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CVE-2021-32622

File upload local preview can run embedded scripts after user interaction

Published: May 17, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-74
NVD MITRE
4.2CVSSMEDIUM
EPSS Score
0.4%
Top 71.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Matrix-React-SDK is a react-based SDK for inserting a Matrix chat/voip client into a web page. Before version 3.21.0, when uploading a file, the local file preview can lead to execution of scripts embedded in the uploaded file. This can only occur after several user interactions to open the preview in a separate tab. This only impacts the local user while in the process of uploading. It cannot be exploited remotely or by other users. This vulnerability is patched in version 3.21.0.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:RS:UC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-74CWE-434

Affected Products

matrix-react-sdkmatrix-react-sdk project
Mixed
Communications / messaging-chat
matrix-react-sdkmatrix-org
Mixed
Communications / messaging-chat
matrix-react-sdknpmOSS Libraries
matrix-react-sdk projectoss-projectCommunicationsaka matrix-react-sdk
matrix-orgoss-projectDECommunicationsaka synapse, matrix-js-sdk, matrix appservice irc
npmpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

4 techniques
Command and Control
Execution
Initial Access
Persistence
View detailed technique mapping

References

https://github.com/matrix-org/matrix-react-sdk/pull/5981
github.com
https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-8796-gc9j-63rv
github.com
https://nvd.nist.gov/vuln/detail/CVE-2021-32622
nvd.nist.gov
and 1 more references View all →

Timeline

Published
May 17, 2021
Last Updated
Nov 21, 2024

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