CVE-2023-5967: Denial of Service via crashing the Calls Plugin
First published: Mon Nov 06 2023(Updated: )
Mattermost fails to properly validate requests to the Calls plugin, allowing an attacker sending a request without a User Agent header to cause a panic and crash the Calls plugin
Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mattermost Mattermost | <=7.8.11 | |
| Mattermost Mattermost | >=8.0.0<=8.0.3 | |
| Mattermost Mattermost | >=8.1.0<=8.1.2 | |
| go/github.com/mattermost/mattermost/server/v8 | =9.0.0 | 9.0.1 |
| go/github.com/mattermost/mattermost/server/v8 | >=8.1.0<8.1.3 | 8.1.3 |
| go/github.com/mattermost/mattermost/server/v8 | >=8.0.0<8.0.4 | 8.0.4 |
| go/github.com/mattermost/mattermost-server/v6 | <7.8.12 | 7.8.12 |
Remedy
Update Mattermost Server to versions 7.8.12, 8.0.4, 8.1.3 or higher. Alternatively, upgrade the Calls plugin to 0.17.1 or higher.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-5967?
The severity of CVE-2023-5967 is medium, with a severity value of 4.3.
How does CVE-2023-5967 affect Mattermost?
CVE-2023-5967 affects Mattermost by allowing an attacker to crash the Calls plugin through a denial of service attack.
How can I exploit CVE-2023-5967?
To exploit CVE-2023-5967, an attacker can send a request to the Calls plugin without a User Agent header, causing a panic and crashing the plugin.
How do I fix CVE-2023-5967?
To fix CVE-2023-5967, upgrade Mattermost to version 7.8.12, 8.0.4, 8.1.3, or 9.0.1 depending on your current version.
Where can I find more information about CVE-2023-5967?
More information about CVE-2023-5967 can be found at the following references: [Mattermost Security Updates](https://mattermost.com/security-updates), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-5967), and [GitHub Advisories](https://github.com/advisories/GHSA-xvq6-h898-wcj8).
- collector/github-advisory-latest
- alias/GHSA-xvq6-h898-wcj8
- alias/CVE-2023-5967
- collector/github-advisory
- collector/nvd-api
- collector/nvd-cve
- agent/author
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- agent/title
- agent/remedy
- agent/weakness
- agent/severity
- agent/references
- agent/description
- agent/event
- collector/epss-latest
- source/FIRST
- agent/epss
- collector/mitre-cve
- source/MITRE
- package-manager/go
- vendor/mattermost
- canonical/mattermost mattermost
- version/mattermost mattermost/7.8.11
- version/mattermost mattermost/8.0.0
- version/mattermost mattermost/8.0.3
- version/mattermost mattermost/8.1.0
- version/mattermost mattermost/8.1.2