CVE-2021-34436

CVSS V2 High 7.5 CVSS V3 Critical 9.8

Description

In Eclipse Theia 0.1.1 to 0.2.0, it is possible to exploit the default build to obtain remote code execution (and XXE) via the theia-xml-extension. This extension uses lsp4xml (recently renamed to LemMinX) in order to provide language support for XML. This is installed by default.

Overview

CVE ID
CVE-2021-34436

Assigner
emo@eclipse.org

Vulnerability Status
Analyzed

Published Version
2021-09-02T21:15:07

Last Modified Date
2021-09-14T13:15:15

Weakness Enumerations

CWE	URL
CWE-22	http://cwe.mitre.org/data/definitions/22.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:eclipse:theia::::::::	1	OR	0.1.1	0.2.0

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
7.5

Severity
HIGH

Exploitability Score
10

Impact Score
6.4

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
9.8

Base Severity
CRITICAL

Exploitability Score
3.9

Impact Score
5.9

References

Reference URL	Reference Tags
https://bugs.eclipse.org/bugs/show_bug.cgi?id=563174	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-34436
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34436

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:05:39				Added to TrackCVE
2022-12-05 09:35:34	security@eclipse.org	emo@eclipse.org	CVE Assigner	updated
2022-12-05 09:35:34	2021-09-02T21:15Z	2021-09-02T21:15:07	CVE Published Date	updated
2022-12-05 09:35:34		2021-09-14T13:15:15	CVE Modified Date	updated
2022-12-05 09:35:34		Analyzed	Vulnerability Status	updated