MEDIUM4.3
GHSA-32h7-7j94-8fc2
Mattermost vulnerable to denial of service via large number of emoji reactions
Quick fix
GHSA-32h7-7j94-8fc2 — github.com/mattermost/mattermost/server/v8: upgrade to the fixed version with the command below.
go get github.com/mattermost/mattermost/server/v8@v8.1.8Details
Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post. Fetching posts with huge amounts of reactions results in Uncontrolled Resource Consumption.
Are you affected?
Enter the version of the package you're using.
Affected packages
Go/github.com/mattermost/mattermost/server/v8
Introduced in:
0Fixed in: 8.1.8Fix
go get github.com/mattermost/mattermost/server/v8@v8.1.8Go/github.com/mattermost/mattermost/server/v8
Introduced in:
9.2.0Fixed in: 9.2.4Fix
go get github.com/mattermost/mattermost/server/v8@v9.2.4Go/github.com/mattermost/mattermost/server/v8
Introduced in:
9.1.0Fixed in: 9.1.5Fix
go get github.com/mattermost/mattermost/server/v8@v9.1.5References
- https://nvd.nist.gov/vuln/detail/CVE-2024-1402[ADVISORY]
- https://github.com/mattermost/mattermost/commit/64cb0ca8af2dbda1afcddd1604460591a4799b81[WEB]
- https://github.com/mattermost/mattermost/commit/6d2440de9fd774b67e65e3aac4ab8b6ef9aba2d8[WEB]
- https://github.com/mattermost/mattermost/commit/81190e2da128a6985914ea7023a69ac400513fc4[WEB]
- https://github.com/mattermost/mattermost[PACKAGE]
- https://mattermost.com/security-updates[WEB]