Denial of Service via Opengraph Data Cache
CVE-2023-5330

7.5HIGH

Key Information:

Vendor
Mattermost
Status
Mattermost
Vendor
CVE Published:
9 October 2023

Summary

Mattermost contains a flaw that allows an attacker to exploit the caching mechanism for OpenGraph data. By sending specially crafted requests to the /api/v4/opengraph endpoint, an attacker can fill the cache with oversized entries. This can lead to server unavailability, disrupting service for legitimate users and potentially impacting overall system functionality.

Affected Version(s)

Mattermost 0 <= 7.8.10

Mattermost 0 <= 8.0.2

Mattermost 0 <= 8.1.1

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

vultza (vultza)
.