CVE-2023-5196 DoS via Channel Notification Properties

2023-09-2909:22:36

CWE-400

Mattermost

www.cve.org

cve-2023-5196

denial of service

mattermost

notification properties

computing resources

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.0004 Low

EPSS

Percentile

13.3%

JSON

Mattermost fails to enforce character limits in all possible notification props allowing an attacker to send a really long value for a notification_prop resulting in the server consuming an abnormal quantity of computing resources and possibly becoming temporarily unavailable for its users.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "7.8.9",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "8.1.0"
      },
      {
        "lessThanOrEqual": "8.0.1",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "7.8.10"
      },
      {
        "status": "unaffected",
        "version": "8.1.1"
      },
      {
        "status": "unaffected",
        "version": "8.0.2"
      }
    ]
  }
]