CVE-2023-5193: System Role with manage posts permission can read posts of Direct Messages
First published: Fri Sep 29 2023(Updated: )
Mattermost fails to properly check permissions when retrieving a post allowing for a System Role with the permission to manage channels to read the posts of a DM conversation.
Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/github.com/mattermost/mattermost-server/v6 | <7.8.10 | 7.8.10 |
| go/github.com/mattermost/mattermost/server/v8 | >=8.0.0<8.0.2 | 8.0.2 |
| go/github.com/mattermost/mattermost/server/v8 | =8.1.0 | 8.1.1 |
| Mattermost Mattermost | >=7.0.0<7.8.10 | |
| Mattermost Mattermost | >=8.0.0<8.0.2 | |
| Mattermost Mattermost | >=8.1.0<8.1.1 |
Remedy
Update Mattermost Server to versions 7.8.10, 8.0.2, 8.1.1 or higher
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-5193?
The severity of CVE-2023-5193 is medium with a severity value of 4.9.
How does Mattermost fail to properly check permissions in CVE-2023-5193?
Mattermost fails to properly check permissions when retrieving a post, allowing a System Role with the permission to manage channels to read the posts of a DM conversation.
Which versions of Mattermost are affected by CVE-2023-5193?
Versions 7.8.10, 8.0.0 to 8.0.1, and 8.1.0 are affected by CVE-2023-5193.
How can I fix CVE-2023-5193?
To fix CVE-2023-5193, update to Mattermost version 7.8.11, 8.0.2, or 8.1.1.
Where can I find more information about CVE-2023-5193?
You can find more information about CVE-2023-5193 at the following references: [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-5193), [Mattermost Security Updates](https://mattermost.com/security-updates), [GitHub Advisories](https://github.com/advisories/GHSA-h8wh-f7gw-fwpr).
- collector/github-advisory-latest
- alias/GHSA-h8wh-f7gw-fwpr
- alias/CVE-2023-5193
- collector/github-advisory
- collector/nvd-api
- collector/nvd-index
- collector/nvd-cve
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/title
- agent/weakness
- agent/references
- agent/remedy
- agent/author
- agent/last-modified-date
- agent/tags
- agent/description
- agent/event
- agent/first-publish-date
- package-manager/go
- vendor/mattermost
- canonical/mattermost mattermost
- version/mattermost mattermost/7.0.0
- version/mattermost mattermost/8.0.0
- version/mattermost mattermost/8.1.0