VDB-249506 · CVE-2023-47858 · GCVE-0-2023-47858

Mattermost up to 8.1.6/9.0.4/9.1.3/9.2.2 Archived Public Channel deleted access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Mattermost up to 8.1.6/9.0.4/9.1.3/9.2.2. This issue affects some unknown processing of the file /api/v4/teams//channels/deleted of the component Archived Public Channel Handler. Such manipulation leads to access control. This vulnerability is documented as CVE-2023-47858. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Mattermost up to 8.1.6/9.0.4/9.1.3/9.2.2. It has been rated as critical. Affected by this issue is an unknown code block of the file /api/v4/teams//channels/deleted of the component Archived Public 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 verify the permissions needed for viewing archived public channels, allowing a member of one team to get details about the archived public channels of another team via the GET /api/v4/teams//channels/deleted endpoint.

The weakness was released 01/02/2024 by Vultza. The advisory is available at mattermost.com. This vulnerability is handled as CVE-2023-47858 since 12/21/2023. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 8.1.7, 9.0.5, 9.1.4 or 9.2.3 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Groupware Software

Name

Mattermost

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.3
CNA Vector (Mattermost, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mattermost 8.1.7/9.0.5/9.1.4/9.2.3

Timelineinfo

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

Sourcesinfo

Advisory: mattermost.com
Researcher: Vultza
Status: Confirmed

CVE: CVE-2023-47858 (🔍)
GCVE (CVE): GCVE-0-2023-47858
GCVE (VulDB): GCVE-100-249506

Entryinfo

Created: 01/02/2024 11:29
Changes: 01/02/2024 11:29 (51)
Complete: 🔍
Cache ID: 216::103