CVE-2023-5969: Denial of Service via Link Preview in /api/v4/redirect_location
First published: Mon Nov 06 2023(Updated: )
Mattermost fails to properly sanitize the request to /api/v4/redirect_location allowing an attacker, sending a specially crafted request to /api/v4/redirect_location, to fill up the memory due to caching large items.
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 | |
| Mattermost Mattermost | =9.0.0 | |
| 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 |
| <=7.8.11 | ||
| >=8.0.0<=8.0.3 | ||
| >=8.1.0<=8.1.2 | ||
| =9.0.0 |
Remedy
Update Mattermost Server to versions 7.8.12, 8.0.4, 8.1.3, 9.0.1 or higher.
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2023-5969.
What is the title of the vulnerability?
The title of the vulnerability is 'Denial of Service via Link Preview in /api/v4/redirect_location'.
How does the vulnerability occur?
The vulnerability occurs when Mattermost fails to properly sanitize the request to /api/v4/redirect_location, allowing an attacker to fill up the memory due to caching large items.
What is the severity of CVE-2023-5969?
The severity of CVE-2023-5969 is medium with a CVSS score of 5.3.
How do I fix CVE-2023-5969?
To fix CVE-2023-5969, update Mattermost to version 9.0.1, 8.1.3, 8.0.4, or 7.8.12 depending on the affected version.
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- collector/github-advisory-latest
- alias/GHSA-w496-f5qq-m58j
- alias/CVE-2023-5969
- collector/github-advisory
- agent/author
- agent/type
- agent/first-publish-date
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- collector/mitre-cve
- source/MITRE
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/last-modified-date
- agent/softwarecombine
- agent/event
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- 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
- version/mattermost mattermost/9.0.0
- package-manager/go