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CVE-2021-39160— Code injection in nbgitpuller

Quick assessment

Affected
jupyterhub nbgitpuller
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.

nbgitpuller是开源的一个Jupyter服务器扩展，用于同步一个git仓库到本地路径。 nbgitpuller 0.10.2之前版本存在操作系统命令注入漏洞，该漏洞源于对于用户的输入没有进行有效的验证和转义，用户访问攻击恶意制作的链接可能导致任意代码在用户环境中执行。

CVSS 9.6 · Critical EPSS 1.73% · P77

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-39160

Vulnerability Information
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Vulnerability Title
Code injection in nbgitpuller
Source: CVE Program / CVE List V5
Vulnerability Description
nbgitpuller is a Jupyter server extension to sync a git repository one-way to a local path. Due to unsanitized input, visiting maliciously crafted links could result in arbitrary code execution in the user environment. This has been resolved in version 0.10.2 and all users are advised to upgrade. No work around exist for users who can not upgrade.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
nbgitpuller 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
nbgitpuller是开源的一个Jupyter服务器扩展，用于同步一个git仓库到本地路径。 nbgitpuller 0.10.2之前版本存在操作系统命令注入漏洞，该漏洞源于对于用户的输入没有进行有效的验证和转义，用户访问攻击恶意制作的链接可能导致任意代码在用户环境中执行。
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
jupyterhub nbgitpuller >= 0.9.0, < 0.10.2 -

II. Public POCs for CVE-2021-39160

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III. Intelligence Information for CVE-2021-39160

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Patches & Fixes for CVE-2021-39160 (1)

Vendor Advisories for CVE-2021-39160 (1)

Other References for CVE-2021-39160 (1)

IV. Related Vulnerabilities

Same vendor: jupyterhub
Same weakness: CWE-94

V. Comments for CVE-2021-39160

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