csrf

tp5.1 csrf 验证

泪湿孤枕 提交于 2019-11-30 01:33:09
说白了,就是加一个隐藏域 加隐藏域不是手动加的,是tp5.1 加的 发令牌 验证令牌,自动验证: 来源: CSDN 作者: 爱生活,爱编程 链接: https://blog.csdn.net/qq_15009739/article/details/103246291

CSRF

半城伤御伤魂 提交于 2019-11-30 01:01:27
CSRF 概述 cross-site request forgery CSRF攻击场景中攻击者伪造一个请求,然后切片目标用户进行点击,用户一旦点击,攻击就完成了。 判断一个网站是否存在CSRF漏洞,就是判断其对关键信息的操作(增删改)是否容易伪造。 利用的场景被攻击者必须要本身处于登录的状态,因为攻击者只是容易伪造请求但并不能知道密码cookie一些东西。 如何确认 对目标网站增删改的地方进行标记,并观察其逻辑,判断请求是否可以伪造,如对于敏感信息的修改并没有使用安全的token验证,导致请求容易被伪造。 确认凭证的有效期(会提高CSRF被利用的概率),如虽然推出或者关闭了浏览器,但cookie仍然有效,或者session并没有及时国企,导致CSRF攻击成功率变高-攻击者不必处于登陆状态。 利用 GET型的只要被攻击者点击,并且处于登录状态就可以。 POST型和XSS post类型用法一样需要第三方站点做好表单。 Token 每次关键动作请求后台都会生成Token,在session中保存,每次提交都会带上token在后端验证会话是连贯和实时的,保证请求不是伪造的。 验证token,每次刷新页面重置token 防护 郑家token验证(常用的做法): 对关键操作增加token参数,token必须随机,每次都不一样。 安全的会话管理(避免会话被利用) 会话及时销毁,登录超时操作。

AJAX

落花浮王杯 提交于 2019-11-29 23:38:39
AJAX 原文链接: https://www.cnblogs.com/liwenzhou/p/8718861.html AJAX准备知识:JSON 什么是 JSON ? JSON 指的是 JavaScript 对象表示法(JavaScript Object Notation) JSON 是轻量级的文本数据交换格式 JSON 独立于语言 * JSON 具有自我描述性,更易理解 * JSON 使用 JavaScript 语法来描述数据对象,但是 JSON 仍然独立于语言和平台。JSON 解析器和 JSON 库支持许多不同的编程语言。 啥都别多说了,上图吧! 合格的json对象: ["one", "two", "three"] { "one": 1, "two": 2, "three": 3 } {"names": ["张三", "李四"] } [ { "name": "张三"}, {"name": "李四"} ]  不合格的json对象: { name: "张三", 'age': 32 } // 属性名必须使用双引号 [32, 64, 128, 0xFFF] // 不能使用十六进制值 { "name": "张三", "age": undefined } // 不能使用undefined { "name": "张三", "birthday": new Date('Fri, 26 Aug

How to protect against CSRF by default in ASP.NET MVC 4?

只愿长相守 提交于 2019-11-29 20:50:53
Is there a way to ensure ASP.NET MVC 4 forms are protected against CSRF by default? For instance, is there a way to have AntiForgeryToken automatically applied to all forms in both views and controller actions? Background on this question: Prevent Cross-Site Request Forgery (CSRF) using ASP.NET MVC’s AntiForgeryToken() helper and Anatomy of a Cross-site Request Forgery Attack . To add to osoviejo's excellent answer, the instructions below, from my recent blog post on CSRF , put his work together with the information in Phil's blog in one comprehensive answer. ASP.NET/MVC provides a mechanism

How to implement CSRF protection in Ajax calls using express.js (looking for complete example)?

元气小坏坏 提交于 2019-11-29 19:39:20
I am trying to implement CSRF protection in an app built using node.js using the express.js framework. The app makes abundant use of Ajax post calls to the server. I understand that the connect framework provides CSRF middleware, but I am not sure how to implement it in the scope of client-side Ajax post requests. There are bits and pieces about this in other Questions posted here in stackoverflow, but I have yet to find a reasonably complete example of how to implement it from both the client and server sides. Does anyone have a working example they care to share on how to implement this?

