Skip to content

Remote code execution in Eclipse Theia

High severity GitHub Reviewed Published Sep 2, 2021 to the GitHub Advisory Database • Updated Jan 29, 2023

Package

npm @theia/mini-browser (npm)

Affected versions

>= 0.3.9, < 1.9.0

Patched versions

1.9.0

Description

In Eclipse Theia 0.3.9 to 1.8.1, the "mini-browser" extension allows a user to preview HTML files in an iframe inside the IDE. But with the way it is made it is possible for a previewed HTML file to trigger an RCE. This exploit only happens if a user previews a malicious file.

References

Published by the National Vulnerability Database Sep 1, 2021
Reviewed Sep 2, 2021
Published to the GitHub Advisory Database Sep 2, 2021
Last updated Jan 29, 2023

Severity

High
8.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2021-34435

GHSA ID

GHSA-v9w2-v7j9-rjpr

Source code

Checking history
See something to contribute? Suggest improvements for this vulnerability.