{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Die Cisco ASA Appliance bietet Funktionen zur Sicherung von Anwendungssoftware, wie beispielsweise Firewall oder VPN.\r\nFirepower ist eine Firewall-Plattform von Cisco",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco ASA (Adaptive Security Appliance) und Cisco Firepower ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- CISCO Appliance",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2023-1397 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1397.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-1397 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-1397"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory vom 2023-06-08",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ssl-dos-uu7mV5p6"
      }
    ],
    "source_lang": "en-US",
    "title": "Cisco ASA (Adaptive Security Appliance): Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2023-06-08T22:00:00.000+00:00",
      "generator": {
        "date": "2024-02-15T17:30:20.150+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2023-1397",
      "initial_release_date": "2023-06-08T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-06-08T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Cisco ASA (Adaptive Security Appliance) 9.18.2",
                "product": {
                  "name": "Cisco ASA (Adaptive Security Appliance) 9.18.2",
                  "product_id": "T024497",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:cisco:adaptive_security_appliance:virtual__9.18.2"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Cisco ASA (Adaptive Security Appliance) 9.16.4",
                "product": {
                  "name": "Cisco ASA (Adaptive Security Appliance) 9.16.4",
                  "product_id": "T028014",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:cisco:adaptive_security_appliance:9.16.4"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Cisco ASA (Adaptive Security Appliance) 9.18.2.5",
                "product": {
                  "name": "Cisco ASA (Adaptive Security Appliance) 9.18.2.5",
                  "product_id": "T028015",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:cisco:adaptive_security_appliance:9.18.2.5"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "ASA (Adaptive Security Appliance)"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Cisco Firepower FTD 7.2.1",
                "product": {
                  "name": "Cisco Firepower FTD 7.2.1",
                  "product_id": "T028016",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cisco:firepower:ftd_7.2.1"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Cisco Firepower FTD 7.2.2",
                "product": {
                  "name": "Cisco Firepower FTD 7.2.2",
                  "product_id": "T028017",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cisco:firepower:ftd_7.2.2"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Cisco Firepower FTD 7.2.3",
                "product": {
                  "name": "Cisco Firepower FTD 7.2.3",
                  "product_id": "T028018",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:cisco:firepower:ftd_7.2.3"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Firepower"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-20006",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Cisco ASA (Adaptive Security Appliance) und Cisco Firepower. In der hardwarebasierten SSL/TLS-Verschl\u00fcsselungsfunktionalit\u00e4t besteht ein Implementierungsfehler in den kryptografischen Funktionen f\u00fcr die Verarbeitung von SSL/TLS-Datenverkehr. Ein entfernter, anonymer Angreifer kann diese Schwachstelle mithilfe eines manipulierten SSL/TLS-Datenstroms ausnutzen, um ein Neuladen des betroffenen Ger\u00e4tes und somit einen Denial of Service zu verursachen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T024497",
          "T028017",
          "T028018",
          "T028015",
          "T028016",
          "T028014"
        ]
      },
      "release_date": "2023-06-08T22:00:00Z",
      "title": "CVE-2023-20006"
    }
  ]
}

{
  "document": {
    "acknowledgments": [
      {
        "summary": "This vulnerability was found during the resolution of a Cisco TAC support case."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the hardware-based SSL/TLS cryptography functionality of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series Appliances could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to an implementation error within the cryptographic functions for SSL/TLS traffic processing when they are offloaded to the hardware. An attacker could exploit this vulnerability by sending a crafted stream of SSL/TLS traffic to an affected device. A successful exploit could allow the attacker to cause an unexpected error in the hardware-based cryptography engine, which could cause the device to reload.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects certain releases of Cisco ASA Software and Cisco FTD Software if they are running on Cisco Firepower 2100 Series Appliances that are configured for SSL/TLS, as shown in the following table:\r\n        Cisco Software  Affected Releases  Vulnerability Details          ASA  9.16.4\r\n9.18.2\r\n9.18.2.5  Any SSL/TLS connection that is terminated on the device could be used to exploit this vulnerability. This includes management traffic and any feature that terminates SSL/TLS traffic, such as Remote Access VPN.      FTD  7.2.1\r\n7.2.2\r\n7.2.3  The vulnerable feature set is limited to SSL Decrypt Policies and Remote Access VPN.\r\nFor more information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n\r\nDetermine Whether a Device Could Process SSL or TLS Messages\r\n\r\nTo determine whether Cisco Firepower 2100 Series Appliances that are running Cisco ASA Software or Cisco FTD Software could process SSL or TLS packets, use the show asp table socket | include SSL|DTLS command and verify that it returns output. When this command returns empty output, the device is not affected by this vulnerability. When this command returns output, the device is affected by this vulnerability, as shown in the following example:\r\n\r\n\r\nftd# show asp table socket | include SSL|DTLS\r\nSSL       0005aa68  LISTEN     x.x.x.x:443      0.0.0.0:*\r\nSSL       002d9e38  LISTEN     x.x.x.x:8443     0.0.0.0:*\r\nDTLS      0018f7a8  LISTEN     10.0.0.250:443   0.0.0.0:*",
