Vulnerability · Published Sep 29, 2023 · Assigned by Mattermost
CVE-2023-5196DoS via Channel Notification Properties
Medium 6.5
In plain English
A medium-severity uncontrolled resource consumption in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server/v6 | 7.8.10 | GHSA-33r7-wjfc-7w98 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.1.1 | GHSA-33r7-wjfc-7w98 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.2 | GHSA-33r7-wjfc-7w98 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 0 – through 7.8.98.1.00 – through 8.0.1 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H