Mattermost version 7.1.x and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.
Published 2022-09-23 15:15:14
Updated 2022-09-26 22:23:15
View at NVD,   CVE.org
Vulnerability category: Denial of service

Products affected by CVE-2022-3257

Exploit prediction scoring system (EPSS) score for CVE-2022-3257

0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 33 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-3257

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.8
3.6
NIST
3.1
LOW CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
1.6
1.4
Mattermost, Inc.

CWE ids for CVE-2022-3257

  • The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
    Assigned by: responsibledisclosure@mattermost.com (Secondary)
  • The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-3257

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