CVE-2020-25828

Severity Score

6.1

*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 1.31.10 and 1.32.x through 1.34.x before 1.34.4. The non-jqueryMsg version of mw.message().parse() doesn't escape HTML. This affects both message contents (which are generally safe) and the parameters (which can be based on user input). (When jqueryMsg is loaded, it correctly accepts only whitelisted tags in message contents, and escapes all parameters. Situations with an unloaded jqueryMsg are rare in practice, but can for example occur for Special:SpecialPages on a wiki with no extensions installed.)

Se detectó un problema en MediaWiki versiones anteriores a 1.31.10 y desde1.32.x hasta 1.34.x anteriores a 1.34.4. La versión que no es jqueryMsg de la función mw.message(). La función Parse() no escapa al HTML. Esto afecta tanto al contenido del mensaje (que generalmente es seguro) como a los parámetros (que pueden estar basados en la entrada de usuario). (Cuando se carga jqueryMsg, acepta correctamente solo las etiquetas en la lista blanca en el contenido del mensaje y escapa todos los parámetros. Las situaciones con un jqueryMsg descargado son raras en la práctica, pero pueden ocurrir, por ejemplo, para Special:SpecialPages en una wiki sin extensiones instaladas)

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-09-23 CVE Reserved
2020-09-27 CVE Published
2024-08-01 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6	2023-11-07
https://lists.wikimedia.org/pipermail/mediawiki-announce	2023-11-07
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html	2023-11-07
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html	2023-11-07

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"				>= 1.32.0 < 1.34.4 Search vendor "Mediawiki" for product "Mediawiki" and version " >= 1.32.0 < 1.34.4"		-		Affected
Mediawiki Search vendor "Mediawiki"		Mediawiki Search vendor "Mediawiki" for product "Mediawiki"				1.31.10 Search vendor "Mediawiki" for product "Mediawiki" and version "1.31.10"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected