var-202008-0626
Vulnerability from variot

Memory access out of buffer boundaries issues was discovered in Contiki-NG 4.4 through 4.5, in the SNMP BER encoder/decoder. The length of provided input/output buffers is insufficiently verified during the encoding and decoding of data. This may lead to out-of-bounds buffer read or write access in BER decoding and encoding functions. Contiki-NG There is an out-of-bounds read vulnerability and an out-of-bounds write vulnerability in.Information is obtained and service operation is interrupted (DoS) It may be put into a state. Contiki-NG is an open source cross-platform operating system for next-generation IoT (Internet of Things) devices. Contiki-NG version 4.4 to version 4.5 has a buffer error vulnerability. The vulnerability stems from the fact that when the network system or product performs operations on the memory, the data boundary is not correctly verified, resulting in incorrect read and write operations to other associated memory locations. Attackers can use this vulnerability to cause buffer overflow or heap overflow

Show details on source website


{
  "@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-202008-0626",
  "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": "contiki-ng",
        "scope": "gte",
        "trust": 1.0,
        "vendor": "contiki ng",
        "version": "4.4"
      },
      {
        "model": "contiki-ng",
        "scope": "lte",
        "trust": 1.0,
        "vendor": "contiki ng",
        "version": "4.5"
      },
      {
        "model": "contiki-ng",
        "scope": "eq",
        "trust": 0.8,
        "vendor": "contiki ng",
        "version": "4.4 \u304b\u3089 4.5"
      },
      {
        "model": "contiki-ng",
        "scope": "gte",
        "trust": 0.6,
        "vendor": "contiki ng",
        "version": "4.4,\u003c=4.5"
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-14937"
      }
    ]
  },
  "configurations": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/configurations#",
      "children": {
        "@container": "@list"
      },
      "cpe_match": {
        "@container": "@list"
      },
      "data": {
        "@container": "@list"
      },
      "nodes": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "4.5",
                "versionStartIncluding": "4.4",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2020-14937"
      }
    ]
  },
  "cve": "CVE-2020-14937",
  "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": [
          {
            "acInsufInfo": false,
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "author": "NVD",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.4,
            "confidentialityImpact": "PARTIAL",
            "exploitabilityScore": 10.0,
            "impactScore": 4.9,
            "integrityImpact": "NONE",
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "severity": "MEDIUM",
            "trust": 1.0,
            "userInteractionRequired": false,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
            "version": "2.0"
          },
          {
            "acInsufInfo": null,
            "accessComplexity": "Low",
            "accessVector": "Network",
            "authentication": "None",
            "author": "NVD",
            "availabilityImpact": "Partial",
            "baseScore": 6.4,
            "confidentialityImpact": "Partial",
            "exploitabilityScore": null,
            "id": "JVNDB-2020-010012",
            "impactScore": null,
            "integrityImpact": "None",
            "obtainAllPrivilege": null,
            "obtainOtherPrivilege": null,
            "obtainUserPrivilege": null,
            "severity": "Medium",
            "trust": 0.8,
            "userInteractionRequired": null,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
            "version": "2.0"
          },
          {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "author": "CNVD",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.4,
            "confidentialityImpact": "PARTIAL",
            "exploitabilityScore": 10.0,
            "id": "CNVD-2020-49535",
            "impactScore": 4.9,
            "integrityImpact": "NONE",
            "severity": "MEDIUM",
            "trust": 0.6,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
            "version": "2.0"
          }
        ],
        "cvssV3": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "author": "NVD",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "exploitabilityScore": 3.9,
            "impactScore": 5.2,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "trust": 1.0,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          {
            "attackComplexity": "Low",
            "attackVector": "Network",
            "author": "NVD",
            "availabilityImpact": "High",
            "baseScore": 9.1,
            "baseSeverity": "Critical",
            "confidentialityImpact": "High",
            "exploitabilityScore": null,
            "id": "JVNDB-2020-010012",
            "impactScore": null,
            "integrityImpact": "None",
            "privilegesRequired": "None",
            "scope": "Unchanged",
            "trust": 0.8,
            "userInteraction": "None",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.0"
          }
        ],
        "severity": [
          {
            "author": "NVD",
            "id": "CVE-2020-14937",
            "trust": 1.0,
            "value": "CRITICAL"
          },
          {
            "author": "NVD",
            "id": "JVNDB-2020-010012",
            "trust": 0.8,
            "value": "Critical"
          },
          {
            "author": "CNVD",
            "id": "CNVD-2020-49535",
            "trust": 0.6,
            "value": "MEDIUM"
          },
          {
            "author": "CNNVD",
            "id": "CNNVD-202008-926",
            "trust": 0.6,
            "value": "CRITICAL"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-14937"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ]
