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Mattermost fails to correctly delete attachments

Low severity GitHub Reviewed Published Aug 11, 2023 to the GitHub Advisory Database • Updated Nov 9, 2023

Package

gomod github.com/mattermost/mattermost-server/v6 (Go)

Affected versions

>= 7.9.0, <= 7.9.5
>= 7.10.0, <= 7.10.3
<= 7.8.7

Patched versions

7.9.6
7.10.4
7.8.8

Description

Mattermost fails to delete the attachments when deleting a message in a thread allowing a simple user to still be able to access and download the attachment of a deleted message

References

Published by the National Vulnerability Database Aug 11, 2023
Published to the GitHub Advisory Database Aug 11, 2023
Reviewed Aug 11, 2023
Last updated Nov 9, 2023

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.053%
(22nd percentile)

Weaknesses

CVE ID

CVE-2023-4105

GHSA ID

GHSA-g3v6-r8p9-wxg9

Source code

github.com/mattermost/mattermost
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