Vulnerability Details : CVE-2021-41038

In versions of the @theia/plugin-ext component of Eclipse Theia prior to 1.18.0, Webview contents can be hijacked via postMessage().

Published 2021-11-10 17:15:11

Updated 2021-11-13 03:57:07

Source Eclipse Foundation

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-41038

Probability of exploitation activity in the next 30 days: 0.06%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 26 % EPSS Score History EPSS FAQ

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:P/A:N	8.6	2.9	nvd@nist.gov
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	2.8	2.7	nvd@nist.gov
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: Low Integrity: Low Availability: None

CWE-940 Improper Verification of Source of a Communication Channel

The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin.

Assigned by: emo@eclipse.org (Secondary)

https://github.com/eclipse-theia/theia/pull/10125

webview: check message source frame by paul-marechal · Pull Request #10125 · eclipse-theia/theia · GitHub
Patch;Third Party Advisory
https://bugs.eclipse.org/bugs/show_bug.cgi?id=575924

575924 – (CVE-2021-41038) XSS in @theia/plugin-ext webview
Exploit;Issue Tracking;Third Party Advisory

Eclipse » Theia
Versions before (<) 1.18.0
cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:*
Matching versions