CVE-2024-29977: Malicious remote can create arbitrary reactions on arbitrary posts
First published: Thu Aug 01 2024(Updated: )
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts
Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/github.com/mattermost/mattermost/server/v8 | =9.9.0 | 9.9.1 |
| go/github.com/mattermost/mattermost/server/v8 | >=9.5.0<9.5.7 | 9.5.7 |
| Mattermost | >=9.5.0<9.5.7 | |
| Mattermost | =9.9.0 |
Remedy
Update Mattermost to versions 9.10.0, 9.9.1, 9.5.7 or higher.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-29977?
The severity of CVE-2024-29977 is considered to be critical due to the ability for a malicious remote user to create arbitrary reactions.
How do I fix CVE-2024-29977?
To fix CVE-2024-29977, upgrade Mattermost to version 9.9.1 or 9.5.7 or later.
Which versions of Mattermost are affected by CVE-2024-29977?
Mattermost versions 9.9.x up to and including 9.9.0 and versions 9.5.x up to and including 9.5.6 are affected by CVE-2024-29977.
What is the impact of CVE-2024-29977 on Mattermost?
CVE-2024-29977 allows a remote attacker to create arbitrary reactions on arbitrary posts, potentially leading to misinformation or abuse.
Is there a workaround for CVE-2024-29977?
There is no publicly advised workaround for CVE-2024-29977; the best action is to upgrade to a patched version.
- agent/remedy
- agent/weakness
- agent/title
- agent/type
- agent/description
- agent/first-publish-date
- agent/author
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/severity
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-jq3g-xqpx-37x3
- alias/CVE-2024-29977
- agent/software-canonical-lookup
- agent/last-modified-date
- agent/softwarecombine
- agent/event
- collector/github-advisory
- agent/trending
- agent/source
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup-request
- collector/nvd-cve
- package-manager/go
- vendor/mattermost
- canonical/mattermost
- version/mattermost/9.5.0
- version/mattermost/9.9.0