{
  "schema_version": "1.4.0",
  "id": "GHSA-m7w4-q5vg-5xfp",
  "modified": "2022-09-28T14:14:03Z",
  "published": "2022-09-25T00:00:21Z",
  "aliases": [
    "CVE-2022-3257"
  ],
  "summary": "Mattermost subject to Denial of Service via upload of special GIF",
  "details": "Mattermost version 7.1.x and earlier fails to sufficiently process a specifically crafted GIF file when it is uploaded while drafting a post, which allows authenticated users to cause resource exhaustion while processing the file, resulting in server-side Denial of Service.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/mattermost/mattermost-server/v6"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "7.1.0"
            },
            {
              "fixed": "7.2.0"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3257"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/1620170"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mattermost/mattermost-server"
    },
    {
      "type": "WEB",
      "url": "https://mattermost.com/security-updates"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-434"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2022-09-28T14:14:03Z",
    "nvd_published_at": "2022-09-23T15:15:00Z"
  }
}