Vulnerability · Published Aug 25, 2021 · Assigned by GitHub_M

CVE-2021-39160Code injection in nbgitpuller

Critical 9.6

In plain English

A critical-severity code injection in nbgitpuller from jupyterhub. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.6Critical

Exploit odds (30 days)1.7%top 22.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	nbgitpuller	0.10.2	GHSA-mq5p-2mcr-m52j
PyPI	nbgitpuller	0.10.2	PYSEC-2021-315

Affected products (as reported)

Vendor	Product	Versions
jupyterhub	nbgitpuller	>= 0.9.0, < 0.10.2

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References

https://github.com/jupyterhub/nbgitpuller/security/advisories/GHSA-mq5p-2mcr-m52j x_refsource_CONFIRM
https://github.com/jupyterhub/nbgitpuller/commit/07690644f29a566011dd0d7ba14cae3eb0490481 x_refsource_MISC
https://github.com/jupyterhub/nbgitpuller/blob/main/CHANGELOG.md#0102---2021-08-25 x_refsource_MISC