{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank Marcin Kopec and Hans Christian Rudolph of Deutsche Telekom for reporting this vulnerability."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the development shell (devshell) authentication for Cisco Aironet Series Access Points (APs) running the Cisco AP-COS operating system could allow an authenticated, local attacker to access the development shell without proper authentication, which allows for root access to the underlying Linux OS. The attacker would need valid device credentials.\r\n\r\nThe vulnerability exists because the software improperly validates user-supplied input at the CLI authentication prompt for development shell access. An attacker could exploit this vulnerability by authenticating to the device and entering crafted input at the CLI. A successful exploit could allow the attacker to access the AP development shell without proper authentication, which allows for root access to the underlying Linux OS.\r\n\r\nCisco has released software updates that address this vulnerability. There are no 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-20190417-aironet-shell [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aironet-shell\"]",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "This vulnerability affects the following Cisco products if they are running a vulnerable software release:\r\n\r\nAironet 1540 Series APs1\r\nAironet 1560 Series APs2\r\nAironet 1800 Series APs3\r\nAironet 2800 Series APs\r\nAironet 3800 Series APs\r\n\r\n  1For Aironet 1540 Series APs, the first supported release is 8.5.103.0.\r\n2For Aironet 1560 Series APs, the first supported release is 8.3.111.0.\r\n3For Aironet 1800i APs, the first supported release is 8.5.103.0.\r\n\r\nFor information about which software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.\r\n  Determining the Aironet Series AP Software Release\r\nTo determine which version of Cisco Aironet Series AP Software is running on a device, administrators can use the controller web interface or the CLI.\r\n\r\nTo use the web interface, log in to the web interface, choose Management \u003e Software Update, and then refer to the release number that appears at the top of the page.\r\n\r\nTo use the CLI, issue the show version command and then refer to the value in the AP Running Image field of the command output. The following example shows the command output for a device running software version 8.3.102.0:\r\n\r\n\r\nAP# show version\r\n.  .  .  cisco AIR-AP3802E-B-K9 ARMv7 Processor rev 1 (v7l) with 1030528/668540K bytes of memory.  Processor board ID RFDPP1BS497  AP Running Image     : 8.3.102.0  Primary Boot Image   : 8.3.102.0  .  .  .\r\n    Determining the Cisco WLC Software Release\r\nTo determine which Cisco WLC Software release is running on a device, administrators can use the controller web interface or the CLI.\r\n\r\nTo use the web interface, do the following:\r\n\r\nBy using a browser, log in to the controller web interface.\r\nClick the Monitor tab.\r\nClick Summary in the left pane.\r\nUnder Controller Summary, the Software Version field shows the release number of the software that is currently running on the device.\r\n\r\nTo use the CLI, log in to the controller by using Telnet, issue the show sysinfo command, and then refer to the value in the Product Version field of the command output. The following example shows the command output for a device that is running Cisco WLC Software Release 8.3.102.0:\r\n\r\n\r\n(wlc)\u003e show sysinfo\r\n  Manufacturer\u0027s Name.............................. Cisco Systems Inc.  Product Name..................................... Cisco Controller  Product Version.................................. 8.3.102.0  Bootloader Version............................... 1.0.1\r\nField Recovery Image Version..................... 6.0.182.0  Firmware Version................................. FPGA 1.3, Env 1.6, USB console 1.27  Build Type....................................... DATA + WPS  .  .  .",
        "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 the following Cisco products:\r\n\r\nAironet 1520 Series APs\r\nAironet 1530 Series APs\r\nAironet 1550 Series APs\r\nAironet 1570 Series APs\r\nWireless Controllers\r\nWireless LAN Controllers (WLCs)\r\n\r\nIn addition, Cisco has confirmed that this vulnerability does not affect Cisco Aironet APs that are running Cisco Lightweight Access Point (LAP) Software or Cisco IOS Software.",
        "title": "Products Confirmed Not Vulnerable"
      },
      {
        "category": "general",
        "text": "Cisco Aironet APs running the Cisco AP-COS OS contain a debugging and troubleshooting mechanism known as devshell. This feature was designed to allow secure, controlled access to the underlying Linux OS and debugging information.\r\nThe devshell feature can provide information that is not accessible through existing show or debug commands. Cisco development engineers can request low-level information through this feature without having to update the software running on a device.  This can provide several advantages, such as allowing the collection of data without a reboot, which can lead to the loss of important values that indicate error state issues, delaying problem resolution.\r\n\r\nAccess to the devshell feature must be explicitly authorized by the customer; Cisco personnel cannot access this feature without customer consent. Once enabled, the devshell feature restricts access to the Linux shell to ensure that no changes are made to critical system files.",
