CVE-2022-3257 - CVE House
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Status published Low CVE-2022-3257

Server-side Denial of Service while processing a specifically crafted GIF file

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Thanks to Philippe Antoine (catenacyber) for contributing to this improvement under the Mattermost responsible disclosure policy.

References

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Affected Vendor

Affected Software

Mattermost
Vulnerable Versions:
unspecified

Timeline

Official Publish: September 23rd, 2022
Last Modified: December 6th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-400

MITRE ATT&CK TTPs

T1499 Endpoint Denial of Service
Impact
T1498 Network Denial of Service
Impact