Mattermost up to 9.5.5/9.6.2/9.7.4/9.8.0 Shared Channel improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Mattermost up to 9.5.5/9.6.2/9.7.4/9.8.0. It has been classified as critical. This affects an unknown function of the component Shared Channel Handler. This manipulation causes improper authentication. The identification of this vulnerability is CVE-2024-39830. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Mattermost up to 9.5.5/9.6.2/9.7.4/9.8.0. Affected by this vulnerability is an unknown code block of the component Shared Channel Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Mattermost versions 9.8.x <= 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5, when shared channels are enabled, fail to use constant time comparison for remote cluster tokens which allows an attacker to retrieve the remote cluster token via a timing attack during remote cluster token comparison.

The weakness was shared by Juho Forsén. The advisory is shared at mattermost.com. This vulnerability is known as CVE-2024-39830 since 07/01/2024. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 9.5.6, 9.6.3, 9.7.5, 9.8.1 or 9.9.0 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CNA Base Score: 8.1
CNA Vector (Mattermost): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
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 9.5.6/9.6.3/9.7.5/9.8.1/9.9.0

Timelineinfo

07/01/2024 🔍
07/03/2024 +2 days 🔍
07/03/2024 +0 days 🔍
07/06/2024 +3 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Juho Forsén
Status: Confirmed

CVE: CVE-2024-39830 (🔍)
GCVE (CVE): GCVE-0-2024-39830
GCVE (VulDB): GCVE-100-270289

Entryinfo

Created: 07/03/2024 11:03
Updated: 07/06/2024 05:24
Changes: 07/03/2024 11:03 (64), 07/06/2024 05:24 (12)
Complete: 🔍
Cache ID: 216::103

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