{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank security researchers Mikhail Klyuchnikov and Yury Aleynov from Positive Technologies for finding and reporting this vulnerability."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the ACS Report component of Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to execute arbitrary commands on an affected system. Commands executed by the attacker are processed at the targeted user\u0027s privilege level.\r\n\r\nThe vulnerability is due to insufficient validation of the Action Message Format (AMF) protocol. An attacker could exploit this vulnerability by sending a crafted AMF message that contains malicious code to a targeted user. A successful exploit could allow the attacker to execute arbitrary commands on the ACS device.\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 all releases of Cisco Secure ACS prior to Release 5.8 Patch 7. Administrators can use one of the following methods to determine which Cisco Secure ACS release is running on a device.\r\n\r\nCisco Secure ACS CLI\r\n\r\nThe show version command can be issued from the Cisco Secure ACS CLI. The following example shows the output of the show version command for a device that is running Cisco Secure ACS 5.8.0.32 with Cumulative Patch 1 installed:\r\n\r\n\r\nacs55/admin# show version\r\n\r\nCisco Application Deployment Engine OS Release: 2.2\r\nADE-OS Build Version: 2.2.2.013\r\nADE-OS System Architecture: x86_64\r\n\r\nCopyright (c) 2005-2015 by Cisco Systems, Inc.\r\nAll rights reserved.\r\nHostname: acsx5\r\n\r\nVersion information of installed applications\r\n---------------------------------------------\r\n\r\nCisco ACS VERSION INFORMATION\r\n-----------------------------\r\nVersion : 5.8.0.32\r\nInternal Build ID : B.442\r\nPatches :\r\n5-8-0-32-1\r\n\r\nacs55/admin#\r\n\r\nCisco Secure ACS Web-Based Interface\r\n\r\nTo determine which release of Cisco Secure ACS is running on a device, log in to the Cisco Secure ACS web-based interface and click the About link in the top right corner of the screen.",
        "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 the following Cisco Secure ACS products are not affected by this vulnerability:\r\n\r\nCisco Secure Access Control Server Express\r\nCisco Secure Access Control Server for Windows\r\nCisco Secure Access Control Server Solution Engine\r\nCisco Secure Access Control Server View",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "Cisco Secure ACS operates as a centralized RADIUS and TACACS+ server, combining user authentication, user and administrator device access control, and policy control into a centralized identity networking solution. Cisco Secure ACS provides central management of access policies for device administration and wireless, wired 802.1x, and remote VPN access scenarios. The identity stores can be internal or external. An internal identity store has user credential information stored in an internal database. With an external identity store, Cisco Secure ACS will retrieve information from an external database.\r\n\r\nNote: The Cisco Secure ACS product offering is no longer being sold after August 30, 2017. Customers may view the end-of-life notice [\"https://www.cisco.com/c/en/us/products/collateral/security/secure-access-control-system/eos-eol-c51-738197.html\"].",
        "title": "Details"
      },
      {
        "category": "general",
        "text": "There are no workarounds that address this vulnerability.",
        "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, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts 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\r\nCustomers Without Service Contracts\r\n\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:\r\nhttps://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\r\nFixed Releases\r\n\r\nThis vulnerability is fixed in Cisco Secure ACS Release 5.8.0.32 with Cumulative Patch 7 [\"https://software.cisco.com/download/release.html?mdfid=286286338\u0026flowid=83475\u0026softwareid=282766937\u0026release=5.8.0.32\u0026relind=AVAILABLE\u0026rellifecycle=\u0026reltype=latest\"]. The software can be downloaded from the Software Center [\"https://software.cisco.com/download/home\"] on Cisco.com by clicking Browse All and navigating to Security \u003e Network Visibility and Segmentation\u003e Secure Access Control System \u003e Secure Access Control System 5.8.",
        "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 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": "Cisco would like to thank security researchers Mikhail Klyuchnikov and Yury Aleynov from Positive Technologies for finding and 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 Secure Access Control System Remote Code Execution Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-acs1"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "end-of-life notice",
        "url": "https://www.cisco.com/c/en/us/products/collateral/security/secure-access-control-system/eos-eol-c51-738197.html"
      },
      {
        "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 Security Advisories and Alerts 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 Secure ACS Release 5.8.0.32 with Cumulative Patch 7",
        "url": "https://software.cisco.com/download/release.html?mdfid=286286338\u0026amp;flowid=83475\u0026amp;softwareid=282766937\u0026amp;release=5.8.0.32\u0026amp;relind=AVAILABLE\u0026amp;rellifecycle=\u0026amp;reltype=latest"
      },
      {
        "category": "external",
        "summary": "Software Center",
        "url": "https://software.cisco.com/download/home"
      }
    ],
    "title": "Cisco Secure Access Control System Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2018-05-02T16:00:00+00:00",
      "generator": {
        "date": "2024-05-10T22:45:48+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-20180502-acs1",
      "initial_release_date": "2018-05-02T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2018-05-02T14:52:40+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 Secure Access Control System (ACS)",
            "product": {
              "name": "Cisco Secure Access Control System (ACS) ",
              "product_id": "CSAFPID-2074"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-0253",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCve69037"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-2074"
        ]
      },
      "release_date": "2018-05-02T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-2074"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-2074"
          ]
        }
      ],
      "title": "Cisco Secure Access Control System Remote Code Execution Vulnerability"
    }
  ]
}