Common Weakness Enumeration

CWE-273

Allowed

Improper Check for Dropped Privileges

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The product attempts to drop privileges but does not check or incorrectly checks to see if the drop succeeded.

61 vulnerabilities reference this CWE, most recent first.

GHSA-XP9J-8P68-9Q93

Vulnerability from github – Published: 2024-04-05 09:30 – Updated: 2024-12-13 20:30

Summary

Mattermost Server Improper Access Control

Details

Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel

Severity

3.1 (Low)


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

2.3 (Low)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost/server/v8"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.1.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-21848"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-273",
      "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-04-05T17:03:58Z",
    "nvd_published_at": "2024-04-05T09:15:09Z",
    "severity": "LOW"
  },
  "details": "Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel\n\n",
  "id": "GHSA-xp9j-8p68-9q93",
  "modified": "2024-12-13T20:30:33Z",
  "published": "2024-04-05T09:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21848"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Mattermost Server Improper Access Control"
}

Mitigation MIT-46

Architecture and Design

Strategy: Separation of Privilege

Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

Mitigation MIT-53

Implementation

Check the results of all functions that return a value and verify that the value is expected.

Mitigation

Implementation

In Windows, make sure that the process token has the SeImpersonatePrivilege(Microsoft Server 2003). Code that relies on impersonation for security must ensure that the impersonation succeeded, i.e., that a proper privilege demotion happened.

No CAPEC attack patterns related to this CWE.

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