CPS报告收集 - 前端监控
csp
全称: Content-Security-Policy 内容安全策略
是一种通过给浏览器加资源白名单的方式,进行站点保护的手段
可以有效的预防和阻止 类似XSS、运营商劫持之类的攻击
CSP报告
如果你的站点目前还不适合强制使用CSP拦截, 那么可以开启Content-Security-Policy-Report-Only
开启方法如下
在服务端响应时,加入 Content-Security-Policy-Report-Only的头部,
指定规则和report-uri
注: Content-security-policy 规则可以直接在meta头部标签指定, 但是report-uri属性不支持在meta设置
report-uri将接受到一个POST请求
参数JSON包含如下属性
document-uri:
发生违规的文档的URI。
referrer:
违规发生处的文档引用(地址)。
blocked-uri:
被CSP阻止的资源URI。如果被阻止的URI来自不同的源而非文档URI,那么被阻止的资源URI会被删减,仅保留协议,主机和端口号。
violated-directive:
违反的策略名称。
original-policy:
在 Content-Security-Policy
HTTP 头部中指明的原始策略。
使用
1. nodejs下
利用helmet-csp包
范例如下
var express = require('express'); const csp = require('helmet-csp') var app = express();app.use(csp({
// Specify directives as normal.
directives: {
defaultSrc: ["'self'", 'default.com'],
scriptSrc: ["'self'", "'unsafe-inline'"],
styleSrc: ['style.com'],
fontSrc: ["'self'", 'fonts.com'],
imgSrc: ['img.com', 'data:'],
reportUri: 'http://localhost:9999/api/track/csp-report/group/test',
objectSrc: ["'none'"],
},// This module will detect common mistakes in your directives and throw errors // if it finds any. To disable this, enable "loose mode". loose: false, // Set to true if you only want browsers to report errors, not block them. // You may also set this to a function(req, res) in order to decide dynamically // whether to use reportOnly mode, e.g., to allow for a dynamic kill switch. reportOnly: true, // Set to true if you want to blindly set all headers: Content-Security-Policy, // X-WebKit-CSP, and X-Content-Security-Policy. setAllHeaders: false, // Set to true if you want to disable CSP on Android where it can be buggy. disableAndroid: false, // Set to false if you want to completely disable any user-agent sniffing. // This may make the headers less compatible but it will be much faster. // This defaults to `true`. browserSniff: true
}))
app.get('/', function (req, res) {
res.send(<html> <head> <style> body{ color: red; } </style> </head> <body>this is a csp test</body> </html>
);
});app.listen(3000, function () {
console.log('Example app listening on port 3000!');
});
访问localhost:3000,会触发css拦截报告的消息
[Report Only] Refused to apply inline style because it violates the following Content Security Policy directive: "style-src style.com". Either the 'unsafe-inline' keyword, a hash ('sha256-47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU='), or a nonce ('nonce-...') is required to enable inline execution.
同时发送一条记录到report 服务
服务端需要设置bodyParser.json 支持 application/csp-report格式的数据
显示结果如下, 样式并不会被影响
2. pathon
def middleware(request, response): response['Content-Security-Policy-Report-Only'] = \ "default-src 'self'; " \ "report-uri http://locahost:9000/api/track/csp-report/group/test" return response
标题:CPS报告收集 - 前端监控
作者:hugh0524
地址:https://blog.uproject.cn/articles/2019/09/11/1568176109810.html
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