Mattermost up to 7.8.12/8.1.3 Username Icon access control

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability has been found in Mattermost up to 7.8.12/8.1.3 and classified as critical. This issue affects some unknown processing of the component Username Icon Handler. This manipulation causes access control. This vulnerability is handled as CVE-2023-47865. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Mattermost up to 7.8.12/8.1.3. Affected by this vulnerability is an unknown part of the component Username Icon Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect integrity. The summary by CVE is:

Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post. If settings allowed integrations to override the username and profile picture when posting, a member could also override the username and icon when making a post even if the Hardened Mode setting was enabled

The weakness was released 11/27/2023 by Eva Sarafianou. It is possible to read the advisory at mattermost.com. This vulnerability is known as CVE-2023-47865 since 11/22/2023. 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 7.8.13 or 8.1.4 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: 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

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 7.8.13/8.1.4

Timelineinfo

11/22/2023 🔍
11/27/2023 +5 days 🔍
11/27/2023 +0 days 🔍
11/27/2023 +0 days 🔍

Sourcesinfo

Advisory: mattermost.com
Researcher: Eva Sarafianou
Status: Confirmed

CVE: CVE-2023-47865 (🔍)
GCVE (CVE): GCVE-0-2023-47865
GCVE (VulDB): GCVE-100-246151

Entryinfo

Created: 11/27/2023 11:00
Changes: 11/27/2023 11:00 (50)
Complete: 🔍
Cache ID: 216::103

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