CVE-2023-6547

2023-12-1209:15:09

CWE-284

[email protected]

web.nvd.nist.gov

mattermost

validation

team membership

playbook access

unauthorized modification

cve-2023-6547

nvd

5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

5.4 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

14.2%

JSON

Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team.

Affected configurations

NVD

Node

mattermostmattermost_serverRange≤8.1.5

mattermostmattermost_serverRange9.2.0–9.2.1

CPENameOperatorVersion
mattermost:mattermost_servermattermost mattermost serverle8.1.5
mattermost:mattermost_servermattermost mattermost serverle9.2.1

CPE	Name	Operator	Version
mattermost:mattermost_server	mattermost mattermost server	le	8.1.5
mattermost:mattermost_server	mattermost mattermost server	le	9.2.1

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "8.1.5",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "9.2.1",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "8.1.6"
      },
      {
        "status": "unaffected",
        "version": "9.2.2"
      }
    ]
  }
]