CVE-2024-39777

Malicious remote can invite itself to an arbitrary local channel

State: Published
Severity: 8.7 High
Published: Aug 1, 2024
Updated: Aug 1, 2024
Reserved: Jul 23, 2024

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin.

Scores

CVSS	Score	Vector	Source
3.1	8.7 High	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N	Mattermost

Weaknesses

CWE-284 Improper Access Control

Affected Products

Product	Versions
MattermostMattermost	9.9.0Affected 9.5.0 through 9.5.6Affected 9.7.0 through 9.7.5Affected 9.8.0 through 9.8.1Affected 9.10.0Not affected 9.9.1Not affected 9.5.7Not affected 9.7.6Not affected 9.8.2Not affected

References

https://mattermost.com/security-updates

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