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{
  "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 networking component of Cisco access point (AP) software could allow an unauthenticated, remote attacker to cause a temporary disruption of service.\r\n\r\nThis vulnerability is due to overuse of AP resources. An attacker could exploit this vulnerability by connecting to an AP on an affected device as a wireless client and sending a high rate of traffic over an extended period of time. A successful exploit could allow the attacker to cause the Datagram TLS (DTLS) session to tear down and reset, causing a denial of service (DoS) condition.\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": "At the time of publication, this vulnerability affected the following Cisco products if they were running a vulnerable release of Cisco Catalyst 9800 Wireless Controller Software:\r\n\r\nCatalyst 9124 APs\r\nCatalyst 9130 APs\r\nCatalyst 9136 APs\r\nCatalyst 9164 APs\r\nCatalyst 9166 APs\r\n\r\nFor information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software [\"#fs\"] section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.",
        "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 any Cisco AP series that is not listed in the Vulnerable Products [\"#vp\"] section of this advisory.",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "When 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      Fixed Releases\r\nAt the time of publication, the release information in the following table was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.\r\n\r\nThe left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability described in this advisory and which release included the fix for this vulnerability.\r\n\r\nThe process to upgrade an AP requires administrators to upgrade the wireless controller to which the AP is registered. Customers are advised to upgrade to an appropriate fixed software release as indicated in the following table.\r\n        Cisco Catalyst 9800 Wireless Controller Software Release  First Fixed Release           16.12 and earlier  Migrate to a fixed release.      17.6  17.6.6      17.7  Migrate to a fixed release.      17.8  Migrate to a fixed release.      17.9  Not vulnerable.\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 [\"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 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"
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    "references": [
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        "category": "self",
        "summary": "Cisco Catalyst 9100 Access Points Denial of Service Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-click-ap-dos-wdcXkvnQ"
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        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco Catalyst 9100 Access Points Denial of Service Vulnerability",
    "tracking": {
      "current_release_date": "2023-09-27T16:00:00+00:00",
      "generator": {
        "date": "2024-05-10T23:26:47+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-click-ap-dos-wdcXkvnQ",
      "initial_release_date": "2023-09-27T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2023-09-27T15:51:15+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Aironet Access Point Software",
            "product": {
              "name": "Cisco Aironet Access Point Software ",
              "product_id": "CSAFPID-190024"
            }
          },
          {
            "category": "product_family",
            "name": "Cisco Aironet Access Point Software (IOS XE Controller)",
            "product": {
              "name": "Cisco Aironet Access Point Software (IOS XE Controller) ",
              "product_id": "CSAFPID-280019"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-20176",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwb56120"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-190024",
          "CSAFPID-280019"
        ]
      },
      "release_date": "2023-09-27T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-190024",
            "CSAFPID-280019"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-190024",
            "CSAFPID-280019"
          ]
        }
      ],
      "title": "Cisco Aironet Access Points Denial of Service"
    }
  ]
}

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "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": "Catalyst ist der Markenname f\u00fcr eine Vielzahl von Netzwerk-Switches die von Cisco Systems verkauft werden.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Cisco Catalyst 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-2023-2493 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-2493.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2023-2493 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2023-2493"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisory CISCO-SA-CLICK-AP-DOS-WDCXKVNQ vom 2023-09-27",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-click-ap-dos-wdcXkvnQ"
      }
    ],
    "source_lang": "en-US",
    "title": "Cisco Catalyst: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2023-09-27T22:00:00.000+00:00",
      "generator": {
        "date": "2024-02-15T17:45:53.433+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2023-2493",
      "initial_release_date": "2023-09-27T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2023-09-27T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Cisco Catalyst \u003c 9800 Wireless Controller Software Release 17.6.6",
                "product": {
                  "name": "Cisco Catalyst \u003c 9800 Wireless Controller Software Release 17.6.6",
                  "product_id": "T030103",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:cisco:catalyst:9800_wireless_controller_software_release_17.6.6"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Cisco Catalyst \u003c 9800 Wireless Controller Software Release 17.9",
                "product": {
                  "name": "Cisco Catalyst \u003c 9800 Wireless Controller Software Release 17.9",
                  "product_id": "T030104",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:cisco:catalyst:9800_wireless_controller_software_release_17.9"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Catalyst"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-20176",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Cisco Catalyst. Diese ist auf einen Fehler beim Ressourcenverbrauch von APs zur\u00fcckzuf\u00fchren. Ein entfernter, authentisierter Angreifer kann diese Schwachstelle ausnutzen, um einen Denial of Service Zustand herbeizuf\u00fchren."
        }
      ],
      "release_date": "2023-09-27T22:00:00Z",
      "title": "CVE-2023-20176"
    }
  ]
}