VAR-202010-1506

Vulnerability from variot - Updated: 2024-11-23 19:36

This issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15.6. A local user may be able to load unsigned kernel extensions. This vulnerability allows local attackers to escalate privileges on affected installations of Apple macOS. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.The specific flaw exists within the handling of kernel extensions in kextload. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute code in the context of the kernel. Apple macOS Catalina is a set of dedicated operating systems developed by Apple for Mac computers. Sandbox is one of the sandbox components. A security vulnerability exists in the Sandbox component of Apple macOS Catalina prior to 10.15.6. The vulnerability stems from the fact that the program does not properly lock objects before operating on them

Show details on source website
To clipboard 

{
  "@context": {
    "@vocab": "https://www.variotdbs.pl/ref/VARIoTentry#",
    "affected_products": {
      "@id": "https://www.variotdbs.pl/ref/affected_products"
    },
    "configurations": {
      "@id": "https://www.variotdbs.pl/ref/configurations"
    },
    "credits": {
      "@id": "https://www.variotdbs.pl/ref/credits"
    },
    "cvss": {
      "@id": "https://www.variotdbs.pl/ref/cvss/"
    },
    "description": {
      "@id": "https://www.variotdbs.pl/ref/description/"
    },
    "exploit_availability": {
      "@id": "https://www.variotdbs.pl/ref/exploit_availability/"
    },
    "external_ids": {
      "@id": "https://www.variotdbs.pl/ref/external_ids/"
    },
    "iot": {
      "@id": "https://www.variotdbs.pl/ref/iot/"
    },
    "iot_taxonomy": {
      "@id": "https://www.variotdbs.pl/ref/iot_taxonomy/"
    },
    "patch": {
      "@id": "https://www.variotdbs.pl/ref/patch/"
    },
    "problemtype_data": {
      "@id": "https://www.variotdbs.pl/ref/problemtype_data/"
    },
    "references": {
      "@id": "https://www.variotdbs.pl/ref/references/"
    },
    "sources": {
      "@id": "https://www.variotdbs.pl/ref/sources/"
    },
    "sources_release_date": {
      "@id": "https://www.variotdbs.pl/ref/sources_release_date/"
    },
    "sources_update_date": {
      "@id": "https://www.variotdbs.pl/ref/sources_update_date/"
    },
    "threat_type": {
      "@id": "https://www.variotdbs.pl/ref/threat_type/"
    },
    "title": {
      "@id": "https://www.variotdbs.pl/ref/title/"
    },
    "type": {
      "@id": "https://www.variotdbs.pl/ref/type/"
    }
  },
  "@id": "https://www.variotdbs.pl/vuln/VAR-202010-1506",
  "affected_products": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/affected_products#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        },
        "@id": "https://www.variotdbs.pl/ref/sources"
      }
    },
    "data": [
      {
        "model": "mac os x",
        "scope": "lt",
        "trust": 1.0,
        "vendor": "apple",
        "version": "10.15.6"
      },
      {
        "model": "apple mac os x",
        "scope": "eq",
        "trust": 0.8,
        "vendor": "\u30a2\u30c3\u30d7\u30eb",
        "version": null
      },
      {
        "model": "apple mac os x",
        "scope": "eq",
        "trust": 0.8,
        "vendor": "\u30a2\u30c3\u30d7\u30eb",
        "version": "10.15.5"
      },
      {
        "model": "macos",
        "scope": null,
        "trust": 0.7,
        "vendor": "apple",
        "version": null
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-9939"
      }
    ]
  },
  "credits": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/credits#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "@SSLab_Gatech (@jinmo123, @setuid0x0_, and @insu_yun_en)",
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-960"
      }
    ],
    "trust": 0.7
  },
  "cve": "CVE-2020-9939",
  "cvss": {
    "@context": {
      "cvssV2": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV2#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/cvssV2"
      },
      "cvssV3": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/cvss/cvssV3#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/cvssV3/"
      },
      "severity": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/cvss/severity#"
        },
        "@id": "https://www.variotdbs.pl/ref/cvss/severity"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        },
        "@id": "https://www.variotdbs.pl/ref/sources"
      }
    },
    "data": [
      {
        "cvssV2": [
          {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "author": "nvd@nist.gov",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.4,
            "confidentialityImpact": "PARTIAL",
            "exploitabilityScore": 3.4,
            "id": "CVE-2020-9939",
            "impactScore": 6.4,
            "integrityImpact": "PARTIAL",
            "severity": "MEDIUM",
            "trust": 1.9,
            "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "author": "VULHUB",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.4,
            "confidentialityImpact": "PARTIAL",
            "exploitabilityScore": 3.4,
            "id": "VHN-188064",
            "impactScore": 6.4,
