CVE-2017-18894 Information

Description

An issue was discovered in Mattermost Server before 4.2.0 4.1.1 and 4.0.5 when used as an OAuth 2.0 service provider. Sometimes. resource-owner authorization is bypassed allowing account takeover.

CVSS Vector

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

Reference

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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

8.1