{
  "document": {
    "acknowledgments": [
      {
        "summary": "This vulnerability was found during internal security testing."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the secure boot implementation of Cisco Secure Firewalls 3100 Series that are running Cisco Adaptive Security Appliance (ASA) Software or Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated attacker with physical access to the device to bypass the secure boot functionality.\r\n\r\nThis vulnerability is due to a logic error in the boot process. An attacker could exploit this vulnerability by injecting malicious code into a specific memory location during the boot process of an affected device. A successful exploit could allow the attacker to execute persistent code at boot time and break the chain of trust.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the November 2022 release of the Cisco ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see Cisco Event Response: November 2022 Semiannual Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74838\"].",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects Cisco Secure Firewalls 3100 Series if they were running a release of Cisco ASA Software or Cisco FTD Software that includes a vulnerable firmware bundle version:\r\n\r\nIn Cisco ASA Software Release 9.17 and Cisco FTD Software Release 7.1, firmware bundle versions earlier than 1.0.22 are vulnerable.\r\nIn Cisco ASA Software Release 9.18 and Cisco FTD Software Release 7.2, firmware bundle versions earlier than 1.2.17 are vulnerable.\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n  Determine the Firmware Bundle Version\r\nTo determine which firmware bundle is running on a device, use the show version detail CLI command at the Cisco FXOS CLI and look for the line starting with Firmware-Vers. For information on how to log in to the Cisco FXOS CLI, see the Cisco FXOS Troubleshooting Guide for the Firepower 1000/2100 and Secure Firewall 3100 with Firepower Threat Defense [\"https://www.cisco.com/c/en/us/td/docs/security/firepower/2100/troubleshoot_fxos/b_2100_CLI_Troubleshoot/about_the_firepower_2100_security_appliance_cli.html\"].\r\n\r\nThe following example shows the output of the show version detail command on a device that is running firmware bundle release 1.2.15:\r\n\r\n\r\nfirepower# show version detail\r\n  Version: 7.2.0-82\r\n  Startup-Vers: 7.2.0-82\r\nMANAGER:\r\n    Boot Loader:\r\n        Firmware-Vers: 1.2.15\r\n        Rommon-Vers: 1.1.08\r\n        Fpga-Vers: 0.19.00\r\n        Fpga-Golden-Vers: 0.17.00\r\n        NpuFpga-Vers: 1024.37.00\r\n        TamFpga-Vers: 2.6.c\r\n        Power-Sequencer-Vers: 1.6\r\n      Firmware-Status: OK",
        "title": "Vulnerable Products"
      },
      {
        "category": "general",
        "text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect Cisco Firepower Management Center (FMC) Software.",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "Cisco has released free software updates [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu\"] that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.\r\n\r\nCustomers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nThe Cisco Support and Downloads page [\"https://www.cisco.com/c/en/us/support/index.html\"] on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n  Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n      Fixed Releases\r\nIn the following table(s), the left column lists Cisco software releases. The center column lists the firmware bundle version that includes the fix for the vulnerability that is described in this advisory. The right column lists the first software release that includes the fixed firmware bundle. Customers are advised to upgrade to an appropriate fixed software release [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] as indicated in this section.\r\n        Cisco ASA Software Release  First Fixed Firmware Bundle Version  First Fixed Release That Includes the Fixed Firmware Bundle          9.17  1.0.22   9.17.1.15      9.18  1.2.17  9.18.2\r\n         Cisco FTD Software Release  First Fixed Firmware Bundle Version  First Fixed Release That Includes the Fixed Firmware Bundle          7.1  1.0.22   7.1.0.2      7.2  1.2.17  7.2.1\r\nNote: When Cisco ASA Software or FTD Software is upgraded on a device, the firmware bundle version is also upgraded automatically. If the Cisco ASA Software or FTD Software is later downgraded, the firmware bundle version is not downgraded. Once the firmware bundle is upgraded to a fixed version, it will remain fixed, even if the Cisco ASA Software or FTD Software is downgraded.\r\n\r\nFor instructions on upgrading your FTD device, see Cisco Firepower Management Center Upgrade Guide [\"https://www.cisco.com/c/en/us/td/docs/security/firepower/upgrade/fpmc-upgrade-guide/getting_started.html\"].\r\n\r\n     Additional Resources\r\nFor help determining the best Cisco ASA, FTD, or FMC Software release, see the following Recommended Releases documents. If a security advisory recommends a later release, Cisco recommends following the advisory guidance.\r\n\r\nCisco ASA Compatibility [\"https://www.cisco.com/c/en/us/td/docs/security/asa/compatibility/asamatrx.html\"]\r\nCisco Secure Firewall ASA Upgrade Guide [\"(https:/www.cisco.com/c/en/us/td/docs/security/asa/upgrade/asa-upgrade/planning.htmlx\"]\r\nCisco Secure Firewall Threat Defense Compatibility Guide [\"https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/compatibility/threat-defense-compatibility.html\"]\r\n\r\nThe Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
        "title": "Vulnerability Policy"
      },
      {
        "category": "general",
        "text": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "This vulnerability was found during internal security testing.",
        "title": "Source"
      },
      {
        "category": "legal_disclaimer",
        "text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
        "title": "Legal Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "Emergency Support:\r\n+1 877 228 7302 (toll-free within North America)\r\n+1 408 525 6532 (International direct-dial)\r\nNon-emergency Support:\r\nEmail: psirt@cisco.com\r\nSupport requests that are received via e-mail are typically acknowledged within 48 hours.",
      "issuing_authority": "Cisco product security incident response is the responsibility of the Cisco Product Security Incident Response Team (PSIRT). The Cisco PSIRT is a dedicated, global team that manages the receipt, investigation, and public reporting of security vulnerability information that is related to Cisco products and networks. The on-call Cisco PSIRT works 24x7 with Cisco customers, independent security researchers, consultants, industry organizations, and other vendors to identify possible security issues with Cisco products and networks.\r\nMore information can be found in Cisco Security Vulnerability Policy available at https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco Secure Firewall 3100 Series Secure Boot Bypass Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fw3100-secure-boot-5M8mUh26"
      },
      {
        "category": "external",
        "summary": "Cisco Event Response: November 2022 Semiannual Cisco ASA, FMC, and FTD Software Security Advisory Bundled Publication",
        "url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74838"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;FXOS Troubleshooting Guide for the Firepower 1000/2100 and Secure Firewall 3100 with Firepower Threat Defense",
        "url": "https://www.cisco.com/c/en/us/td/docs/security/firepower/2100/troubleshoot_fxos/b_2100_CLI_Troubleshoot/about_the_firepower_2100_security_appliance_cli.html"
      },
      {
        "category": "external",
        "summary": "free software updates",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu"
      },
      {
        "category": "external",
        "summary": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html",
        "url": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;Support and Downloads page",
        "url": "https://www.cisco.com/c/en/us/support/index.html"
      },
      {
        "category": "external",
        "summary": "considering software upgrades",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;Security Advisories page",
        "url": "https://www.cisco.com/go/psirt"
      },
      {
        "category": "external",
        "summary": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html",
        "url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
      },
      {
        "category": "external",
        "summary": "Cisco Firepower Management Center Upgrade Guide",
        "url": "https://www.cisco.com/c/en/us/td/docs/security/firepower/upgrade/fpmc-upgrade-guide/getting_started.html"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;ASA Compatibility",
        "url": "https://www.cisco.com/c/en/us/td/docs/security/asa/compatibility/asamatrx.html"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;Secure Firewall Threat Defense Compatibility Guide",
        "url": "https://www.cisco.com/c/en/us/td/docs/security/secure-firewall/compatibility/threat-defense-compatibility.html"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco Secure Firewall 3100 Series Secure Boot Bypass Vulnerability",
    "tracking": {
      "current_release_date": "2022-11-09T16:00:00+00:00",
      "generator": {
        "date": "2022-11-09T20:48:25+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-fw3100-secure-boot-5M8mUh26",
      "initial_release_date": "2022-11-09T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2022-11-09T15:58:16+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "9.17.1",
                    "product": {
                      "name": "Cisco Adaptive Security Appliance (ASA) Software 9.17.1",
                      "product_id": "CSAFPID-285970"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "9.17.1.9",
                    "product": {
                      "name": "Cisco Adaptive Security Appliance (ASA) Software 9.17.1.9",
                      "product_id": "CSAFPID-286880"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "9.17.1.10",
                    "product": {
                      "name": "Cisco Adaptive Security Appliance (ASA) Software 9.17.1.10",
                      "product_id": "CSAFPID-287042"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "9.17.1.13",
                    "product": {
                      "name": "Cisco Adaptive Security Appliance (ASA) Software 9.17.1.13",
                      "product_id": "CSAFPID-289283"
                    }
                  }
                ],
                "category": "product_version",
                "name": "9.17"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "9.18.1",
                    "product": {
                      "name": "Cisco Adaptive Security Appliance (ASA) Software 9.18.1",
                      "product_id": "CSAFPID-287079"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "9.18.1.3",
                    "product": {
                      "name": "Cisco Adaptive Security Appliance (ASA) Software 9.18.1.3",
                      "product_id": "CSAFPID-287200"
                    }
                  }
                ],
                "category": "product_version",
                "name": "9.18"
              }
            ],
            "category": "product_family",
            "name": "Cisco Adaptive Security Appliance (ASA) Software"
          },
          {
            "category": "product_family",
            "name": "Cisco Adaptive Security Appliance (ASA) Software",
            "product": {
              "name": "Cisco Adaptive Security Appliance (ASA) Software ",
              "product_id": "CSAFPID-6588"
            }
          },
          {
            "branches": [
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "7.1.0",
                    "product": {
                      "name": "Cisco Firepower Threat Defense Software 7.1.0",
                      "product_id": "CSAFPID-286091"
                    }
                  }
                ],
                "category": "product_version",
                "name": "7.1"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "7.2.0",
                    "product": {
                      "name": "Cisco Firepower Threat Defense Software 7.2.0",
                      "product_id": "CSAFPID-287081"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "7.2.0.1",
                    "product": {
                      "name": "Cisco Firepower Threat Defense Software 7.2.0.1",
                      "product_id": "CSAFPID-290469"
                    }
                  }
                ],
                "category": "product_version",
                "name": "7.2"
              }
            ],
            "category": "product_family",
            "name": "Cisco Firepower Threat Defense Software"
          },
          {
            "category": "product_family",
            "name": "Cisco Firepower Threat Defense Software",
            "product": {
              "name": "Cisco Firepower Threat Defense Software ",
              "product_id": "CSAFPID-220203"
            }
          },
          {
            "category": "product_name",
            "name": "Cisco Secure Firewall 3100 Series",
            "product": {
              "name": "Cisco Secure Firewall 3100 Series",
              "product_id": "CSAFPID-286865"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.17.1 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-285970:286865"
        },
        "product_reference": "CSAFPID-285970",
        "relates_to_product_reference": "CSAFPID-286865"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.17.1.9 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-286880:286865"
        },
        "product_reference": "CSAFPID-286880",
        "relates_to_product_reference": "CSAFPID-286865"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.17.1.10 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-287042:286865"
        },
        "product_reference": "CSAFPID-287042",
        "relates_to_product_reference": "CSAFPID-286865"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.17.1.13 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-289283:286865"
        },
        "product_reference": "CSAFPID-289283",
        "relates_to_product_reference": "CSAFPID-286865"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.18.1 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-287079:286865"
        },
        "product_reference": "CSAFPID-287079",
        "relates_to_product_reference": "CSAFPID-286865"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.18.1.3 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-287200:286865"
        },
        "product_reference": "CSAFPID-287200",
        "relates_to_product_reference": "CSAFPID-286865"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Firepower Threat Defense Software 7.1.0 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-286091:286865"
        },
        "product_reference": "CSAFPID-286091",
        "relates_to_product_reference": "CSAFPID-286865"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Firepower Threat Defense Software 7.2.0 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-287081:286865"
        },
        "product_reference": "CSAFPID-287081",
        "relates_to_product_reference": "CSAFPID-286865"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Firepower Threat Defense Software 7.2.0.1 when installed on Cisco Secure Firewall 3100 Series",
          "product_id": "CSAFPID-290469:286865"
        },
        "product_reference": "CSAFPID-290469",
        "relates_to_product_reference": "CSAFPID-286865"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-20826",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwb08411"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-220203",
          "CSAFPID-286091:286865",
          "CSAFPID-287081:286865",
          "CSAFPID-290469:286865",
          "CSAFPID-285970:286865",
          "CSAFPID-286880:286865",
          "CSAFPID-287042:286865",
          "CSAFPID-287079:286865",
          "CSAFPID-287200:286865",
          "CSAFPID-289283:286865",
          "CSAFPID-6588"
        ]
      },
      "release_date": "2022-11-09T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-220203",
            "CSAFPID-286091:286865",
            "CSAFPID-287081:286865",
            "CSAFPID-290469:286865",
            "CSAFPID-285970:286865",
            "CSAFPID-286880:286865",
            "CSAFPID-287042:286865",
            "CSAFPID-287079:286865",
            "CSAFPID-287200:286865",
            "CSAFPID-289283:286865",
            "CSAFPID-6588"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-220203",
            "CSAFPID-286091:286865",
            "CSAFPID-287081:286865",
            "CSAFPID-290469:286865",
            "CSAFPID-285970:286865",
            "CSAFPID-286880:286865",
            "CSAFPID-287042:286865",
            "CSAFPID-287079:286865",
            "CSAFPID-287200:286865",
            "CSAFPID-289283:286865",
            "CSAFPID-6588"
          ]
        }
      ],
      "title": "Cisco Secure Firewall 3100 Series Secure Boot Bypass Vulnerability"
    }
  ]
}