medium4.3
CVE-2024-1402
Mattermost vulnerable to denial of service via large number of emoji reactions
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost/server/v8 | < 8.1.8 | 8.1.8 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | through 8.1.7 from 9.0.0 through 9.1.4 from 9.2.0 through 9.2.3 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://mattermost.com/security-updates
- https://github.com/advisories/GHSA-32h7-7j94-8fc2
- https://nvd.nist.gov/vuln/detail/CVE-2024-1402
- https://github.com/mattermost/mattermost/commit/64cb0ca8af2dbda1afcddd1604460591a4799b81
- https://github.com/mattermost/mattermost/commit/6d2440de9fd774b67e65e3aac4ab8b6ef9aba2d8
- https://github.com/mattermost/mattermost/commit/81190e2da128a6985914ea7023a69ac400513fc4