        "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      Cisco ASA, FMC, and FTD Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco ASA, FMC, and FTD Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"]. This tool identifies any Cisco security advisories that impact a specific software release and the earliest release that fixes the vulnerabilities that are described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities that are described in all the advisories that the Software Checker identifies (\u201cCombined First Fixed\u201d).\r\n\r\nTo use the tool, go to the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] page and follow the instructions. Alternatively, use the following form to search for vulnerabilities that affect a specific software release. To use the form, follow these steps:\r\n\r\nChoose which advisories the tool will search\u2014all advisories, only advisories with a Critical or High Security Impact Rating (SIR) [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr\"], or only this advisory.\r\nChoose the appropriate software.\r\nChoose the appropriate platform.\r\nEnter a release number\u2014for example, 9.16.2.11 for Cisco ASA Software or 6.6.7 for Cisco FTD Software.\r\nClick Check.\r\n      Only this advisory  All Critical and High advisories  All advisories    Cisco ASA Software  Cisco FMC Software  Cisco FTD Software    Any Platform  3000 Series Industrial Security Appliances (ISA)  ASA 5500-X Series Firewalls  ASA Service Module  Adaptive Security Virtual Appliance (ASAv)  Firepower 1000 Series  Firepower 2100 Series  Firepower 4100 Series  Firepower 9000 Series  Firepower NGFW Virtual  Secure Firewall 3100 Series  Firepower Management Center Appliances\r\n\r\n\r\n\r\n    Additional Resources\r\nFor help determining the best Cisco ASA, FMC, or FTD 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.html\"]\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\"]",
        "title": "Fixed Software"
      },
      {
        "category": "general",
        "text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/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 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.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "This vulnerability was found during the resolution of a Cisco TAC support case.",
        "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": "psirt@cisco.com",
      "issuing_authority": "Cisco PSIRT",
      "name": "Cisco",
      "namespace": "https://wwww.cisco.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software for Firepower 2100 Series Appliances SSL/TLS Denial of Service Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ssl-dos-uu7mV5p6"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.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 Software Checker",
        "url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
      },
      {
        "category": "external",
        "summary": "Security Impact Rating (SIR)",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#asr"
      },
      {
        "category": "external",
        "summary": "Cisco ASA Compatibility",
        "url": "https://www.cisco.com/c/en/us/td/docs/security/asa/compatibility/asamatrx.html"
      },
      {
        "category": "external",
        "summary": "Cisco Secure Firewall ASA Upgrade Guide",
        "url": "https://www.cisco.com/c/en/us/td/docs/security/asa/upgrade/asa-upgrade/planning.html"
      },
      {
        "category": "external",
        "summary": "Cisco 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": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software for Firepower 2100 Series Appliances SSL/TLS Denial of Service Vulnerability",
    "tracking": {
      "current_release_date": "2023-06-07T16:00:00+00:00",
      "generator": {
        "date": "2024-01-19T01:50:02+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-asaftd-ssl-dos-uu7mV5p6",
      "initial_release_date": "2023-06-07T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2023-06-07T15:56:51+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": "9.16.4",
                    "product": {
                      "name": "9.16.4",
                      "product_id": "CSAFPID-290579"
                    }
                  }
                ],
                "category": "product_version",
                "name": "9.16"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "9.18.2",
                    "product": {
                      "name": "9.18.2",
                      "product_id": "CSAFPID-289282"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "9.18.2.5",
                    "product": {
                      "name": "9.18.2.5",
                      "product_id": "CSAFPID-290577"
                    }
                  }
                ],
                "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": "7.2.1",
                    "product": {
                      "name": "7.2.1",
                      "product_id": "CSAFPID-290563"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "7.2.2",
                    "product": {
                      "name": "7.2.2",
                      "product_id": "CSAFPID-292413"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "7.2.3",
                    "product": {
                      "name": "7.2.3",
                      "product_id": "CSAFPID-294794"
                    }
                  }
                ],
                "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 Firepower 2100 Series",
            "product": {
              "name": "Cisco Firepower 2100 Series",
              "product_id": "CSAFPID-277392"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ],
    "relationships": [
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.16.4 when installed on Cisco Firepower 2100 Series",
          "product_id": "CSAFPID-290579:277392"
        },
        "product_reference": "CSAFPID-290579",
        "relates_to_product_reference": "CSAFPID-277392"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.18.2 when installed on Cisco Firepower 2100 Series",
          "product_id": "CSAFPID-289282:277392"
        },
        "product_reference": "CSAFPID-289282",
        "relates_to_product_reference": "CSAFPID-277392"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Adaptive Security Appliance (ASA) Software 9.18.2.5 when installed on Cisco Firepower 2100 Series",
          "product_id": "CSAFPID-290577:277392"
        },
        "product_reference": "CSAFPID-290577",
        "relates_to_product_reference": "CSAFPID-277392"
      },
      {
        "category": "installed_on",
        "full_product_name": {
          "name": "Cisco Firepower Threat Defense Software 7.2.1 when installed on Cisco Firepower 2100 Series",
          "product_id": "CSAFPID-290563:277392"
        },
        "product_reference": "CSAFPID-290563",
        "relates_to_product_reference": "CSAFPID-277392"
      },
      {
        "category": "installed_on",
        "full_product_name": {
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          "title": "Affected Product Comprehensiveness"
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}

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