Mattermost up to 9.5.6/9.9.0 Shared Channel access control

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Mattermost up to 9.5.6/9.9.0 and classified as critical. This impacts an unknown function of the component Shared Channel Handler. Performing a manipulation results in access control. This vulnerability is identified as CVE-2024-29977. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mattermost up to 9.5.6/9.9.0. It has been classified as problematic. This affects an unknown part of the component Shared Channel Handler. 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 integrity, and availability. The summary by CVE is:

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts

The weakness was released by Juho Forsén. The advisory is shared at mattermost.com. This vulnerability is uniquely identified as CVE-2024-29977 since 07/23/2024. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 9.5.7, 9.9.1 or 9.10.0 eliminates this vulnerability.

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Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.6
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.8
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CNA Base Score: 2.7
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost 9.5.7/9.9.1/9.10.0

Timelineinfo

07/23/2024 🔍
08/01/2024 +9 days 🔍
08/01/2024 +0 days 🔍
08/24/2024 +23 days 🔍

Sourcesinfo

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

CVE: CVE-2024-29977 (🔍)
GCVE (CVE): GCVE-0-2024-29977
GCVE (VulDB): GCVE-100-273381

Entryinfo

Created: 08/01/2024 16:47
Updated: 08/24/2024 04:38
Changes: 08/01/2024 16:47 (64), 08/24/2024 04:38 (13)
Complete: 🔍
Cache ID: 216::103

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