CVE-2023-2788 Deactivated user can retain access using oauth2 api

2023-06-1608:58:15

CWE-862

Mattermost

www.cve.org

cve-2023-2788

mattermost

admin privileges

oauth2

access token

deactivated user

6.2 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

LOW

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

0.001 Low

EPSS

Percentile

25.1%

JSON

Mattermost fails to check if an admin user account active after an oauth2 flow is started, allowing an attacker with admin privileges to retain persistent access to Mattermost by obtaining an oauth2 access token while the attacker’s account is deactivated.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "7.1.9",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "7.8.4",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "7.9.3",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "7.10.0"
      },
      {
        "status": "unaffected",
        "version": "7.1.10"
      },
      {
        "status": "unaffected",
        "version": "7.8.5"
      },
      {
        "status": "unaffected",
        "version": "7.9.4"
      },
      {
        "status": "unaffected",
        "version": "7.10.1"
      }
    ]
  }
]