Mattermost Server vulnerabilities

CVE-2023-45847 [HIGH] CWE-400 CVE-2023-45847: Mattermost fails to to check the length when setting the title in a run checklist in Playbooks, allo Mattermost fails to to check the length when setting the title in a run checklist in Playbooks, allowing an attacker to send a specially crafted request and crash the Playbooks plugin

CVE-2023-6727 [MEDIUM] CWE-200 CVE-2023-6727: Mattermost fails to perform correct authorization checks when creating a playbook action, allowing u Mattermost fails to perform correct authorization checks when creating a playbook action, allowing users without access to the playbook to create playbook actions. If the playbook action created is to post a message in a channel based on specific keywords in a post, some playbook information, like the name, can be leaked.

CVE-2023-6547 [MEDIUM] CWE-284 CVE-2023-6547: Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a u Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.

CVE-2023-46701 [MEDIUM] CWE-200 CVE-2023-46701: Mattermost fails to perform authorization checks in the /plugins/playbooks/api/v0/runs/add-to-timel Mattermost fails to perform authorization checks in the /plugins/playbooks/api/v0/runs/add-to-timeline-dialog endpoint of the Playbooks plugin allowing an attacker to get limited information about a post if they know the post ID

CVE-2023-49809 [MEDIUM] CWE-400 CVE-2023-49809: Mattermost fails to handle a null request body in the /add endpoint, allowing a simple member to sen Mattermost fails to handle a null request body in the /add endpoint, allowing a simple member to send a request with null request body to that endpoint and make it crash. After a few repetitions, the plugin is disabled.

CVE-2023-49874 [MEDIUM] CWE-284 CVE-2023-49874: Mattermost fails to check whether a user is a guest when updating the tasks of a private playbook ru Mattermost fails to check whether a user is a guest when updating the tasks of a private playbook run allowing a guest to update the tasks of a private playbook run if they know the run ID.

CVE-2023-6458 [CRITICAL] CWE-74 CVE-2023-6458: Mattermost webapp fails to validate route parameters in/<TEAM_NAME>/channels/<CHANNEL_NAME> allowing Mattermost webapp fails to validate route parameters in//channels/ allowing an attacker to perform a client-side path traversal.

CVE-2023-6459 [MEDIUM] CWE-200 CVE-2023-6459: Mattermost is grouping calls in the /metrics endpoint by id and reports that id in the response. Sin Mattermost is grouping calls in the /metrics endpoint by id and reports that id in the response. Since this id is the channelID, the public /metrics endpoint is revealing channelIDs.

CVE-2023-5330 [HIGH] CWE-400 CVE-2023-5330: Mattermost fails to enforce a limit for the size of the cache entry for OpenGraph data allowing an Mattermost fails to enforce a limit for the size of the cache entry for OpenGraph data allowing an attacker to send a specially crafted request to the /api/v4/opengraph filling the cache and turning the server unavailable.

CVE-2023-5333 [MEDIUM] CWE-400 CVE-2023-5333: Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume Mattermost fails to deduplicate input IDs allowing a simple user to cause the application to consume excessive resources and possibly crash by sending a specially crafted request to /api/v4/users/ids with multiple identical IDs.

CVE-2023-5331 [MEDIUM] CWE-862 CVE-2023-5331: Mattermost fails to properly check the creator of an attached file when adding the file to a draft p Mattermost fails to properly check the creator of an attached file when adding the file to a draft post, potentially exposing unauthorized file information.

CVE-2023-4478 [HIGH] CWE-74 CVE-2023-4478: Mattermost fails to restrict which parameters' values it takes from the request during signup allowi Mattermost fails to restrict which parameters' values it takes from the request during signup allowing an attacker to register users as inactive, thus blocking them from later accessing Mattermost without the system admin activating their accounts.

CVE-2023-3581 [HIGH] CWE-346 CVE-2023-3581: Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker Mattermost fails to properly validate the origin of a websocket connection allowing a MITM attacker on Mattermost to access the websocket APIs.

CVE-2023-3591 [HIGH] CWE-287 CVE-2023-3591: Mattermost fails to invalidate previously generated password reset tokens when a new reset token was Mattermost fails to invalidate previously generated password reset tokens when a new reset token was created.

CVE-2023-3590 [HIGH] CWE-863 CVE-2023-3590: Mattermost fails to delete card attachments in Boards, allowing an attacker to access deleted attach Mattermost fails to delete card attachments in Boards, allowing an attacker to access deleted attachments.

CVE-2023-3582 [MEDIUM] CWE-863 CVE-2023-3582: Mattermost fails to verify channel membership when linking a board to a channel allowing a low-privi Mattermost fails to verify channel membership when linking a board to a channel allowing a low-privileged authenticated user to link a Board to a private channel they don't have access to,

CVE-2023-3577 [MEDIUM] CWE-918 CVE-2023-3577: Mattermost fails to properly restrict requests to localhost/intranet during the interactive dialog, Mattermost fails to properly restrict requests to localhost/intranet during the interactive dialog, which could allow an attacker to perform a limited blind SSRF.

CVE-2023-3593 [MEDIUM] CWE-400 CVE-2023-3593: Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a speci Mattermost fails to properly validate markdown, allowing an attacker to crash the server via a specially crafted markdown input.

CVE-2023-3586 [MEDIUM] CWE-863 CVE-2023-3586: Mattermost fails to disable public Boards after the "Enable Publicly-Shared Boards" configuration op Mattermost fails to disable public Boards after the "Enable Publicly-Shared Boards" configuration option is disabled, resulting in previously-shared public Boards to remain accessible.

CVE-2023-3585 [MEDIUM] CWE-400 CVE-2023-3585: Mattermost Boards fail to properly validate a board link, allowing an attacker to crash a channel by Mattermost Boards fail to properly validate a board link, allowing an attacker to crash a channel by posting a specially crafted boards link.