Detections
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Mattermost Server < 7.8.5 / 7.9.x < 7.9.4 Improper Authorization (MMSA-2023-00157)

critical Nessus Plugin ID 180410

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Synopsis

A web application running on the remote server is affected by an improper authorization vulnerability.

Description

The version of Mattermost Server running on the remote host is prior to 7.8.5 or 7.9.x prior to 7.9.4. It is, therefore, affected by an improper authorization vulnerability. Mattermost fails to invalidate existing authorization codes when deauthorizing an OAuth2 app, allowing an attacker possessing an authorization code to generate an access token.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Mattermost Server version 7.8.5, 7.9.4, 7.10.0 or later.

See Also

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

Plugin Details

Severity: Critical

ID: 180410

File Name: mattermost_server_mmsa-2023-00157.nasl

Version: 1.2

Type: remote

Family: CGI abuses

Published: 8/31/2023

Updated: 11/9/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2023-2193

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mattermost:mattermost_server

Required KB Items: installed_sw/Mattermost Server

Exploit Ease: No known exploits are available

Patch Publication Date: 5/17/2023

Vulnerability Publication Date: 4/20/2023

Reference Information

CVE: CVE-2023-2193

IAVA: 2023-A-0446-S