CVE-2020-17437
Vulnerability from cvelistv5
Published
2020-12-11 22:24
Modified
2024-08-04 13:53
Severity ?
Summary
An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uip_process in uip.c.
References
cve@mitre.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdfPatch, Third Party Advisory
cve@mitre.orghttps://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party Advisory, US Government Resource
cve@mitre.orghttps://www.kb.cert.org/vuls/id/815128Third Party Advisory, US Government Resource
Impacted products
Vendor Product Version
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T13:53:17.554Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.kb.cert.org/vuls/id/815128"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2020-12-08T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uip_process in uip.c."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-09T14:06:21",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.kb.cert.org/vuls/id/815128"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-17437",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uip_process in uip.c."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.kb.cert.org/vuls/id/815128",
              "refsource": "MISC",
              "url": "https://www.kb.cert.org/vuls/id/815128"
            },
            {
              "name": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01",
              "refsource": "MISC",
              "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf",
              "refsource": "CONFIRM",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-17437",
    "datePublished": "2020-12-11T22:24:38",
    "dateReserved": "2020-08-07T00:00:00",
    "dateUpdated": "2024-08-04T13:53:17.554Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-17437\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-12-11T23:15:12.683\",\"lastModified\":\"2022-08-08T14:57:57.177\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uip_process in uip.c.\"},{\"lang\":\"es\",\"value\":\"Se detect\u00f3 un problema en uIP versi\u00f3n 1.0, como es usado en Contiki versi\u00f3n 3.0 y otros productos.\u0026#xa0;Cuando el flag Urgent es ajustado en un paquete TCP, y la pila est\u00e1 configurada para ignorar los datos urgentes, la pila intenta usar el valor de los bytes del puntero Urgent para separar los datos Urgent de los datos normales, al calcular el desplazamiento en el que los datos normales deben estar presentes en el b\u00fafer global.\u0026#xa0;Sin embargo, no se comprueba la longitud de este desplazamiento;\u0026#xa0;por lo tanto, para valores grandes de bytes de puntero Urgent, el puntero de datos puede apuntar a la memoria que est\u00e1 mucho m\u00e1s all\u00e1 del b\u00fafer de datos en la funci\u00f3n uip_process en el archivo uip.c\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":8.2,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":4.2}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:P\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\",\"baseScore\":6.4},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":4.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:uip_project:uip:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.0\",\"matchCriteriaId\":\"98518C5F-7D0A-4B03-A062-651E613A01BE\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"3.0\",\"matchCriteriaId\":\"EBD2BE71-F851-4136-816D-EF61154FD2C4\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:open-iscsi_project:open-iscsi:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.1.7\",\"matchCriteriaId\":\"81144F12-C2BC-4789-A010-E437BD1C2833\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_3va_com100_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.4.1\",\"matchCriteriaId\":\"507AAF60-4AFE-4D80-A698-13BD5818CAE7\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_3va_com100:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6C308EF6-7893-44EF-978E-9019B0060911\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_3va_com800_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.4.1\",\"matchCriteriaId\":\"08B3AAE7-AAC6-4ECC-9338-AC8841336C59\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_3va_com800:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7CECE258-D12A-4483-AF4B-A63FAD08A767\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_3va_dsp800_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.0\",\"matchCriteriaId\":\"2433BD7C-53EC-421E-A64F-B21F2C6A971E\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_3va_dsp800:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"08FA1D28-4B29-4318-B377-737A7F1CDF77\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_pac2200_clp_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"21817081-5AE8-4097-B835-BBDE1E7FC798\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_pac2200_clp:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"19DDE73C-D684-4987-B124-DD10E185459D\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_pac2200_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.2.2\",\"matchCriteriaId\":\"7A45625A-B498-4805-9B69-50099B7C96D2\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_pac2200:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D86E3742-4BCD-4425-B7C8-5C0311AEBDCE\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_pac3200_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.4.7\",\"matchCriteriaId\":\"92EDAF30-8EC2-4C76-BD27-6C6084B9CA03\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_pac3200:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"624451C4-149D-4FEE-B2FB-020574F03231\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_pac3200t_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.2.2\",\"matchCriteriaId\":\"AA4C0536-25FF-4A46-99D3-C40063EB5F93\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_pac3200t:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"11CE5687-8EEA-407F-BCE4-D1E6301F910C\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_pac3220_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.2.0\",\"matchCriteriaId\":\"9E106502-8480-496D-90BC-D2B5EADFC91C\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_pac3220:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"342EBD90-D831-4D99-97CA-13B8399EAD53\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:sentron_pac4200_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.3.0\",\"matchCriteriaId\":\"E46CC95C-7941-4B23-A0E9-79AB18A6E9C2\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:sentron_pac4200:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B48B5DE2-25BF-44A1-BB12-A734DD4A9560\"}]}]}],\"references\":[{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\",\"US Government Resource\"]},{\"url\":\"https://www.kb.cert.org/vuls/id/815128\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\",\"US Government Resource\"]}]}}"
  }
}


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 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.