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CVE-2023-29539

Full vulnerability record from the local CVENow database.

Description

When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

Severity
HIGH
CVSS score
8.8 (v3.1)
Vulnerability status
Modified
Source identifier
Published
2023-06-02 17:15:12.607000
Last modified
2026-10-23 23:10:00.157000
View original CVE JSON
{
  "id": "CVE-2023-29539",
  "sourceIdentifier": "[email protected]",
  "published": "2023-06-02T17:15:12.607",
  "lastModified": "2026-10-23T23:10:00.157",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When handling the filename directive in the Content-Disposition header, the filename would be truncated if the filename contained a NULL character. This could have led to reflected file download attacks potentially tricking users to install malware. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10."
    },
    {
      "lang": "es",
      "value": "Al manejar la directiva filename en el encabezado Content-Disposition, el nombre de archivo se truncaría si el nombre de archivo contenía un carácter NULO. Esto podría haber llevado a ataques de descarga de archivos reflejados, engañando potencialmente a los usuarios para que instalaran malware. Esta vulnerabilidad afecta a Firefox < 112, Focus para Android < 112, Firefox ESR anterior a 102.10, Firefox para Android < 112 y Thunderbird anterior a 102.10."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Mozilla",
          "product": "Firefox",
          "versions": [
            {
              "version": "unspecified",
              "lessThan": "112",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Mozilla",
          "product": "Focus for Android",
          "versions": [
            {
              "version": "unspecified",
              "lessThan": "112",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Mozilla",
          "product": "Firefox ESR",
          "versions": [
            {
              "version": "unspecified",
              "lessThan": "102.10",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Mozilla",
          "product": "Firefox for Android",
          "versions": [
            {
              "version": "unspecified",
              "lessThan": "112",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Mozilla",
          "product": "Thunderbird",
          "versions": [
            {
              "version": "unspecified",
              "lessThan": "102.10",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2025-01-09T15:43:44.723086Z",
          "id": "CVE-2023-29539",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
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              "vulnerable": true,
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              "versionEndExcluding": "112.0",
              "matchCriteriaId": "8C6578F4-B46C-473F-8A17-CA6026C32FBE"
            },
            {
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              "criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "102.10",
              "matchCriteriaId": "03736567-251A-4F75-992E-AB7C957FB587"
            },
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            },
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            },
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  "references": [
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1784348",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking"
      ]
    },
    {
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      "source": "[email protected]",
      "tags": [
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    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2023-14/",
      "source": "[email protected]",
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      ]
    },
    {
      "url": "https://www.mozilla.org/security/advisories/mfsa2023-15/",
      "source": "[email protected]",
      "tags": [
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      ]
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1784348",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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  ]
}