CVE-2017-18876 Information

Description

An issue was discovered in Mattermost Server before 4.3.0 4.2.1 and 4.1.2 when local storage for files is used. A System Admin can test for the existence of an arbitrary file.

CVSS Vector

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

Reference

https://mattermost.com/security-updates/

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

4.9