progressive enhancement ). 1.8 After a POST request is sent, the user always redirects it to another webpage. 1.9 Do not forget the accessibility of the website (accessibility, that is, how the disabled use the website ). For us websites, this is sometimes