CVE-2021-44857

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=mcrundo followed by action=mcrrestore to replace the content of any arbitrary page (that the user doesn't have edit rights for). This applies to any public wiki, or a private wiki that has at least one page set in $wgWhitelistRead.

Se ha detectado un problema en MediaWiki versiones anteriores a 1.35.5, versiones 1.36.x anteriores a 1.36.3 y versiones 1.37.x anteriores a 1.37.1. Es posible usar action=mcrundo seguido de action=mcrrestore para reemplazar el contenido de cualquier página arbitraria (para la que el usuario no tenga derechos de edición). Esto se aplica a cualquier wiki público, o a un wiki privado que tenga al menos una página establecida en $wgWhitelistRead

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-12-13 CVE Reserved
2021-12-17 CVE Published
2023-11-02 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-862: Missing Authorization

CAPEC

References (3)

URL	Tag	Source
https://phabricator.wikimedia.org/T297322	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202305-24	2023-05-21
https://www.mediawiki.org/wiki/2021-12_security_release/FAQ	2023-05-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mediawiki Search vendor "Mediawiki"		Mediawiki Search vendor "Mediawiki" for product "Mediawiki"				< 1.35.5 Search vendor "Mediawiki" for product "Mediawiki" and version " < 1.35.5"		-		Affected
Mediawiki Search vendor "Mediawiki"		Mediawiki Search vendor "Mediawiki" for product "Mediawiki"				>= 1.36.0 < 1.36.3 Search vendor "Mediawiki" for product "Mediawiki" and version " >= 1.36.0 < 1.36.3"		-		Affected
Mediawiki Search vendor "Mediawiki"		Mediawiki Search vendor "Mediawiki" for product "Mediawiki"				>= 1.37.0 < 1.37.1 Search vendor "Mediawiki" for product "Mediawiki" and version " >= 1.37.0 < 1.37.1"		-		Affected