CVE-2023-2793 Stack exhaustion in PreparePostForClientWithEmbedsAndImages

2023-06-1609:02:34

CWE-400

Mattermost

www.cve.org

cve-2023-2793

mattermost

link validation

denial-of-service

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

0.001 Low

EPSS

Percentile

32.7%

JSON

Mattermost fails to validate links on external websites when constructing a preview for a linked website, allowing an attacker to cause a denial-of-service by a linking to a specially crafted webpage in a message.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "7.8.2",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "7.9.1",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "7.10.1"
      },
      {
        "status": "unaffected",
        "version": "7.8.3"
      },
      {
        "status": "unaffected",
        "version": "7.9.2"
      },
      {
        "status": "affected",
        "version": "7.10.0"
      }
    ]
  }
]