Mend.io Vulnerability Database

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CVE-2022-3257

Date: September 23, 2022

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.

Language: Go

Severity Score

Related Resources (6)

https://hackerone.com/reports/1620170
https://mattermost.com/security-updates/
https://nvd.nist.gov/vuln/detail/CVE-2022-3257
https://github.com/mattermost/mattermost-server
https://mattermost.com/security-updates
https://www.mend.io/vulnerability-database/CVE-2022-3257

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

Unrestricted Upload of File with Dangerous Type

CWE-434

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

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