CVE-2021-32798
In affected versions untrusted notebook can execute code on load.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Jupyter notebook is a web-based notebook environment for interactive computing. In affected versions untrusted notebook can execute code on load. Jupyter Notebook uses a deprecated version of Google Caja to sanitize user inputs. A public Caja bypass can be used to trigger an XSS when a victim opens a malicious ipynb document in Jupyter Notebook. The XSS allows an attacker to execute arbitrary code on the victim computer using Jupyter APIs.
- CVSS 3.1
- 9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 2.11% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- jupyter/notebook
- Source
- security-advisories@github.com
References
- https://github.com/jupyter/notebook/commit/79fc76e890a8ec42f73a3d009e44ef84c14ef0d5Exploit, Third Party Advisory
- https://github.com/jupyter/notebook/security/advisories/GHSA-hwvq-6gjx-j797Third Party Advisory
- https://github.com/jupyter/notebook/commit/79fc76e890a8ec42f73a3d009e44ef84c14ef0d5Exploit, Third Party Advisory
- https://github.com/jupyter/notebook/security/advisories/GHSA-hwvq-6gjx-j797Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.