{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank Davide Virruso of Yoroi for reporting this vulnerability."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the External RESTful Services (ERS) API of Cisco Identity Services Engine (ISE) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device.\r\n\r\nThis vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by persuading an authenticated administrator of the web-based management interface to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.\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 Cisco ISE Software if ERS was enabled.\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.\r\n  Determine Whether ERS is Enabled\r\nFor Cisco ISE releases 2.0 to 2.7, do the following:\r\n\r\nLog in to the Cisco ISE web management interface.\r\nChoose Administration \u003e System \u003e Settings.\r\nChoose ERS Settings.\r\nIf Enable ERS for Read/Write is selected, the device is vulnerable.\r\nIf Disable ERS is selected, the device is not vulnerable.\r\n\r\n\r\nFor Cisco ISE Release 3.0, do the following:\r\n\r\nLog in to the Cisco ISE web management interface.\r\nClick the menu icon.\r\nChoose Administration \u003e System \u003e Settings.\r\nChoose ERS Settings.\r\nIf Enable ERS for Read/Write is selected, the device is vulnerable.\r\nIf Disable ERS is selected, the device is not vulnerable.\r\n\r\n\r\nFor Cisco ISE releases 3.1 and 3.2, do the following:\r\n\r\nLog in to the Cisco ISE web management interface.\r\nClick the menu icon.\r\nChoose Administration \u003e System \u003e Settings.\r\nChoose API Settings.\r\nChoose the API Service Settings tab.\r\nIf ERS (Read/Write) is selected, the device is vulnerable.\r\nIf ERS (Read/Write) is not selected, the device is not vulnerable.",
        "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.",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability. However, administrators may disable the affected feature.\r\n\r\nTo disable ERS in Cisco ISE releases 2.0 to 2.7, do the following:\r\n\r\nLog in to the Cisco ISE web management interface.\r\nChoose Administration \u003e System \u003e Settings.\r\nChoose ERS Settings.\r\nClick the Disable ERS radio button.\r\n\r\nTo disable ERS in Cisco ISE Release 3.0, do the following:\r\n\r\nLog in to the Cisco ISE web management interface.\r\nClick the menu icon.\r\nChoose Administration \u003e System \u003e Settings.\r\nClick the Disable ERS radio button.\r\n\r\nTo disable ERS in Cisco ISE releases 3.1 and 3.2, do the following:\r\n\r\nLog in to the Cisco ISE web management interface.\r\nClick the menu icon.\r\nChoose Administration \u003e System \u003e Settings.\r\nChoose API Settings.\r\nChoose the API Service Settings tab.\r\nClick the ERS (Read/Write) toggle switch to deactivate it.\r\n\r\nWhile this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
        "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(s) 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 that is described in this advisory and which release included the fix for this vulnerability.\r\n        Cisco ISE Software Release  First Fixed Release          2.41 and earlier  Migrate to fixed release.      2.62  Migrate to fixed release.      2.7  2.7P8       3.0  3.0P7       3.1  3.1P4      3.2  3.2P1\r\n\r\n1. Cisco ISE Software Release 2.4 has reached End of Software Maintenance [\"https://www.cisco.com/c/en/us/products/eos-eol-listing.html\"]. Customers are advised to migrate to a supported release that includes the fix for this vulnerability.\r\n2. Hot patches for 2.6P12 are available by request. Contact Cisco TAC to make the request.\r\nFor instructions on upgrading your device, see the Upgrade Guides located on the Cisco Identity Service Engine [\"https://www.cisco.com/c/en/us/support/security/identity-services-engine/series.html\"] support page.\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 [\"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 aware that proof-of-concept exploit code is available for the vulnerability that is described in this advisory.\r\n\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "Cisco would like to thank Davide Virruso of Yoroi for reporting this vulnerability.",
        "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 Identity Services Engine Cross-Site Scripting Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xss-twLnpy3M"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.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": "End of Software Maintenance",
        "url": "https://www.cisco.com/c/en/us/products/eos-eol-listing.html"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;Identity Service Engine",
        "url": "https://www.cisco.com/c/en/us/support/security/identity-services-engine/series.html"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco Identity Services Engine Cross-Site Scripting Vulnerability",
    "tracking": {
      "current_release_date": "2023-03-31T21:09:40+00:00",
      "generator": {
        "date": "2024-05-10T23:19:46+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-ise-xss-twLnpy3M",
      "initial_release_date": "2022-10-19T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2022-10-19T15:33:49+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        },
        {
          "date": "2022-10-31T14:49:18+00:00",
          "number": "1.1.0",
          "summary": "Added mitigation information. Updated expected release date for 2.7P8."
        },
        {
          "date": "2022-11-14T20:04:46+00:00",
          "number": "1.2.0",
          "summary": "Updated hot patch information."
        },
        {
          "date": "2023-03-31T21:09:40+00:00",
          "number": "1.3.0",
          "summary": "Updated fixed release and hot patch information. Added that proof-of-concept code is now available."
        }
      ],
      "status": "final",
      "version": "1.3.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Identity Services Engine Software",
            "product": {
              "name": "Cisco Identity Services Engine Software ",
              "product_id": "CSAFPID-111903"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-20959",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCwc62413"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-111903"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-111903"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-111903"
          ]
        }
      ],
      "title": "Cisco Identity Services Engine Cross-Site Scripting Vulnerability"
    }
  ]
}