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CVE-2024-49766— Werkzeug safe_join not safe on Windows

Quick assessment

Affected
pallets werkzeug
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Werkzeug是Pallets开源的一个全面的 WSGI web 应用程序库。 Werkzeug 3.0.6之前版本存在路径遍历漏洞，该漏洞源于在Windows系统上且Python版本小于3.11时，os.path.isabs无法捕捉到UNC路径，导致Werkzeug的safe_join函数可能生成不安全的路径，从而潜在地允许非预期的数据访问。

AI Predicted 5.3 Difficulty: Easy EPSS 0.78% · P54

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2024-49766

Vulnerability Information
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Vulnerability Title
Werkzeug safe_join not safe on Windows
Source: CVE Program / CVE List V5
Vulnerability Description
Werkzeug is a Web Server Gateway Interface web application library. On Python < 3.11 on Windows, os.path.isabs() does not catch UNC paths like //server/share. Werkzeug's safe_join() relies on this check, and so can produce a path that is not safe, potentially allowing unintended access to data. Applications using Python >= 3.11, or not using Windows, are not vulnerable. Werkzeug version 3.0.6 contains a patch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Werkzeug 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Werkzeug是Pallets开源的一个全面的 WSGI web 应用程序库。 Werkzeug 3.0.6之前版本存在路径遍历漏洞，该漏洞源于在Windows系统上且Python版本小于3.11时，os.path.isabs无法捕捉到UNC路径，导致Werkzeug的safe_join函数可能生成不安全的路径，从而潜在地允许非预期的数据访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pallets werkzeug < 3.0.6 -

II. Public POCs for CVE-2024-49766

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III. Intelligence Information for CVE-2024-49766

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IV. Related Vulnerabilities

Same product: werkzeug
Same vendor: pallets
Same weakness: CWE-22

V. Comments for CVE-2024-49766

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