Denial of Service via specially crafted block fields in Mattermost Boards
CVE-2023-40703

7.5HIGH

Key Information:

Vendor
Mattermost
Status
Mattermost
Vendor
CVE Published:
27 November 2023

Summary

The Mattermost Boards service has a vulnerability that allows an attacker to bypass character limitations in certain fields. By utilizing specially crafted strings, an attacker can exploit this flaw to consume excessive system resources, potentially leading to a Denial of Service scenario. This vulnerability emphasizes the need for proper input validation and resource management to prevent application disruptions.

Affected Version(s)

Mattermost 0 <= 7.8.12

Mattermost 0 <= 8.1.3

Mattermost 0 <= 9.0.1

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)
.