CVE-2021-32797 : JupyterLab is a user interface for Project Jupyter which will eventually replace

JupyterLab is a user interface for Project Jupyter which will eventually replace the classic Jupyter Notebook. In affected versions untrusted notebook can execute code on load. In particular JupyterLab doesn’t sanitize the action attribute of html `<form>`. Using this it is possible to trigger the form validation outside of the form itself. This is a remote code execution, but requires user action to open a notebook.

Published 2021-08-09 21:15:08

Updated 2022-04-07 18:40:59

Source GitHub, Inc.

View at NVD, CVE.org

Vulnerability category: Cross site scripting (XSS)Execute code

Products affected by CVE-2021-32797

Jupyter » Jupyterlab
Versions from including (>=) 2.3.0 and before (<) 2.3.2
cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:*:*:*
Matching versions
Jupyter » Jupyterlab
Versions from including (>=) 2.0.0 and before (<) 2.2.10
cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:*:*:*
Matching versions
Jupyter » Jupyterlab
Versions from including (>=) 3.1.0 and before (<) 3.1.4
cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:*:*:*
Matching versions
Jupyter » Jupyterlab
Versions before (<) 1.2.21
cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:*:*:*
Matching versions
Jupyter » Jupyterlab
Versions from including (>=) 3.0.0 and before (<) 3.0.17
cpe:2.3:a:jupyter:jupyterlab:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-32797

EPSS FAQ

0.48%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 62 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-32797

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.6	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H	2.8	6.0	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: High Integrity: High Availability: High
7.4	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N	2.8	4.0	GitHub, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2021-32797

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)

References for CVE-2021-32797

https://github.com/jupyterlab/jupyterlab/security/advisories/GHSA-4952-p58q-6crx

JupyterLab: XSS due to lack of sanitization of the action attribute of an HTML form · Advisory · jupyterlab/jupyterlab · GitHub
Third Party Advisory
https://github.com/jupyterlab/jupyterlab/commit/504825938c0abfa2fb8ff8d529308830a5ae42ed

Merge pull request from GHSA-4952-p58q-6crx · jupyterlab/jupyterlab@5048259 · GitHub
Exploit;Third Party Advisory

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Vulnerability Details : CVE-2021-32797

Products affected by CVE-2021-32797

Exploit prediction scoring system (EPSS) score for CVE-2021-32797

CVSS scores for CVE-2021-32797

CWE ids for CVE-2021-32797

References for CVE-2021-32797