Mattermost up to 9.11.0 manage_system access control

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Mattermost up to 9.5.7/9.8.2/9.9.1/9.10.0/9.11.0. This impacts the function manage_system. Executing a manipulation can lead to access control. This vulnerability appears as CVE-2024-8071. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Mattermost up to 9.5.7/9.8.2/9.9.1/9.10.0/9.11.0 and classified as critical. This vulnerability affects the function manage_system. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 and 9.8.x <= 9.8.2 fail to restrict which roles can promote a user as system admin which allows a System Role with edit access to the permissions section of system console to update their role (e.g. member) to include the `manage_system` permission, effectively becoming a System Admin.

The weakness was presented by Bharat. The advisory is shared for download at mattermost.com. This vulnerability was named CVE-2024-8071 since 08/22/2024. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are necessary for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 209299 (Mattermost Server 9.5.x < 9.5.8 / 9.8.x < 9.8.3 / 9.9.x < 9.9.2 / 9.10.x < 9.10.1 (MMSA-2024-00374)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.5.8, 9.8.3, 9.9.2, 9.10.1 or 9.11.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (209299). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CNA Base Score: 4.7
CNA Vector (Mattermost): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Nessus ID: 209299
Nessus Name: Mattermost Server 9.5.x < 9.5.8 / 9.8.x < 9.8.3 / 9.9.x < 9.9.2 / 9.10.x < 9.10.1 (MMSA-2024-00374)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost 9.5.8/9.8.3/9.9.2/9.10.1/9.11.0

Timelineinfo

08/22/2024 🔍
08/22/2024 +0 days 🔍
08/22/2024 +0 days 🔍
10/19/2024 +58 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Bharat
Status: Confirmed

CVE: CVE-2024-8071 (🔍)
GCVE (CVE): GCVE-0-2024-8071
GCVE (VulDB): GCVE-100-275548

Entryinfo

Created: 08/22/2024 10:07
Updated: 10/19/2024 04:01
Changes: 08/22/2024 10:07 (64), 08/23/2024 14:17 (1), 08/24/2024 10:20 (11), 10/19/2024 04:01 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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