Description
Mattermost fails to properly validate the length of the emoji value in the custom user status, allowing an attacker to send multiple times a very long string as an emoji value causing high resource consumption and possibly crashing the server.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | ≤ 9.2.4, ≤ 8.1.8, ≤ 9.3.0 | 9.4.0 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | >= 9.2.0+incompatible, < 9.2.5+incompatible · >= 9.3.0+incompatible, < 9.3.1+incompatible | 9.2.5+incompatible, 9.3.1+incompatible | GO-2024-2589 |
| Go | github.com/mattermost/mattermost-server/v5 | all versions | — | GO-2024-2589 |
| Go | github.com/mattermost/mattermost-server/v6 | all versions | — | GO-2024-2589 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.3.0, < 9.3.1 | 9.3.1 | GHSA-6mx3-9qfh-77gj |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.2.0, < 9.2.5 | 9.2.5 | GHSA-6mx3-9qfh-77gj |
| Go | github.com/mattermost/mattermost/server/v8 | all versions | — | GO-2024-2589 |
Advisories 1
- WID-SEC-2024-0247 Mattermost: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Feb 28, 2024