CVE-2021-42041

CVSS V2 Medium 4.3 CVSS V3 Medium 6.1

Description

An issue was discovered in CentralAuth in MediaWiki through 1.36.2. The rightsnone MediaWiki message was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript via the setchange log.

Overview

CVE ID
CVE-2021-42041

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2021-10-06T21:15:07

Last Modified Date
2021-10-14T18:55:24

Weakness Enumerations

CWE	URL
CWE-79	http://cwe.mitre.org/data/definitions/79.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:mediawiki:mediawiki::::::::	1	OR		1.36.2

CVSS Version 2

Version
2.0

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

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
PARTIAL

Availability Impact
NONE

Base Score
4.3

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
2.9

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
CHANGED

Confidentiality Impact
LOW

Availability Impact
NONE

Base Score
6.1

Base Severity
MEDIUM

Exploitability Score
2.8

Impact Score
2.7

References

Reference URL	Reference Tags
https://phabricator.wikimedia.org/T291696	Exploit Patch Vendor Advisory
https://gerrit.wikimedia.org/r/q/I7aeaa6e4de5ccaa5eeb6bf4fb00c96b01d5fea35	Patch Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-42041
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42041

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:51:39				Added to TrackCVE
2022-12-05 11:58:30	2021-10-06T21:15Z	2021-10-06T21:15:07	CVE Published Date	updated
2022-12-05 11:58:30		2021-10-14T18:55:24	CVE Modified Date	updated
2022-12-05 11:58:30		Analyzed	Vulnerability Status	updated