            "integrityImpact": "PARTIAL",
            "severity": "MEDIUM",
            "trust": 0.1,
            "vectorString": "AV:L/AC:M/AU:N/C:P/I:P/A:P",
            "version": "2.0"
          }
        ],
        "cvssV3": [
          {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "author": "nvd@nist.gov",
            "availabilityImpact": "HIGH",
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "exploitabilityScore": 0.5,
            "id": "CVE-2020-9939",
            "impactScore": 5.9,
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "trust": 1.0,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          {
            "attackComplexity": "High",
            "attackVector": "Local",
            "author": "NVD",
            "availabilityImpact": "High",
            "baseScore": 6.4,
            "baseSeverity": "Medium",
            "confidentialityImpact": "High",
            "exploitabilityScore": null,
            "id": "CVE-2020-9939",
            "impactScore": null,
            "integrityImpact": "High",
            "privilegesRequired": "High",
            "scope": "Unchanged",
            "trust": 0.8,
            "userInteraction": "None",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "author": "ZDI",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "exploitabilityScore": 1.5,
            "id": "CVE-2020-9939",
            "impactScore": 6.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "trust": 0.7,
            "userInteraction": "NONE",
            "vectorString": "AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.0"
          }
        ],
        "severity": [
          {
            "author": "nvd@nist.gov",
            "id": "CVE-2020-9939",
            "trust": 1.0,
            "value": "MEDIUM"
          },
          {
            "author": "NVD",
            "id": "CVE-2020-9939",
            "trust": 0.8,
            "value": "Medium"
          },
          {
            "author": "ZDI",
            "id": "CVE-2020-9939",
            "trust": 0.7,
            "value": "HIGH"
          },
          {
            "author": "CNNVD",
            "id": "CNNVD-202008-348",
            "trust": 0.6,
            "value": "MEDIUM"
          },
          {
            "author": "VULHUB",
            "id": "VHN-188064",
            "trust": 0.1,
            "value": "MEDIUM"
          },
          {
            "author": "VULMON",
            "id": "CVE-2020-9939",
            "trust": 0.1,
            "value": "MEDIUM"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "db": "VULHUB",
        "id": "VHN-188064"
      },
      {
        "db": "VULMON",
        "id": "CVE-2020-9939"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-9939"
      }
    ]
  },
  "description": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/description#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "This issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15.6. A local user may be able to load unsigned kernel extensions. This vulnerability allows local attackers to escalate privileges on affected installations of Apple macOS. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.The specific flaw exists within the handling of kernel extensions in kextload. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute code in the context of the kernel. Apple macOS Catalina is a set of dedicated operating systems developed by Apple for Mac computers. Sandbox is one of the sandbox components. A security vulnerability exists in the Sandbox component of Apple macOS Catalina prior to 10.15.6. The vulnerability stems from the fact that the program does not properly lock objects before operating on them",
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2020-9939"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "db": "VULHUB",
        "id": "VHN-188064"
      },
      {
        "db": "VULMON",
        "id": "CVE-2020-9939"
      }
    ],
    "trust": 2.43
  },
  "external_ids": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/external_ids#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "db": "NVD",
        "id": "CVE-2020-9939",
        "trust": 3.3
      },
      {
        "db": "ZDI",
        "id": "ZDI-20-960",
        "trust": 1.3
      },
      {
        "db": "JVN",
        "id": "JVNVU94090210",
        "trust": 0.8
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700",
        "trust": 0.8
      },
      {
        "db": "ZDI_CAN",
        "id": "ZDI-CAN-10778",
        "trust": 0.7
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-348",
        "trust": 0.7
      },
      {
        "db": "NSFOCUS",
        "id": "50060",
        "trust": 0.6
      },
      {
        "db": "CNVD",
        "id": "CNVD-2020-49313",
        "trust": 0.1
      },
      {
        "db": "VULHUB",
        "id": "VHN-188064",
        "trust": 0.1
      },
      {
        "db": "VULMON",
        "id": "CVE-2020-9939",
        "trust": 0.1
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "db": "VULHUB",
        "id": "VHN-188064"
      },
      {
        "db": "VULMON",
        "id": "CVE-2020-9939"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-9939"
