CVE-2023-40703 Denial of Service via specially crafted block fields in Mattermost Boards

2023-11-2709:08:31

CWE-400

Mattermost

www.cve.org

cve-2023-40703

mattermost

denial of service

crafted string

resource consumption

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

0.0005 Low

EPSS

Percentile

17.0%

JSON

Mattermost fails to properly limit the characters allowed in different fields of a block in Mattermost Boards allowing a attacker to consume excessive resources, possibly leading to Denial of Service, by patching the field of a block using a specially crafted string.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "7.8.12",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "8.1.3",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "9.0.1",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "9.1.0",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "9.1.1"
      },
      {
        "status": "unaffected",
        "version": "9.0.2"
      },
      {
        "status": "unaffected",
        "version": "7.8.13"
      },
      {
        "status": "unaffected",
        "version": "8.1.4"
      }
    ]
  }
]