VAR-201911-0591

Vulnerability from variot - Updated: 2023-12-18 13:23

Buffer overflows were discovered in the CoAP library in Arm Mbed OS 5.14.0. The CoAP parser is responsible for parsing received CoAP packets. The function sn_coap_parser_options_parse() parses CoAP input linearly using a while loop. Once an option is parsed in a loop, the current point (packet_data_pptr) is increased correspondingly. The pointer is restricted by the size of the received buffer, as well as by the 0xFF delimiter byte. Inside each while loop, the check of the value of packet_data_pptr is not strictly enforced. More specifically, inside a loop, packet_data_pptr could be increased and then dereferenced without checking. Moreover, there are many other functions in the format of sn_coap_parser_***() that do not check whether the pointer is within the bounds of the allocated buffer. All of these lead to heap-based or stack-based buffer overflows, depending on how the CoAP packet buffer is allocated. Arm Mbed OS Contains an out-of-bounds vulnerability.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. ARM Mbed OS is a set of open source embedded operating system dedicated to the Internet of Things of the British ARM company. CoAP library is one of the Constrained Application Protocol (CoAP) libraries. The vulnerability stems from the fact that when a network system or product performs an operation on memory, the data boundary is not correctly verified, resulting in an incorrect read and write operation to other associated memory locations. Attackers can use this vulnerability to cause buffer overflow or heap overflow. A remote attacker can use the specially crafted file to exploit this vulnerability to execute arbitrary code on the system