Cross-Site Request Forgery (CSRF)

孤者浪人 提交于 2019-11-29 19:13:53
https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF) Overview Cross-Site Request Forgery (CSRF) is an attack that forces an end user to execute unwanted actions on a web application in which they're currently authenticated . CSRF attacks specifically target state-changing requests, not theft窃取 of data, since the attacker has no way to see the response to the forged伪造的 request. With a little help of social engineering (such as sending a link via email or chat), an attacker may trick the users of a web application into executing actions of the attacker's choosing. If the victim is a

转:CSRF攻击与防御

谁说胖子不能爱 提交于 2019-11-29 18:27:33
引子: CSRF攻击与防御 CSRF概念:CSRF跨站点请求伪造(Cross—Site Request Forgery),跟XSS攻击一样,存在巨大的危害性,你可以这样来理解: 攻击者盗用了你的身份,以你的名义发送恶意请求,对服务器来说这个请求是完全合法的,但是却完成了攻击者所期望的一个操作,比如以你的名义发送邮件、发消息,盗取你的账号,添加系统管理员,甚至于购买商品、虚拟货币转账等。 如下:其中Web A为存在CSRF漏洞的网站,Web B为攻击者构建的恶意网站,User C为Web A网站的合法用户。 CSRF攻击攻击原理及过程如下: 1. 用户C打开浏览器,访问受信任网站A,输入用户名和密码请求登录网站A; 2.在用户信息通过验证后,网站A产生Cookie信息并返回给浏览器,此时用户登录网站A成功,可以正常发送请求到网站A; 3. 用户未退出网站A之前,在同一浏览器中,打开一个TAB页访问网站B; 4. 网站B接收到用户请求后,返回一些攻击性代码,并发出一个请求要求访问第三方站点A; 5. 浏览器在接收到这些攻击性代码后,根据网站B的请求,在用户不知情的情况下携带Cookie信息,向网站A发出请求。网站A并不知道该请求其实是由B发起的,所以会根据用户C的Cookie信息以C的权限处理该请求,导致来自网站B的恶意代码被执行。 CSRF攻击实例 受害者 Bob 在银行有一笔存款

CSRF tokens vs Nonce confusion - are they the same?

旧时模样 提交于 2019-11-29 17:47:56
问题 In a attempt to make the current application I'm developing more secure, I've been reading about CSRF tokens and also Nonce. My question simply is, Are CSRF tokens and Nonce the same thing? from what I could gather so far is that both these methods have different techniques to accomplish the same goal, or am I misunderstanding something? If they are different, could you be nice enough to provide some example code or point me to some links where i can learn more about how to implementing

CSRF validation needed or not when using RESTful API?

[亡魂溺海] 提交于 2019-11-29 16:47:46
The following is written on the of the page of FOSRestBundle: "CSRF validation When building a single application that should handle forms both via HTML forms as well as via a REST API, one runs into a problem with CSRF token validation. In most cases it is necessary to enable them for HTML forms, but it makes no sense to use them for a REST API. For this reason there is a form extension to disable CSRF validation for users with a specific role. This of course requires that REST API users authenticate themselves and get a special role assigned." https://github.com/FriendsOfSymfony

Express.js csrf token with jQuery Ajax

可紊 提交于 2019-11-29 15:42:13
I am trying to implement csrf protection into my project but I can't make it work with jQuery Ajax. (It works with normal posts requests, though) If I tamper the token using chrome dev tools before I send the form, I still see "data is being processed" text rather than invalid csrf token error. app.js var express = require('express'); var path = require('path'); var favicon = require('serve-favicon'); var logger = require('morgan'); var cookieParser = require('cookie-parser'); var csrf = require('csurf'); var bodyParser = require('body-parser'); var router = express.Router(); var app = express