CVE-2024-36257

Lack of permission check when updating the profile picture of a remote user (shared channels enabled)

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Mattermost versions 9.5.x <= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.

Las versiones 9.5.x <= 9.5.5 y 9.8.0 de Mattermost, cuando se utilizan canales compartidos con varios servidores remotos conectados, no verifican que el servidor remoto A que solicita al servidor B que actualice la imagen de perfil de un usuario sea el remoto que realmente tiene el usuario como local. Esto permite que un control remoto malicioso A cambie las imágenes de perfil de los usuarios que pertenecen a otro servidor remoto C que está conectado al servidor A.

*Credits: Juho Forsén

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

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-07-01 CVE Reserved
2024-07-03 CVE Published
2024-07-06 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-284: Improper Access Control

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://mattermost.com/security-updates	2024-07-05

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mattermost Search vendor "Mattermost"		Mattermost Search vendor "Mattermost" for product "Mattermost"				>= 9.5.0 < 9.5.6 Search vendor "Mattermost" for product "Mattermost" and version " >= 9.5.0 < 9.5.6"		-		Affected
Mattermost Search vendor "Mattermost"		Mattermost Search vendor "Mattermost" for product "Mattermost"				9.8.0 Search vendor "Mattermost" for product "Mattermost" and version "9.8.0"		-		Affected