      }
    ]
  },
  "id": "VAR-202010-1506",
  "iot": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/iot#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": true,
    "sources": [
      {
        "db": "VULHUB",
        "id": "VHN-188064"
      }
    ],
    "trust": 0.01
  },
  "last_update_date": "2024-11-23T19:36:44.375000Z",
  "patch": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/patch#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "title": "HT211289 Apple\u00a0 Security update",
        "trust": 1.5,
        "url": "https://support.apple.com/en-us/HT211289"
      },
      {
        "title": "Apple macOS Catalina Sandbox Fixes for component security vulnerabilities",
        "trust": 0.6,
        "url": "http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=125889"
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      }
    ]
  },
  "problemtype_data": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/problemtype_data#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "problemtype": "CWE-367",
        "trust": 1.1
      },
      {
        "problemtype": "Time-of-check Time-of-use (TOCTOU) Race condition (CWE-367) [NVD Evaluation ]",
        "trust": 0.8
      }
    ],
    "sources": [
      {
        "db": "VULHUB",
        "id": "VHN-188064"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-9939"
      }
    ]
  },
  "references": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/references#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "trust": 1.8,
        "url": "https://support.apple.com/kb/ht211289"
      },
      {
        "trust": 1.4,
        "url": "https://nvd.nist.gov/vuln/detail/cve-2020-9939"
      },
      {
        "trust": 1.3,
        "url": "https://support.apple.com/en-us/ht211289"
      },
      {
        "trust": 0.8,
        "url": "http://jvn.jp/vu/jvnvu94090210/index.html"
      },
      {
        "trust": 0.6,
        "url": "http://www.nsfocus.net/vulndb/50060"
      },
      {
        "trust": 0.6,
        "url": "https://www.zerodayinitiative.com/advisories/zdi-20-960/"
      },
      {
        "trust": 0.1,
        "url": "https://cwe.mitre.org/data/definitions/367.html"
      },
      {
        "trust": 0.1,
        "url": "https://nvd.nist.gov"
      },
      {
        "trust": 0.1,
        "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/186449"
      }
    ],
    "sources": [
      {
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "db": "VULHUB",
        "id": "VHN-188064"
      },
      {
        "db": "VULMON",
        "id": "CVE-2020-9939"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-9939"
      }
    ]
  },
  "sources": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "db": "VULHUB",
        "id": "VHN-188064"
      },
      {
        "db": "VULMON",
        "id": "CVE-2020-9939"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-9939"
      }
    ]
  },
  "sources_release_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_release_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2020-08-10T00:00:00",
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "date": "2020-10-22T00:00:00",
        "db": "VULHUB",
        "id": "VHN-188064"
      },
      {
        "date": "2020-10-22T00:00:00",
        "db": "VULMON",
        "id": "CVE-2020-9939"
      },
      {
        "date": "2021-05-24T00:00:00",
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "date": "2020-08-10T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      },
      {
        "date": "2020-10-22T19:15:15.527000",
        "db": "NVD",
        "id": "CVE-2020-9939"
      }
    ]
  },
  "sources_update_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_update_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2021-06-29T00:00:00",
        "db": "ZDI",
        "id": "ZDI-20-960"
      },
      {
        "date": "2020-10-29T00:00:00",
        "db": "VULHUB",
        "id": "VHN-188064"
      },
      {
        "date": "2020-10-29T00:00:00",
        "db": "VULMON",
        "id": "CVE-2020-9939"
      },
      {
        "date": "2021-05-24T06:32:00",
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      },
      {
        "date": "2021-10-29T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      },
      {
        "date": "2024-11-21T05:41:33.870000",
        "db": "NVD",
        "id": "CVE-2020-9939"
      }
    ]
  },
  "threat_type": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/threat_type#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "local",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      }
    ],
    "trust": 0.6
  },
  "title": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/title#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "macOS\u00a0 Vulnerability in loading unsigned kernel extensions in",
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-012700"
      }
    ],
    "trust": 0.8
  },
  "type": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/type#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "other",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-348"
      }
    ],
    "trust": 0.6
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.