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-201911-0591",
  "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": "mbed os",
        "scope": "eq",
        "trust": 1.4,
        "vendor": "arm",
        "version": "5.14.0"
      },
      {
        "model": "mbed",
        "scope": "eq",
        "trust": 1.0,
        "vendor": "mbed",
        "version": "5.14.0"
      },
      {
        "model": "mbed",
        "scope": "eq",
        "trust": 1.0,
        "vendor": "mbed",
        "version": "5.13.2"
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "db": "NVD",
        "id": "CVE-2019-17212"
      }
    ]
  },
  "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:mbed:mbed:5.13.2:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:mbed:mbed:5.14.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2019-17212"
      }
    ]
  },
  "cve": "CVE-2019-17212",
  "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": "COMPLETE",
            "baseScore": 10.0,
            "confidentialityImpact": "COMPLETE",
            "exploitabilityScore": 10.0,
            "impactScore": 10.0,
            "integrityImpact": "COMPLETE",
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "severity": "HIGH",
            "trust": 1.0,
            "userInteractionRequired": false,
            "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          {
            "acInsufInfo": null,
            "accessComplexity": "Low",
            "accessVector": "Network",
            "authentication": "None",
            "author": "NVD",
            "availabilityImpact": "Complete",
            "baseScore": 10.0,
            "confidentialityImpact": "Complete",
            "exploitabilityScore": null,
            "id": "CVE-2019-17212",
            "impactScore": null,
            "integrityImpact": "Complete",
            "obtainAllPrivilege": null,
            "obtainOtherPrivilege": null,
            "obtainUserPrivilege": null,
            "severity": "High",
            "trust": 0.8,
            "userInteractionRequired": null,
            "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "author": "CNVD",
            "availabilityImpact": "COMPLETE",
            "baseScore": 10.0,
            "confidentialityImpact": "COMPLETE",
            "exploitabilityScore": 10.0,
            "id": "CNVD-2020-14204",
            "impactScore": 10.0,
            "integrityImpact": "COMPLETE",
            "severity": "HIGH",
            "trust": 0.6,
            "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          }
        ],
        "cvssV3": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "author": "NVD",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "exploitabilityScore": 3.9,
            "impactScore": 5.9,
            "integrityImpact": "HIGH",
            "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:H/A:H",
            "version": "3.1"
          },
          {
            "attackComplexity": "Low",
            "attackVector": "Network",
            "author": "NVD",
            "availabilityImpact": "High",
            "baseScore": 9.8,
            "baseSeverity": "Critical",
            "confidentialityImpact": "High",
            "exploitabilityScore": null,
            "id": "CVE-2019-17212",
            "impactScore": null,
            "integrityImpact": "High",
            "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:H/A:H",
            "version": "3.0"
          }
        ],
        "severity": [
          {
            "author": "NVD",
            "id": "CVE-2019-17212",
            "trust": 1.8,
            "value": "CRITICAL"
          },
          {
            "author": "CNVD",
            "id": "CNVD-2020-14204",
            "trust": 0.6,
            "value": "HIGH"
          },
          {
            "author": "CNNVD",
            "id": "CNNVD-201911-197",
            "trust": 0.6,
            "value": "CRITICAL"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "db": "NVD",
        "id": "CVE-2019-17212"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ]
  },
  "description": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/description#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "Buffer overflows were discovered in the CoAP library in Arm Mbed OS 5.14.0. The CoAP parser is responsible for parsing received CoAP packets. The function sn_coap_parser_options_parse() parses CoAP input linearly using a while loop. Once an option is parsed in a loop, the current point (*packet_data_pptr) is increased correspondingly. The pointer is restricted by the size of the received buffer, as well as by the 0xFF delimiter byte. Inside each while loop, the check of the value of *packet_data_pptr is not strictly enforced. More specifically, inside a loop, *packet_data_pptr could be increased and then dereferenced without checking. Moreover, there are many other functions in the format of sn_coap_parser_****() that do not check whether the pointer is within the bounds of the allocated buffer. All of these lead to heap-based or stack-based buffer overflows, depending on how the CoAP packet buffer is allocated. Arm Mbed OS Contains an out-of-bounds vulnerability.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. ARM Mbed OS is a set of open source embedded operating system dedicated to the Internet of Things of the British ARM company. CoAP library is one of the Constrained Application Protocol (CoAP) libraries. The vulnerability stems from the fact that when a network system or product performs an operation on memory, the data boundary is not correctly verified, resulting in an incorrect read and write operation to other associated memory locations. Attackers can use this vulnerability to cause buffer overflow or heap overflow. A remote attacker can use the specially crafted file to exploit this vulnerability to execute arbitrary code on the system",
    "sources": [
      {
        "db": "NVD",
        "id": "CVE-2019-17212"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ],
    "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-2019-17212",
        "trust": 3.0
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852",
        "trust": 0.8
      },
      {
        "db": "CNVD",
        "id": "CNVD-2020-14204",
        "trust": 0.6
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-201911-197",
        "trust": 0.6
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "db": "NVD",
        "id": "CVE-2019-17212"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ]
  },
  "id": "VAR-201911-0591",
  "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-2020-14204"
      }
    ],
    "trust": 1.3105263
  },
  "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-2020-14204"
      }
    ]
  },
  "last_update_date": "2023-12-18T13:23:30.535000Z",
  "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": "mbed-os/features/frameworks/mbed-coap/source/sn_coap_parser.c",
        "trust": 0.8,
        "url": "https://github.com/armmbed/mbed-os/blob/d91ed5fa42ea0f32e4422a3c562e7b045a17da40/features/frameworks/mbed-coap/source/sn_coap_parser.c#l257"
      },
      {
        "title": "memory acess out of range in MbedOS CoAP library parser part #11803",
        "trust": 0.8,
        "url": "https://github.com/armmbed/mbed-os/issues/11803"
      },
      {
        "title": "Patch for ARM Mbed OS CoAP library buffer overflow vulnerability",
        "trust": 0.6,
        "url": "https://www.cnvd.org.cn/patchinfo/show/204643"
      },
      {
        "title": "ARM Mbed OS CoAP library Buffer error vulnerability fix",
        "trust": 0.6,
        "url": "http://www.cnnvd.org.cn/web/xxk/bdxqbyid.tag?id=102485"
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ]
  },
  "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-129",
        "trust": 1.0
      }
    ],
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "db": "NVD",
        "id": "CVE-2019-17212"
      }
    ]
  },
  "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": 1.6,
        "url": "https://github.com/armmbed/mbed-os/blob/d91ed5fa42ea0f32e4422a3c562e7b045a17da40/features/frameworks/mbed-coap/source/sn_coap_parser.c#l257"
      },
      {
        "trust": 1.6,
        "url": "https://github.com/armmbed/mbed-os/blob/d91ed5fa42ea0f32e4422a3c562e7b045a17da40/features/frameworks/mbed-coap/source/sn_coap_parser.c#l301"
      },
      {
        "trust": 1.6,
        "url": "https://github.com/armmbed/mbed-os/blob/d91ed5fa42ea0f32e4422a3c562e7b045a17da40/features/frameworks/mbed-coap/source/sn_coap_parser.c#l310"
      },
      {
        "trust": 1.6,
        "url": "https://github.com/armmbed/mbed-os/blob/d91ed5fa42ea0f32e4422a3c562e7b045a17da40/features/frameworks/mbed-coap/source/sn_coap_parser.c#l313"
      },
      {
        "trust": 1.6,
        "url": "https://github.com/armmbed/mbed-os/blob/d91ed5fa42ea0f32e4422a3c562e7b045a17da40/features/frameworks/mbed-coap/source/sn_coap_parser.c#l331"
      },
      {
        "trust": 1.6,
        "url": "https://github.com/armmbed/mbed-os/blob/d91ed5fa42ea0f32e4422a3c562e7b045a17da40/features/frameworks/mbed-coap/source/sn_coap_parser.c#l660"
      },
      {
        "trust": 1.6,
        "url": "https://github.com/armmbed/mbed-os/issues/11803"
      },
      {
        "trust": 1.4,
        "url": "https://nvd.nist.gov/vuln/detail/cve-2019-17212"
      },
      {
        "trust": 0.8,
        "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2019-17212"
      },
      {
        "trust": 0.6,
        "url": "https://github.com/armmbed/mbed-os"
      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "db": "NVD",
        "id": "CVE-2019-17212"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ]
  },
  "sources": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "db": "NVD",
        "id": "CVE-2019-17212"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ]
  },
  "sources_release_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_release_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2020-02-25T00:00:00",
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "date": "2019-11-19T00:00:00",
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "date": "2019-11-05T15:15:12.060000",
        "db": "NVD",
        "id": "CVE-2019-17212"
      },
      {
        "date": "2019-11-05T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ]
  },
  "sources_update_date": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/sources_update_date#",
      "data": {
        "@container": "@list"
      }
    },
    "data": [
      {
        "date": "2020-02-27T00:00:00",
        "db": "CNVD",
        "id": "CNVD-2020-14204"
      },
      {
        "date": "2019-11-19T00:00:00",
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      },
      {
        "date": "2020-08-24T17:37:01.140000",
        "db": "NVD",
        "id": "CVE-2019-17212"
      },
      {
        "date": "2020-08-25T00:00:00",
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ]
  },
  "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-201911-197"
      }
    ],
    "trust": 0.6
  },
  "title": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/title#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "Arm Mbed OS Vulnerable to out-of-bounds writing",
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2019-011852"
      }
    ],
    "trust": 0.8
  },
  "type": {
    "@context": {
      "@vocab": "https://www.variotdbs.pl/ref/type#",
      "sources": {
        "@container": "@list",
        "@context": {
          "@vocab": "https://www.variotdbs.pl/ref/sources#"
        }
      }
    },
    "data": "input validation error",
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-201911-197"
      }
    ],
    "trust": 0.6
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.