There is a current IT security warning for Mattermost. You can find out what the vulnerability is, which products are affected and what you can do here.
The Federal Office for Security in Information Technology (BSI) published a security advisory for Mattermost on November 14, 2023. The operating systems Linux, MacOS X and Windows as well as the Mattermost Mattermost product are affected by the security vulnerability.
The latest manufacturer recommendations regarding updates, workarounds and security patches for this vulnerability can be found here: Mattermost Security Updates (Stand: 13.11.2023).
Safety notice for Mattermost – Risk: medium
Risk level: 3 (medium)
CVSS Base Score: 7,3
CVSS Temporal Score: 6,4
Remoteangriff: Ja
The Common Vulnerability Scoring System (CVSS) is used to assess the vulnerability of computer systems. The CVSS standard makes it possible to compare potential or actual security vulnerabilities based on various criteria in order to create a priority list for taking countermeasures. The attributes “none”, “low”, “medium”, “high” and “critical” are used to determine the severity levels of a vulnerability. The Base Score evaluates the requirements for an attack (including authentication, complexity, privileges, user interaction) and its consequences. With the temporal score, framework conditions that can change over time are taken into account in the evaluation. The risk of the vulnerability discussed here is classified as “medium” according to the CVSS with a base score of 7.3.
Mattermost Bug: Multiple vulnerabilities allow unspecified attack
Mattermost is a web-based instant messaging service.
An attacker could exploit multiple vulnerabilities in Mattermost to conduct an unspecified attack.
Systems affected by the Mattermost vulnerability at a glance
Operating systems
Linux, MacOS X, Windows
Products
Mattermost Mattermost Mattermost Mattermost Mattermost Mattermost Mattermost Mattermost Mattermost Mattermost
General measures for dealing with IT vulnerabilities
Users of the affected applications should keep them up to date. When security gaps become known, manufacturers are required to fix them as quickly as possible by developing a patch or a workaround. If security patches are available, install them promptly. For information, consult the sources listed in the next section. These often contain further information about the latest version of the software in question as well as the availability of security patches or information about workarounds. If you have any further questions or uncertainties, please contact your responsible administrator. IT security managers should regularly check the sources mentioned to see whether a new security update is available.
Sources of updates, patches and workarounds
Here you will find further links with information about bug reports, security fixes and workarounds.
Mattermost Security Updates vom 2023-11-13 (14.11.2023)
For more information, see:
Version history of this security alert
This is the initial version of this IT security notice for Mattermost. If updates are announced, this text will be updated. You can see the changes made using the version history below.
November 14, 2023 – Initial version
+++ Editorial note: This text was created using AI based on current BSI data. We accept feedback and comments at [email protected]. +++
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Edited by kns
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