Vulnerability · Published Nov 6, 2023 · Assigned by Mattermost
CVE-2023-5969 Denial of Service via Link Preview in /api/v4/redirect_location
Medium 5.3
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 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.5%top 54.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Mattermost fails to properly sanitize the request to /api/v4/redirect_location allowing an attacker, sending a specially crafted request to /api/v4/redirect_location, to fill up the memory due to caching large items.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server/v6 | 7.8.12 | GHSA-w496-f5qq-m58j |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.4 | GHSA-w496-f5qq-m58j |
| Go | github.com/mattermost/mattermost/server/v8 | 8.1.3 | GHSA-w496-f5qq-m58j |
| Go | github.com/mattermost/mattermost/server/v8 | 9.0.1 | GHSA-w496-f5qq-m58j |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 0 – through 7.8.110 – through 8.0.30 – through 8.1.20 – through 9.0.0 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L