FKIE_CVE-2023-6208

Vulnerability from fkie_nvd - Published: 2023-11-21 15:15 - Updated: 2026-06-17 06:50
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard. *This bug only affects Firefox on X11. Other systems are unaffected.* 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=1855345Issue 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=1855345Issue 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": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*",
              "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
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "46D69DCC-AE4D-4EA5-861C-D60951444C6C",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When using X11, text selected by the page using the Selection API was erroneously copied into the primary selection, a temporary storage not unlike the clipboard.\n*This bug only affects Firefox on X11. Other systems are unaffected.* This vulnerability affects Firefox \u003c 120, Firefox ESR \u003c 115.5.0, and Thunderbird \u003c 115.5."
    },
    {
      "lang": "es",
      "value": "Al usar X11, el texto seleccionado por la p\u00e1gina usando la API de selecci\u00f3n se copiaba err\u00f3neamente en la selecci\u00f3n principal, un almacenamiento temporal similar al portapapeles. *Este error s\u00f3lo afecta a Thunderbird en X11. Otros sistemas no se ven afectados.* Esta vulnerabilidad afecta a Firefox \u0026lt; 120, Firefox \u0026lt; 115.5 y Thunderbird \u0026lt; 115.5.0."
    }
  ],
  "id": "CVE-2023-6208",
  "lastModified": "2026-06-17T06:50:18.283",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2023-11-21T15:15:07.900",
  "references": [
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      "source": "security@mozilla.org",
      "tags": [
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        "Permissions Required"
      ],
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1855345"
    },
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    },
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    },
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      "tags": [
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    },
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    },
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1855345"
    },
    {
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      "tags": [
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    },
    {
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      "url": "https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html"
    },
    {
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "Vendor Advisory"
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      "url": "https://www.mozilla.org/security/advisories/mfsa2023-49/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
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      "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": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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