CVE-2023-3550

Stored XSS leads to privilege escalation in MediaWiki v1.40.0

Severity Score

7.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Mediawiki v1.40.0 does not validate namespaces used in XML files.

Therefore, if the instance administrator allows XML file uploads,

a remote attacker with a low-privileged user account can use this

exploit to become an administrator by sending a malicious link to

the instance administrator.

Mediawiki v1.40.0 no valida los espacios de nombres utilizados en archivos XML. Por lo tanto, si el administrador de la instancia permite la carga de archivos XML, un atacante remoto con una cuenta de usuario con pocos privilegios puede utilizar este exploit para convertirse en administrador enviando un enlace malicioso al administrador de la instancia.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-07-08 CVE Reserved
2023-09-25 CVE Published
2024-08-02 CVE Updated
2024-08-02 First Exploit
2024-08-25 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

CAPEC-592: Stored XSS

References (5)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html	Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY
https://www.debian.org/security/2023/dsa-5520	Third Party Advisory
https://www.mediawiki.org/wiki/MediaWiki	Product

URL	Date	SRC
https://fluidattacks.com/advisories/blondie	2024-08-02

URL	Date	SRC

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"				1.40.0 Search vendor "Mediawiki" for product "Mediawiki" and version "1.40.0"		-		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
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected