CVE-2019-1736 (GCVE-0-2019-1736)

Vulnerability from cvelistv5 – Published: 2020-09-23 00:26 – Updated: 2024-11-13 18:05
VLAI
Title
Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability
Summary
A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.
Severity
6.2 (Medium)
CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-13 17:18 UTC
CWE
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 443 records in the last 180 days details
References
URL Tags
https://tools.cisco.com/security/center/content/C… vendor-advisoryx_refsource_CISCO
Impacted products
Vendor Product Version CPE status
Cisco Cisco Identity Services Engine Software Affected: n/a
guessed Create a notification for this product.
Date Public
2020-02-19 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T18:28:42.301Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "20200219 Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability",
            "tags": [
              "vendor-advisory",
              "x_refsource_CISCO",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2019-1736",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-13T17:18:03.065097Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-13T18:05:16.337Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco Identity Services Engine Software",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2020-02-19T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "CWE-347",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-09-23T00:26:09.000Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "20200219 Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability",
          "tags": [
            "vendor-advisory",
            "x_refsource_CISCO"
          ],
          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass"
        }
      ],
      "source": {
        "advisory": "cisco-sa-20200219-ucs-boot-bypass",
        "defect": [
          [
            "CSCvn09490",
            "CSCvq27796",
            "CSCvq27803"
          ]
        ],
        "discovery": "INTERNAL"
      },
      "title": "Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "psirt@cisco.com",
          "DATE_PUBLIC": "2020-02-19T16:00:00",
          "ID": "CVE-2019-1736",
          "STATE": "PUBLIC",
          "TITLE": "Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Cisco Identity Services Engine Software",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Cisco"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco."
            }
          ]
        },
        "exploit": [
          {
            "lang": "en",
            "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
          }
        ],
        "impact": {
          "cvss": {
            "baseScore": "6.2",
            "vectorString": "CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-347"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "20200219 Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability",
              "refsource": "CISCO",
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass"
            }
          ]
        },
        "source": {
          "advisory": "cisco-sa-20200219-ucs-boot-bypass",
          "defect": [
            [
              "CSCvn09490",
              "CSCvq27796",
              "CSCvq27803"
            ]
          ],
          "discovery": "INTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2019-1736",
    "datePublished": "2020-09-23T00:26:09.923Z",
    "dateReserved": "2018-12-06T00:00:00.000Z",
    "dateUpdated": "2024-11-13T18:05:16.337Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2019-1736",
      "date": "2026-10-29",
      "epss": "0.00247",
      "percentile": "0.15968"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:fmc1000-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A0E8EFE3-86C3-4BF1-BE42-8B551744CE8A",
                    "versionEndExcluding": "4.0.1f.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:fmc1000-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1433B697-00F9-4406-997D-E17423E029B0",
                    "versionEndExcluding": "4.0.2h",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:fmc2500-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "58ABEB14-1978-4153-8DEB-F7E3A4AC6CAA",
                    "versionEndExcluding": "4.0.1f.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:fmc2500-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "476C0A42-BB56-46F5-8072-714A5CB83414",
                    "versionEndExcluding": "4.0.2h",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:fmc4500-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "05FFE84E-B22E-4879-A278-8CA364DCB54F",
                    "versionEndExcluding": "4.0.1f.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:fmc4500-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "AC0E9F88-B684-48DC-BD8F-2A827F12D0A7",
                    "versionEndExcluding": "4.0.2h",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3515-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FE189663-69EE-4729-890B-EBA9D82555E4",
                    "versionEndExcluding": "4.0.2d",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3515-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9A507AB2-5532-4580-B5F4-DEDDFEFF6339",
                    "versionEndExcluding": "4.0.2h",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3595-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A8A8BA98-546F-40AC-91A5-4D8850BF5B38",
                    "versionEndExcluding": "4.0.2d",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3595-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5D6B2D1D-203A-4039-8D3F-8512316C68E7",
                    "versionEndExcluding": "4.0.2h",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3615-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "57E73F85-A9BD-49FF-89D2-55CB1843909A",
                    "versionEndExcluding": "4.0.1i",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3615-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E04D5924-66BA-461A-B9D3-69617FE21CD4",
                    "versionEndExcluding": "4.0.1g",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3655-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "82D4D357-CD06-40C0-B06E-715E0C006AC8",
                    "versionEndExcluding": "4.0.1i",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3655-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C69DA15A-B655-4C56-A902-2422BC9EC4D1",
                    "versionEndExcluding": "4.0.1g",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3695-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "090C0243-1592-4569-819E-DE3C141E5760",
                    "versionEndExcluding": "4.0.1i",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:sns-3695-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BC98E293-64B7-4B98-B456-B08A69D82664",
                    "versionEndExcluding": "4.0.1g",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:tg5004-k9_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A398C1C9-4A93-4003-8F0D-3F8AC5B7987D",
                    "versionEndExcluding": "4.0.2d",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:tg5004-k9_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "02522127-7119-4C28-B5E3-1B3B01D7D7D0",
                    "versionEndExcluding": "4.0.2h",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:cisco:tg5004-k9-rf_bios:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3085CB8E-7BAC-469C-B021-0E33169F8A50",
                    "versionEndExcluding": "4.0.2d",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:cisco:tg5004-k9-rf_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D4C580A0-E7A6-49B3-9F9B-7F0FB4922933",
                    "versionEndExcluding": "4.0.2h",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "AND"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:cisco:identity_services_engine:2.4\\(0.357\\):*:*:*:*:*:*:*",
                    "matchCriteriaId": "B60E8BB7-EAC5-4120-AFD0-5E72CCC97670",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:cisco:identity_services_engine:2.6\\(0.156\\):*:*:*:*:*:*:*",
                    "matchCriteriaId": "2DBAC90B-72AE-4B0B-92DC-D226F3AFD0F8",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:cisco:unified_computing_system:3.2\\(3h\\)c:*:*:*:*:*:*:*",
                    "matchCriteriaId": "94ACCB93-48B4-47D9-90BE-CB1A65994200",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco."
          },
          {
            "lang": "es",
            "value": "Una vulnerabilidad en el firmware de Cisco UCS C-Series Rack Servers, podr\u00eda permitir a un atacante f\u00edsico autenticado omitir las comprobaciones de validaci\u00f3n de Unified Extensible Firmware Interface (UEFI) Secure Boot y cargar una imagen de software comprometida en un dispositivo afectado.\u0026#xa0;La vulnerabilidad es debido a una comprobaci\u00f3n inapropiada de las im\u00e1genes de actualizaci\u00f3n del firmware del servidor.\u0026#xa0;Un atacante podr\u00eda explotar esta vulnerabilidad mediante la instalaci\u00f3n una versi\u00f3n de firmware del servidor que le permitir\u00eda deshabilitar el UEFI Secure Boot.\u0026#xa0;Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante omitir las comprobaciones de validaci\u00f3n de firmas que realiza la tecnolog\u00eda UEFI Secure Boot y cargar una imagen de software comprometida en el dispositivo afectado.\u0026#xa0;Una imagen de software comprometida es cualquier imagen de software que no haya sido firmada digitalmente por Cisco"
          }
        ],
        "id": "CVE-2019-1736",
        "lastModified": "2024-11-21T04:37:12.767",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 6.9,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 3.4,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "PHYSICAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.2,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 0.3,
              "impactScore": 5.9,
              "source": "psirt@cisco.com",
              "type": "Secondary"
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "PHYSICAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.6,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 0.7,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2020-09-23T01:15:14.300",
        "references": [
          {
            "source": "psirt@cisco.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass"
          }
        ],
        "sourceIdentifier": "psirt@cisco.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-347"
              }
            ],
            "source": "psirt@cisco.com",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-347"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-04T18:28:42.301Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "name": "20200219 Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability",
                "tags": [
                  "vendor-advisory",
                  "x_refsource_CISCO",
                  "x_transferred"
                ],
                "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2019-1736",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-11-13T17:18:03.065097Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-11-13T17:20:20.768Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "Cisco Identity Services Engine Software",
              "vendor": "Cisco",
              "versions": [
                {
                  "status": "affected",
                  "version": "n/a"
                }
              ]
            }
          ],
          "datePublic": "2020-02-19T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco."
            }
          ],
          "exploits": [
            {
              "lang": "en",
              "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
            }
          ],
          "metrics": [
            {
              "cvssV3_0": {
                "attackComplexity": "LOW",
                "attackVector": "PHYSICAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.2,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-347",
                  "description": "CWE-347",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2020-09-23T00:26:09.000Z",
            "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
            "shortName": "cisco"
          },
          "references": [
            {
              "name": "20200219 Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability",
              "tags": [
                "vendor-advisory",
                "x_refsource_CISCO"
              ],
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass"
            }
          ],
          "source": {
            "advisory": "cisco-sa-20200219-ucs-boot-bypass",
            "defect": [
              [
                "CSCvn09490",
                "CSCvq27796",
                "CSCvq27803"
              ]
            ],
            "discovery": "INTERNAL"
          },
          "title": "Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability",
          "x_legacyV4Record": {
            "CVE_data_meta": {
              "ASSIGNER": "psirt@cisco.com",
              "DATE_PUBLIC": "2020-02-19T16:00:00",
              "ID": "CVE-2019-1736",
              "STATE": "PUBLIC",
              "TITLE": "Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability"
            },
            "affects": {
              "vendor": {
                "vendor_data": [
                  {
                    "product": {
                      "product_data": [
                        {
                          "product_name": "Cisco Identity Services Engine Software",
                          "version": {
                            "version_data": [
                              {
                                "version_value": "n/a"
                              }
                            ]
                          }
                        }
                      ]
                    },
                    "vendor_name": "Cisco"
                  }
                ]
              }
            },
            "data_format": "MITRE",
            "data_type": "CVE",
            "data_version": "4.0",
            "description": {
              "description_data": [
                {
                  "lang": "eng",
                  "value": "A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco."
                }
              ]
            },
            "exploit": [
              {
                "lang": "en",
                "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
              }
            ],
            "impact": {
              "cvss": {
                "baseScore": "6.2",
                "vectorString": "CVSS:3.0/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.0"
              }
            },
            "problemtype": {
              "problemtype_data": [
                {
                  "description": [
                    {
                      "lang": "eng",
                      "value": "CWE-347"
                    }
                  ]
                }
              ]
            },
            "references": {
              "reference_data": [
                {
                  "name": "20200219 Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability",
                  "refsource": "CISCO",
                  "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass"
                }
              ]
            },
            "source": {
              "advisory": "cisco-sa-20200219-ucs-boot-bypass",
              "defect": [
                [
                  "CSCvn09490",
                  "CSCvq27796",
                  "CSCvq27803"
                ]
              ],
              "discovery": "INTERNAL"
            }
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "assignerShortName": "cisco",
        "cveId": "CVE-2019-1736",
        "datePublished": "2020-09-23T00:26:09.923Z",
        "dateReserved": "2018-12-06T00:00:00.000Z",
        "dateUpdated": "2024-11-13T18:05:16.337Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.