FKIE_CVE-2020-15678

Vulnerability from fkie_nvd - Published: 2020-10-01 19:15 - Updated: 2026-06-17 02:57
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 recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
References
security@mozilla.orghttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.htmlBroken Link, Mailing List, Third Party Advisory
security@mozilla.orghttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.htmlBroken Link, Mailing List, Third Party Advisory
security@mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=1660211Issue Tracking, Permissions Required, Vendor Advisory
security@mozilla.orghttps://lists.debian.org/debian-lts-announce/2020/10/msg00020.htmlMailing List, Third Party Advisory
security@mozilla.orghttps://security.gentoo.org/glsa/202010-02Third Party Advisory
security@mozilla.orghttps://www.debian.org/security/2020/dsa-4770Third Party Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-42/Release Notes, Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-43/Release Notes, Vendor Advisory
security@mozilla.orghttps://www.mozilla.org/security/advisories/mfsa2020-44/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00074.htmlBroken Link, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00077.htmlBroken Link, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.mozilla.org/show_bug.cgi?id=1660211Issue Tracking, Permissions Required, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2020/10/msg00020.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202010-02Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2020/dsa-4770Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-42/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-43/Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.mozilla.org/security/advisories/mfsa2020-44/Release Notes, Vendor Advisory
Impacted products
Vendor Product Version
mozilla firefox *
mozilla firefox_esr *
mozilla thunderbird *
opensuse leap 15.1
opensuse leap 15.2
debian debian_linux 9.0
debian debian_linux 10.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "81",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "78.3",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "78.3",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "security@mozilla.org"
    }
  ],
  "configurations": [
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              "matchCriteriaId": "B67E0CD3-E075-4CF0-A89D-F846E9F40AA4",
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          "operator": "OR"
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    },
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox \u003c 81, Thunderbird \u003c 78.3, and Firefox ESR \u003c 78.3."
    },
    {
      "lang": "es",
      "value": "Al volver a recorrer las capas gr\u00e1ficas mientras se desplaza, es posible que un iterador pueda convertirse en no v\u00e1lido, resultando en un potencial uso de la memoria previamente liberada.\u0026#xa0;Esto ocurre porque la funci\u00f3n APZCTreeManager::ComputeClippedCompositionBounds no sigui\u00f3 las reglas de invalidaci\u00f3n del iterador.\u0026#xa0;Esta vulnerabilidad afecta a Firefox versiones anteriores a 81, Thunderbird versiones anteriores a 78.3, y Firefox ESR versiones anteriores a 78.3"
    }
  ],
  "id": "CVE-2020-15678",
  "lastModified": "2026-06-17T02:57:02.200",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.6,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
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        "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"
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2020-10-01T19:15:13.893",
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  "vulnStatus": "Modified",
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          "value": "CWE-416"
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      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
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  • Patched: The vulnerability was observed as successfully patched 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.