CVE-2023-32309— PyMdown Extensions 路径遍历漏洞
一分钟漏洞结论
影响对象
facelessuser pymdown-extensions
利用判断
存在公开或 AI PoC，应优先验证
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
PyMdown Extensions是Python Markdown 的扩展集合。 PyMdown Extensions存在路径遍历漏洞，该漏洞源于容易受到目录遍历攻击的影响，攻击者利用该漏洞可能会读取任意文件。
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一、 漏洞 CVE-2023-32309 基础信息
漏洞信息
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Vulnerability Title
Arbitrary file inclusion with the pymdowm-snippets extension
来源: CVE Program / CVE List V5
Vulnerability Description
PyMdown Extensions is a set of extensions for the `Python-Markdown` markdown project. In affected versions an arbitrary file read is possible when using include file syntax. By using the syntax `--8<--"/etc/passwd"` or `--8<--"/proc/self/environ"` the content of these files will be rendered in the generated documentation. Additionally, a path relative to a specified, allowed base path can also be used to render the content of a file outside the specified base paths: `--8<-- "../../../../etc/passwd"`. Within the Snippets extension, there exists a `base_path` option but the implementation is vulnerable to Directory Traversal. The vulnerable section exists in `get_snippet_path(self, path)` lines 155 to 174 in snippets.py. Any readable file on the host where the plugin is executing may have its content exposed. This can impact any use of Snippets that exposes the use of Snippets to external users. It is never recommended to use Snippets to process user-facing, dynamic content. It is designed to process known content on the backend under the control of the host, but if someone were to accidentally enable it for user-facing content, undesired information could be exposed. This issue has been addressed in version 10.0. Users are advised to upgrade. Users unable to upgrade may restrict relative paths by filtering input.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
来源: CVE Program / CVE List V5
Vulnerability Title
PyMdown Extensions 路径遍历漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
PyMdown Extensions是Python Markdown 的扩展集合。 PyMdown Extensions存在路径遍历漏洞，该漏洞源于容易受到目录遍历攻击的影响，攻击者利用该漏洞可能会读取任意文件。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| facelessuser | pymdown-extensions | >= 1.5, < 10.0 | - |
|
二、漏洞 CVE-2023-32309 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | Example project illustrating CVE-2023-32309 vulnerability | https://github.com/itlabbet/CVE-2023-32309 | POC详情 |
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