CVE-2020-35477

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page, visits a log entry on Special:Log, and toggles the "Change visibility of selected log entries" checkbox (or a tags checkbox) next to it, there is a redirection to the main page's action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).

MediaWiki versiones anteriores a 1.35.1, bloquea los intentos legítimos de ocultar las entradas del registro en algunas situaciones. Si uno establece MediaWiki:Mainpage en la Página Special:MyLanguage/Main, visita una entrada de registro en Special:Log y alterna la casilla de comprobación "Change visibility of selected log entries" (o una casilla de comprobación de etiquetas) junto a ella, se presenta un redireccionamiento a action=historysubmit de la página principal (en lugar del comportamiento deseado en el que aparece un formulario de revisión-eliminación)

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-16 CVE Reserved
2020-12-18 CVE Published
2023-11-08 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-670: Always-Incorrect Control Flow Implementation

CAPEC

References (5)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html	Mailing List

URL	Date	SRC
https://phabricator.wikimedia.org/T205908	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC	2023-11-07
https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html	2023-11-07
https://www.debian.org/security/2020/dsa-4816	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"				< 1.35.1 Search vendor "Mediawiki" for product "Mediawiki" and version " < 1.35.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected