FKIE_CVE-2023-6205

Vulnerability from fkie_nvd - Published: 2023-11-21 15:15 - Updated: 2026-06-17 06:50
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Summary
It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1854076Issue Tracking, Permissions Required
security@mozilla.orghttps://lists.debian.org/debian-lts-announce/2023/11/msg00017.htmlMailing List
security@mozilla.orghttps://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
security@mozilla.orghttps://www.debian.org/security/2023/dsa-5561Third Party Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-49/Release Notes, Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-50/Release Notes, Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-52/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1854076Issue Tracking, Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/11/msg00017.htmlMailing List
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5561Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2023-49/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2023-50/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2023-52/Release Notes, Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox_esr *
mozilla thunderbird *
debian debian_linux 10.0
debian debian_linux 11.0
debian debian_linux 12.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "120",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "115.5.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "115.5",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@mozilla.org"
    }
  ],
  "configurations": [
    {
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              "matchCriteriaId": "30F5F1B5-825D-4DC4-A6F0-ED5AD1B031F2",
              "versionEndExcluding": "120.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E2804F80-1F0A-4810-AAFF-57F113F5658D",
              "versionEndExcluding": "115.5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "92C55DCD-E2E9-46CA-B654-3B3E50A3DC6A",
              "versionEndExcluding": "115.5",
              "vulnerable": true
            }
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          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
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              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
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            },
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox \u003c 120, Firefox ESR \u003c 115.5.0, and Thunderbird \u003c 115.5."
    },
    {
      "lang": "es",
      "value": "Era posible provocar el uso de un MessagePort despu\u00e9s de que ya se hab\u00eda liberado, lo que podr\u00eda haber provocado un fallo explotable. Esta vulnerabilidad afecta a Firefox \u0026lt; 120, Firefox \u0026lt; 115.5 y Thunderbird \u0026lt; 115.5.0."
    }
  ],
  "id": "CVE-2023-6205",
  "lastModified": "2026-06-17T06:50:17.930",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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            {
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            {
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          "role": "CISA Coordinator",
          "timestamp": "2024-11-25T19:19:02.817205Z",
          "version": "2.0.3"
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  "published": "2023-11-21T15:15:07.737",
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    },
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    },
    {
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
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    {
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://www.mozilla.org/security/advisories/mfsa2023-52/"
    }
  ],
  "sourceIdentifier": "security@mozilla.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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