CVE-2020-35623

Severity Score

7.5

*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 the CasAuth extension for MediaWiki through 1.35.1. Due to improper username validation, it allowed user impersonation with trivial manipulations of certain characters within a given username. An ordinary user may be able to login as a "bureaucrat user" who has a similar username, as demonstrated by usernames that differ only in (1) bidirectional override symbols or (2) blank space.

Se detectó un problema en la extensión CasAuth para MediaWiki versiones hasta 1.35.1. Debido a una comprobación inapropiada del nombre de usuario, permitió la suplantación del usuario con manipulaciones triviales de determinados caracteres dentro de un nombre de usuario determinado. Un usuario común es capaz de iniciar sesión como un "bureaucrat user" que presenta un nombre de usuario similar, como es demostrado por los nombres de usuario que solo difieren en (1) símbolos de anulación bidireccionales o (2) espacios en blanco

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

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

2020-12-21 CVE Reserved
2020-12-21 CVE Published
2023-09-06 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-706: Use of Incorrectly-Resolved Name or Reference

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://phabricator.wikimedia.org/T263498	2024-08-04

URL	Date	SRC
https://github.com/CWRUChielLab/CASAuth/pull/11	2021-07-21

URL	Date	SRC

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