VDB-275579 · CVE-2024-40884 · GCVE-0-2024-40884

Mattermost up to 9.5.7/9.10.0/9.11.0 Add Team Members access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
2.6	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Mattermost up to 9.5.7/9.10.0/9.11.0 and classified as critical. The impacted element is an unknown function of the component Add Team Members Handler. The manipulation leads to access control. This vulnerability is traded as CVE-2024-40884. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mattermost up to 9.5.7/9.10.0/9.11.0. It has been rated as problematic. This issue affects an unknown part of the component Add Team Members Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is availability. The summary by CVE is:

Mattermost versions 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 fail to properly enforce permissions which allows a team admin user without "Add Team Members" permission to disable the invite URL.

The weakness was shared by Omar Ahmed. It is possible to read the advisory at mattermost.com. The identification of this vulnerability is CVE-2024-40884 since 08/16/2024. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 9.5.8, 9.10.1 or 9.11.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Groupware Software

Name

Mattermost

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.7
VulDB Meta Temp Score: 2.7

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 2.7
CNA Vector (Mattermost): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost 9.5.8/9.10.1/9.11.0

Timelineinfo

08/16/2024 🔍
08/22/2024 +6 days 🔍
08/22/2024 +0 days 🔍
08/23/2024 +1 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Omar Ahmed
Status: Confirmed

CVE: CVE-2024-40884 (🔍)
GCVE (CVE): GCVE-0-2024-40884
GCVE (VulDB): GCVE-100-275579

Entryinfo

Created: 08/22/2024 18:03
Updated: 08/23/2024 14:47
Changes: 08/22/2024 18:03 (64), 08/23/2024 14:47 (1)
Complete: 🔍
Cache ID: 216::103