What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2023-45223.

What is the severity level of CVE-2023-45223?

The severity level of CVE-2023-45223 is medium with a score of 4.3.

How does Mattermost Boards disclose users' full names?

Mattermost Boards fails to properly validate the "Show Full Name" option in some endpoints, allowing a member to access the full name of another user even if the option is disabled.

Which versions of Mattermost are affected by CVE-2023-45223?

The vulnerable versions of Mattermost are 7.8.13 and versions earlier than 8.1.4.

How can I fix the CVE-2023-45223 vulnerability?

To fix the vulnerability, update Mattermost to version 7.8.13 or later for the v6 package, and version 8.1.4 or later for the v8 package.

Vulnerability/
CVE-2023-45223

medium

4.3

CWE

200

27/11/2023

2/8/2024

CVE-2023-45223: Users full name disclosure through Mattermost Boards with Show Full Name Option disabled

First published: Mon Nov 27 2023(Updated: )

Mattermost fails to properly validate the "Show Full Name" option in a few endpoints in Mattermost Boards, allowing a member to get the full name of another user even if the Show Full Name option was disabled.

Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com

Affected Software	Affected Version	How to fix
go/github.com/mattermost/mattermost-server/v6	<7.8.13	7.8.13
go/github.com/mattermost/mattermost/server/v8	<8.1.4	8.1.4
Mattermost Mattermost	<=7.8.12
Mattermost Mattermost	>=8.0.0<=8.1.3

Remedy

Update Mattermost Server to versions 7.8.13, 8.1.4 or higher.

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Reference Links

Frequently Asked Questions

What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2023-45223.
What is the severity level of CVE-2023-45223?
The severity level of CVE-2023-45223 is medium with a score of 4.3.
How does Mattermost Boards disclose users' full names?
Mattermost Boards fails to properly validate the "Show Full Name" option in some endpoints, allowing a member to access the full name of another user even if the option is disabled.
Which versions of Mattermost are affected by CVE-2023-45223?
The vulnerable versions of Mattermost are 7.8.13 and versions earlier than 8.1.4.
How can I fix the CVE-2023-45223 vulnerability?
To fix the vulnerability, update Mattermost to version 7.8.13 or later for the v6 package, and version 8.1.4 or later for the v8 package.

collector/github-advisory-latest
alias/GHSA-p5pr-vm3j-jxxf
alias/CVE-2023-45223
collector/nvd-api
collector/nvd-cve
collector/github-advisory
agent/title
agent/references
agent/severity
agent/weakness
agent/author
agent/tags
agent/type
agent/event
agent/description
agent/remedy
agent/last-modified-date
agent/softwarecombine
agent/first-publish-date
collector/mitre-cve
source/MITRE
package-manager/go
vendor/mattermost
canonical/mattermost mattermost
version/mattermost mattermost/7.8.12
version/mattermost mattermost/8.0.0
version/mattermost mattermost/8.1.3

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