Mattermost up to 8.1.8/9.4.1 Archived Channel access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Mattermost up to 8.1.8/9.4.1. This vulnerability affects unknown code of the component Archived Channel Handler. Such manipulation leads to access control. This vulnerability is documented as CVE-2024-23488. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Mattermost up to 8.1.8/9.4.1 and classified as problematic. Affected by this issue is some unknown functionality of the component Archived Channel 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 confidentiality. CVE summarizes:

Mattermost fails to properly restrict the access of files attached to posts in an archived channel, resulting in members being able to access files of archived channels even if the “Allow users to view archived channels” option is disabled.

The weakness was released 02/29/2024 by Bharat. The advisory is shared for download at mattermost.com. This vulnerability is handled as CVE-2024-23488 since 02/26/2024. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 8.1.9, 9.4.2 or 9.5.0 eliminates this vulnerability.

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: 3.5
VulDB Meta Temp Score: 3.5

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CNA Base Score: 3.1
CNA Vector (Mattermost, Inc.): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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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 8.1.9/9.4.2/9.5.0

Timelineinfo

02/26/2024 🔍
02/29/2024 +3 days 🔍
02/29/2024 +0 days 🔍
05/12/2025 +438 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Bharat
Status: Confirmed

CVE: CVE-2024-23488 (🔍)
GCVE (CVE): GCVE-0-2024-23488
GCVE (VulDB): GCVE-100-255236

Entryinfo

Created: 02/29/2024 09:49
Updated: 05/12/2025 15:53
Changes: 02/29/2024 09:49 (49), 02/29/2024 09:52 (1), 05/12/2025 15:53 (28)
Complete: 🔍
Cache ID: 216::103

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