FKIE_CVE-2023-5171

Vulnerability from fkie_nvd - Published: 2023-09-27 15:19 - Updated: 2026-06-17 06:47
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Summary
During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.
References
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1851599Issue Tracking, Permissions Required
security@mozilla.orghttps://lists.debian.org/debian-lts-announce/2023/09/msg00034.htmlMailing List, Patch, Third Party Advisory
security@mozilla.orghttps://lists.debian.org/debian-lts-announce/2023/10/msg00015.htmlMailing List, Third Party Advisory
security@mozilla.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AY642Z6JZODQJE7Z62CFREVUHEGCXGPD/Mailing List, Third Party Advisory
security@mozilla.orghttps://www.debian.org/security/2023/dsa-5506Patch, Third Party Advisory
security@mozilla.orghttps://www.debian.org/security/2023/dsa-5513Third Party Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-41/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-42/Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2023-43/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1851599Issue Tracking, Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/09/msg00034.htmlMailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/10/msg00015.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AY642Z6JZODQJE7Z62CFREVUHEGCXGPD/Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5506Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5513Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2023-41/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2023-42/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2023-43/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
fedoraproject fedora 39
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "118",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "115.3",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "115.3",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@mozilla.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
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              "matchCriteriaId": "2216A424-94E2-45E7-BB95-646BFC8182E1",
              "versionEndExcluding": "118",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EED826DF-6AB2-4D04-A4FC-A90EFDCB5EB9",
              "versionEndExcluding": "115.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3ED03DF1-442F-4750-84BF-8C37C606843A",
              "versionEndExcluding": "115.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
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              "vulnerable": true
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              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "During Ion compilation, a Garbage Collection could have resulted in a use-after-free condition, allowing an attacker to write two NUL bytes, and cause a potentially exploitable crash. This vulnerability affects Firefox \u003c 118, Firefox ESR \u003c 115.3, and Thunderbird \u003c 115.3."
    },
    {
      "lang": "es",
      "value": "Durante la compilaci\u00f3n de Ion, una Recolecci\u00f3n de Basura podr\u00eda haber resultado en una condici\u00f3n de use-after-free, lo que permitir\u00eda a un atacante escribir dos bytes NUL y provocar un bloqueo potencialmente explotable. Esta vulnerabilidad afecta a Firefox \u0026lt; 118, Firefox ESR \u0026lt; 115.3 y Thunderbird \u0026lt; 115.3."
    }
  ],
  "id": "CVE-2023-5171",
  "lastModified": "2026-06-17T06:47:42.753",
  "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"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-5171",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-23T19:24:47.238155Z",
          "version": "2.0.3"
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      }
    ]
  },
  "published": "2023-09-27T15:19:42.227",
  "references": [
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      "tags": [
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        "Permissions Required"
      ],
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    {
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  "vulnStatus": "Modified",
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          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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