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CVE-2022-39215— The readDir Endpoint Scope can be Bypassed With Symbolic Links in Tauri

Quick assessment

Affected
tauri-apps tauri
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.

Tauri是Tauri开源的一个使用 Web 前端构建更小、更快、更安全的桌面应用程序。 Tauri 1.0.6之前版本存在后置链接漏洞，该漏洞源于递归调用readDir时缺少规范化，有可能在定义的fs范围之外显示目录列表。

CVSS 8.3 · High EPSS 1.00% · P61
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I. Basic Information for CVE-2022-39215

Vulnerability Information
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Vulnerability Title
The readDir Endpoint Scope can be Bypassed With Symbolic Links in Tauri
Source: CVE Program / CVE List V5
Vulnerability Description
Tauri is a framework for building binaries for all major desktop platforms. Due to missing canonicalization when `readDir` is called recursively, it was possible to display directory listings outside of the defined `fs` scope. This required a crafted symbolic link or junction folder inside an allowed path of the `fs` scope. No arbitrary file content could be leaked. The issue has been resolved in version 1.0.6 and the implementation now properly checks if the requested (sub) directory is a symbolic link outside of the defined `scope`. Users are advised to upgrade. Users unable to upgrade should disable the `readDir` endpoint in the `allowlist` inside the `tauri.conf.json`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
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
Tauri 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tauri是Tauri开源的一个使用 Web 前端构建更小、更快、更安全的桌面应用程序。 Tauri 1.0.6之前版本存在后置链接漏洞，该漏洞源于递归调用readDir时缺少规范化，有可能在定义的fs范围之外显示目录列表。
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
tauri-apps tauri < 1.0.6 -

II. Public POCs for CVE-2022-39215

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III. Intelligence Information for CVE-2022-39215

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Patches & Fixes for CVE-2022-39215 (2)

Vendor Advisories for CVE-2022-39215 (1)

Other References for CVE-2022-39215 (1)

IV. Related Vulnerabilities

Same product: tauri
Same vendor: tauri-apps
Same weakness: CWE-22

V. Comments for CVE-2022-39215

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