  },
  "description": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/description#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "Memory access out of buffer boundaries issues was discovered in Contiki-NG 4.4 through 4.5, in the SNMP BER encoder/decoder. The length of provided input/output buffers is insufficiently verified during the encoding and decoding of data. This may lead to out-of-bounds buffer read or write access in BER decoding and encoding functions. Contiki-NG There is an out-of-bounds read vulnerability and an out-of-bounds write vulnerability in.Information is obtained and service operation is interrupted (DoS) It may be put into a state. Contiki-NG is an open source cross-platform operating system for next-generation IoT (Internet of Things) devices. \nContiki-NG version 4.4 to version 4.5 has a buffer error vulnerability. The vulnerability stems from the fact that when the network system or product performs operations on the memory, the data boundary is not correctly verified, resulting in incorrect read and write operations to other associated memory locations. Attackers can use this vulnerability to cause buffer overflow or heap overflow",
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2020-14937"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ],
    "trust": 2.7
  },
  "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-2020-14937",
        "trust": 3.0
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012",
        "trust": 0.8
      },
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535",
        "trust": 0.6
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926",
        "trust": 0.6
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-14937"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ]
  },
  "id": "VAR-202008-0626",
  "iot": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/iot#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": true,
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      }
    ],
    "trust": 1.08177084
  },
  "iot_taxonomy": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/iot_taxonomy#",
      "data": {
        "@container": "@list"
      },
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": [
      {
        "category": [
          "IoT"
        ],
        "sub_category": null,
        "trust": 0.6
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      }
    ]
  },
  "last_update_date": "2023-12-18T12:42:49.737000Z",
  "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": "Out of bounds memory access in SNMP BER decoder/encoder routines #1354",
        "trust": 0.8,
        "url": "https://github.com/contiki-ng/contiki-ng/issues/1354"
      },
      {
        "title": "Patch for Contiki-NG buffer overflow vulnerability (CNVD-2020-49535)",
        "trust": 0.6,
        "url": "https://www.cnvd.org.cn/patchinfo/show/231817"
      },
      {
        "title": "Contiki-NG Buffer error vulnerability fix",
        "trust": 0.6,
        "url": "http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=126568"
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ]
  },
  "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-787",
        "trust": 1.8
      },
      {
        "problemtype": "CWE-125",
        "trust": 1.8
      }
    ],
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-14937"
      }
    ]
  },
  "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": 2.0,
        "url": "https://nvd.nist.gov/vuln/detail/cve-2020-14937"
      },
      {
        "trust": 1.6,
        "url": "https://drive.google.com/file/d/1makjbvznv5pmvwlojru0njh38zexpwui/view?usp=sharing"
      },
      {
        "trust": 1.6,
        "url": "https://github.com/contiki-ng/contiki-ng/issues/1354"
      },
      {
        "trust": 0.8,
        "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2020-14937"
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-14937"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ]
  },
  "sources": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "db": "NVD",
        "id": "CVE-2020-14937"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ]
  },
  "sources_release_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_release_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2020-08-26T00:00:00",
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "date": "2020-12-16T08:41:47",
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "date": "2020-08-18T16:15:13.713000",
        "db": "NVD",
        "id": "CVE-2020-14937"
      },
      {
        "date": "2020-08-18T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ]
  },
  "sources_update_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_update_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2020-08-31T00:00:00",
        "db": "CNVD",
        "id": "CNVD-2020-49535"
      },
      {
        "date": "2020-12-16T08:41:47",
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      },
      {
        "date": "2020-08-25T18:42:35.903000",
        "db": "NVD",
        "id": "CVE-2020-14937"
      },
      {
        "date": "2020-09-03T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ]
  },
  "threat_type": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/threat_type#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "remote",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ],
    "trust": 0.6
  },
  "title": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/title#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "Contiki-NG Out-of-bounds read vulnerability in",
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2020-010012"
      }
    ],
    "trust": 0.8
  },
  "type": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/type#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "buffer error",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-202008-926"
      }
    ],
    "trust": 0.6
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.