        "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:  https://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  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\nCustomers should upgrade to an appropriate release [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"] as indicated in the table in this section. To help ensure a complete upgrade solution, consider that this advisory is part of a collection that includes the following advisories:\r\n\r\ncisco-sa-20190417-aironet-shell [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aironet-shell\"]: Cisco Aironet Series Access Points Development Shell Access Vulnerability\r\ncisco-sa-20190417-wlc-csrf [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-wlc-csrf\"]: Cisco Wireless LAN Controller Software Cross-Site Request Forgery Vulnerability\r\ncisco-sa-20190417-wlc-gui [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-wlc-gui\"]: Cisco Wireless LAN Controller Software GUI Configuration Denial of Service Vulnerabilities\r\n cisco-sa-20190417-wlc-iapp [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190417-wlc-iapp\"]: Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabilities\r\n\r\nIn the following table, the left column lists major Cisco software releases. The center column indicates whether a major release is affected by the vulnerability described in this advisory and the first minor release that includes the fix for this vulnerability. The right column indicates whether a major release is affected by all the vulnerabilities described in this collection of advisories and which release includes fixes for those vulnerabilities.\r\n                                Cisco Aironet AP Software Major Release              First Fixed Release for This Vulnerability              Recommended Release for All Vulnerabilities Described in the Collection of Advisories                                              Prior to 8.0\r\n              Not applicable\r\n              8.3.150.0\r\n                                  8.0              Not applicable               8.3.150.0\r\n                                  8.1              Not applicable              8.3.150.0                                   8.2              8.3.150.0              8.3.150.0\r\n                                  8.3              8.3.150.0              8.3.150.0                                   8.4              8.5.135.0              8.5.140.0\r\n                                  8.5              8.5.135.0              8.5.140.0                                  8.6              8.8.100.0              8.8.120.0                                  8.7              8.8.100.0              8.8.120.0                                  8.8              8.8.100.0               8.8.120.0                                  8.9              Not vulnerable              Not vulnerable",
        "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 Marcin Kopec and Hans Christian Rudolph of Deutsche Telekom 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": "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 Aironet Series Access Points Development Shell Access Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aironet-shell"
      },
      {
        "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-20190417-aironet-shell",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aironet-shell"
      },
      {
        "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": "upgrade to an appropriate release",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "cisco-sa-20190417-aironet-shell",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-aironet-shell"
      },
      {
        "category": "external",
        "summary": "cisco-sa-20190417-wlc-csrf",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-wlc-csrf"
      },
      {
        "category": "external",
        "summary": "cisco-sa-20190417-wlc-gui",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-wlc-gui"
      },
      {
        "category": "external",
        "summary": "Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      }
    ],
    "title": "Cisco Aironet Series Access Points Development Shell Access Vulnerability",
    "tracking": {
      "current_release_date": "2019-04-17T16:00:00+00:00",
      "generator": {
        "date": "2022-09-03T03:17:18+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-20190417-aironet-shell",
      "initial_release_date": "2019-04-17T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2019-04-17T13:44:21+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": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2019-1654",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvk42764"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-190024"
        ]
      },
      "release_date": "2019-04-17T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-190024"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-190024"
          ]
        }
      ],
      "title": "Cisco Aironet Series Access Points Development Shell Access Vulnerability"
    }
  ]
}