RCE in Jupyterhub Nbgitpuller
CVE-2021-39160
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Jupyterhub Nbgitpuller — versions >= 0.9.0, < 0.10.2
Weakness classification (CWE)
References
- github.com/jupyterhub/nbgitpuller/security/advisories/GHSA-mq5p-2mcr-m52j (Third Party Advisory)
- github.com/jupyterhub/nbgitpuller/commit/07690644f29a566011dd0d7ba14cae3eb04904… (Patch, Third Party Advisory)
- github.com/jupyterhub/nbgitpuller/blob/main/CHANGELOG.md (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2021-39160?
- CVE-2021-39160 is a critical-severity vulnerability in Jupyterhub Nbgitpuller, classified under Code Injection. CVSS score: 9.6/10. Published 2021-08-25.
- How severe is CVE-2021-39160?
- Critical severity. CVSS v3 base score is 9.6 out of 10.