{
  "id": "CVE-2023-2831",
  "sourceIdentifier": "responsibledisclosure@mattermost.com",
  "published": "2023-06-16T10:15:09.403",
  "lastModified": "2023-06-26T17:44:34.770",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mattermost fails to unescape Markdown strings in a memory-efficient way, allowing an attacker to cause a Denial of Service by sending a message containing a large number of escaped characters.\n"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      },
      {
        "source": "responsibledisclosure@mattermost.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    },
    {
      "source": "responsibledisclosure@mattermost.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "7.1.0",
              "versionEndIncluding": "7.1.9",
              "matchCriteriaId": "25CE0189-55BD-4A74-8844-59613D63A6FD"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "7.8.0",
              "versionEndIncluding": "7.8.4",
              "matchCriteriaId": "970C833F-3F25-43E1-B7AE-717BF35F998F"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "7.9.0",
              "versionEndIncluding": "7.9.3",
              "matchCriteriaId": "EB584691-CB58-4D9A-B475-4078ED1984F3"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:mattermost:mattermost:7.10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "980D0FB9-D2FF-4C31-BC92-07073A8F4BB3"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://mattermost.com/security-updates/",
      "source": "responsibledisclosure@mattermost.com",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}