Mattermost up to 8.1.6/9.2.2 Guest Demotion access control

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Mattermost up to 8.1.6/9.2.2. Impacted is an unknown function of the component Guest Demotion. Performing a manipulation results in access control. This vulnerability is reported as CVE-2023-50333. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Mattermost up to 8.1.6/9.2.2. This affects some unknown processing of the component Guest Demotion. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Mattermost fails to update the permissions of the current session for a user who was just demoted to guest, allowing freshly demoted guests to change group names.

The weakness was disclosed 01/02/2024 by Leandro Chaves. It is possible to read the advisory at mattermost.com. This vulnerability is uniquely identified as CVE-2023-50333 since 12/21/2023. 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 8.1.7 eliminates this vulnerability.

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

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.3

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CNA Base Score: 3.7
CNA Vector (Mattermost, Inc.): 🔍

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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost 8.1.7

Timelineinfo

12/21/2023 🔍
01/02/2024 +12 days 🔍
01/02/2024 +0 days 🔍
01/22/2024 +20 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Leandro Chaves
Status: Confirmed

CVE: CVE-2023-50333 (🔍)
GCVE (CVE): GCVE-0-2023-50333
GCVE (VulDB): GCVE-100-249507

Entryinfo

Created: 01/02/2024 11:29
Updated: 01/22/2024 18:19
Changes: 01/02/2024 11:29 (50), 01/22/2024 18:19 (10)
Complete: 🔍
Cache ID: 216::103

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