{
  "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 external authentication functionality of Cisco Secure Email and Web Manager, formerly known as Cisco Security Management Appliance (SMA), and Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass authentication and log in to the web management interface of an affected device.\r\n\r\nThis vulnerability is due to improper authentication checks when an affected device uses Lightweight Directory Access Protocol (LDAP) for external authentication. An attacker could exploit this vulnerability by entering a specific input on the login page of the affected device. A successful exploit could allow the attacker to gain unauthorized access to the web-based management interface of the affected device.\r\n\r\nCisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.\r\n\r\nThis advisory is available at the following link:\r\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-esa-auth-bypass-66kEcxQD [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-esa-auth-bypass-66kEcxQD\"]",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects Cisco ESA and Cisco Secure Email and Web Manager, both virtual and hardware appliances, if they are running a vulnerable release of Cisco AsyncOS Software and the following are true:\r\n\r\nThe devices are configured to use external authentication.\r\nThe devices use LDAP as authentication protocol.\r\n\r\nNote: External authentication is disabled by default.\r\n  Determine Whether External Authentication is Enabled\r\nTo determine whether external authentication is enabled on a device, do the following:\r\n\r\nLog in to the web-based management interface of Cisco Secure Email and Web Manager or Cisco ESA.\r\nNavigate to System Administration \u003e Users.\r\nGo to the External Authentication section.\r\n\r\nIf the Enable External Authentication check box is checked in green, external authentication is enabled.",
        "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 also confirmed that this vulnerability does not affect Cisco Secure Web Appliance, formerly known as Cisco Web Security Appliance (WSA).",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "There is a workaround that addresses this vulnerability. Administrators can disable the anonymous binds on the external authentication server.\r\n\r\nNote: This action must be performed on the server that handles external authentication. Administrators should work with their networking teams to implement this workaround. The external authentication feature provided by the Cisco Secure devices should not be hindered by this workaround.\r\n\r\nWhile this workaround 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": "Cisco has released free software updates that address the vulnerability described in this advisory. Customers 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\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 right column indicates whether a release is affected by the vulnerability that is described in this advisory and the first release that includes the fix for this vulnerability. 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\r\nSecure Email and Web Manager: CSCvx88026 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvx88026\"]\r\n        Cisco AsyncOS Release    First Fixed Release          11 and earlier1  Migrate to a fixed release.      12  Migrate to a fixed release.      12.8  Migrate to a fixed release.      13.0  13.0.0-277      13.6  13.6.2-090      13.8  13.8.1-090      14.0  14.0.0-418      14.1  14.1.0-250\r\n1. Cisco AsyncOS Software releases earlier than Release 11 have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability.\r\n\r\nEmail Security Appliance: CSCvy13453 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvy13453\"]\r\n        Cisco AsyncOS Release    First Fixed Release          Earlier than 111  Migrate to a fixed release.      11  Migrate to a fixed release.      12  Migrate to a fixed release.      13  13.0.5-001      14  14.0.1-033\r\n1. Cisco AsyncOS Software releases earlier than Release 11 have reached end of software maintenance. Customers are advised to migrate to a supported release that includes the fix for this vulnerability.\r\n\r\nCisco Cloud Email Security (CES) includes Cisco ESA and Cisco Secure Email and Web Manager devices as part of the service solution. Cisco provides regular maintenance of the products included in this solution. Customers can also request a software upgrade by contacting Cisco CES support.\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 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": "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 Email Security Appliance and Cisco Secure Email and Web Manager External Authentication Bypass Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-esa-auth-bypass-66kEcxQD"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-esa-auth-bypass-66kEcxQD",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-esa-auth-bypass-66kEcxQD"
      },
      {
        "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": "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": "fixed software release",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "CSCvx88026",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvx88026"
      },
      {
        "category": "external",
        "summary": "CSCvy13453",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvy13453"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco Email Security Appliance and Cisco Secure Email and Web Manager External Authentication Bypass Vulnerability",
    "tracking": {
      "current_release_date": "2022-08-02T13:07:47+00:00",
      "generator": {
        "date": "2022-10-22T03:15:34+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-sma-esa-auth-bypass-66kEcxQD",
      "initial_release_date": "2022-06-15T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2022-06-15T15:38:20+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        },
        {
          "date": "2022-08-02T13:07:47+00:00",
          "number": "1.1.0",
          "summary": "Updated fixed release information."
        }
      ],
      "status": "final",
      "version": "1.1.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Email Security Appliance (ESA)",
            "product": {
              "name": "Cisco Email Security Appliance (ESA) ",
              "product_id": "CSAFPID-189790"
            }
          },
          {
            "category": "product_family",
            "name": "Cisco Content Security Management Appliance (SMA)",
            "product": {
              "name": "Cisco Content Security Management Appliance (SMA) ",
              "product_id": "CSAFPID-189791"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-20798",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvx88026"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvy13453"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-189791",
          "CSAFPID-189790"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-189791",
            "CSAFPID-189790"
          ],
          "url": "https://software.cisco.com"
        },
        {
          "category": "workaround",
          "details": "There is a workaround that addresses this vulnerability. Administrators can disable the anonymous binds on the external authentication server.\r\n\r\nNote: This action must be performed on the server that handles external authentication. Administrators should work with their networking teams to implement this workaround. The external authentication feature provided by the Cisco Secure devices should not be hindered by this workaround.\r\n\r\nWhile this workaround 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.",
          "product_ids": [
            "CSAFPID-189791",
            "CSAFPID-189790"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-189791",
            "CSAFPID-189790"
          ]
        }
      ],
      "title": "Cisco Email Security Appliance and Cisco Web Security Appliance Authentication Bypass Vulnerability"
    }
  ]
}