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Clipboard-based XSS

High severity GitHub Reviewed Published Sep 21, 2021 in jsuites/jsuites • Updated Feb 1, 2023

Package

npm jsuites (npm)

Affected versions

< 4.9.11

Patched versions

4.9.11

Description

Impact

XSS against the user.

Details

jsuites is vulnerable to DOM based XSS if the user can be tricked into copying anything from a malicious and pasting it into the html editor. This is because a part of the clipboard content is directly written to innerHTML causing XSS.

References

The Curious Case of Copy & Paste – on risks of pasting arbitrary content in browsers: https://research.securitum.com/the-curious-case-of-copy-paste/

References

@hodeware hodeware published to jsuites/jsuites Sep 21, 2021
Published by the National Vulnerability Database Sep 21, 2021
Reviewed Sep 21, 2021
Published to the GitHub Advisory Database Sep 22, 2021
Last updated Feb 1, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS score

0.086%
(38th percentile)

Weaknesses

CVE ID

CVE-2021-41086

GHSA ID

GHSA-qh7x-j4v8-qw5w

Source code

Credits

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