cisco-sa-20190813-bluetooth
Vulnerability from csaf_cisco
Published
2019-08-13 17:00
Modified
2019-08-21 14:14
Summary
Key Negotiation of Bluetooth Vulnerability

Notes

Summary
A weakness in the Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) protocol core specification exposes a vulnerability that could allow for an unauthenticated, adjacent attacker to perform a man-in-the-middle attack on an encrypted Bluetooth connection. The attack must be performed during negotiation or renegotiation of a paired device connection; existing sessions cannot be attacked. The issue could allow the attacker to reduce the entropy of the negotiated session key that is used to secure a Bluetooth connection between a paired device and a host device. An attacker who can successfully inject a malicious message into a Bluetooth connection during session negotiation or renegotiation could cause the strength of the session key to be susceptible to brute force attack. This advisory will be updated as additional information becomes available. There are no workarounds that address this vulnerability.
Affected Products
The Vulnerable Products ["#vp"] section includes Cisco bug IDs for each affected product. The bugs are accessible through the Cisco Bug Search Tool and contain additional platform-specific information, including workarounds (if available) and fixed software releases.
Vulnerable Products
The following table lists Cisco products that are affected by the vulnerability that is described in this advisory: Product Cisco Bug ID Cisco Collaboration Desk Endpoints Cisco Webex DX70 CSCvq80515 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80515"] Cisco Webex DX80 CSCvq80515 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80515"] Cisco IP Phones Cisco 8821 Wireless IP Phones CSCvq80441 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80441"] Cisco 8845 IP Phones CSCvq80433 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80433"] / CSCvq80432 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80432"] Cisco 8851 IP Phones CSCvq80439 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80439"] / CSCvq80431 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80431"] Cisco 8861 IP Phones CSCvq80439 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80439"] / CSCvq80431 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80431"] Cisco 8865 IP Phones CSCvq80433 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80433"] / CSCvq80432 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80432"] Cisco SPA525G2 Small Business IP Phones CSCvq80426 ["https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80426"]
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
For information about fixed software releases, consult the Cisco bug ID(s) that are at the top of this advisory and listed in the Vulnerable Products ["#vp"] section of this advisory. 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 and Alerts page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution. In 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.
Vulnerability Policy
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.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any malicious use of the vulnerability that is described in this advisory.
Source
Cisco would like to thank Daniele Antonioli, SUTD, Singapore; Dr. Nils Ole Tippenhauer, CISPA, Germany; and Prof. Kasper Rasmussen, University of Oxford, England, for reporting this issue.
Legal Disclaimer
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. CISCO EXPECTS TO UPDATE THIS DOCUMENT AS NEW INFORMATION BECOMES AVAILABLE. A 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.


To clipboard 

{
  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank Daniele Antonioli, SUTD, Singapore; Dr. Nils Ole Tippenhauer, CISPA, Germany; and Prof. Kasper Rasmussen, University of Oxford, England, for reporting this issue."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A weakness in the Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) protocol core specification exposes a vulnerability that could allow for an unauthenticated, adjacent attacker to perform a man-in-the-middle attack on an encrypted Bluetooth connection. The attack must be performed during negotiation or renegotiation of a paired device connection; existing sessions cannot be attacked.\r\n\r\nThe issue could allow the attacker to reduce the entropy of the negotiated session key that is used to secure a Bluetooth connection between a paired device and a host device.  An attacker who can successfully inject a malicious message into a Bluetooth connection during session negotiation or renegotiation could cause the strength of the session key to be susceptible to brute force attack.\r\n\r\nThis advisory will be updated as additional information becomes available. There are no workarounds that address this vulnerability.\r\n\r\n",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "The Vulnerable Products [\"#vp\"] section includes Cisco bug IDs for each affected product. The bugs are accessible through the Cisco Bug Search Tool and contain additional platform-specific information, including workarounds (if available) and fixed software releases.",
        "title": "Affected Products"
      },
      {
        "category": "general",
        "text": "The following table lists Cisco products that are affected by the vulnerability that is described in this advisory:\r\n                                Product\r\n              Cisco Bug ID\r\n                                               Cisco Collaboration Desk Endpoints                                   Cisco Webex DX70               CSCvq80515  [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80515\"]                                   Cisco Webex DX80               CSCvq80515  [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80515\"]                                   Cisco IP Phones                                   Cisco 8821 Wireless IP Phones               CSCvq80441 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80441\"]\r\n                                   Cisco 8845 IP Phones               CSCvq80433 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80433\"] / CSCvq80432 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80432\"]                                   Cisco 8851 IP Phones               CSCvq80439 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80439\"] / CSCvq80431 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80431\"]                                    Cisco 8861 IP Phones               CSCvq80439 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80439\"] / CSCvq80431 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80431\"]                                   Cisco 8865 IP Phones               CSCvq80433 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80433\"] / CSCvq80432 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80432\"]                                    Cisco SPA525G2 Small Business IP Phones               CSCvq80426 [\"https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80426\"]",
        "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.",
        "title": "Workarounds"
      },
      {
        "category": "general",
        "text": "For information about fixed software releases, consult the Cisco bug ID(s) that are at the top of this advisory and listed in the Vulnerable Products [\"#vp\"] section of this advisory.\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 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.",
        "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 malicious use of the vulnerability that is described in this advisory.",
        "title": "Exploitation and Public Announcements"
      },
      {
        "category": "general",
        "text": "Cisco would like to thank Daniele Antonioli, SUTD, Singapore; Dr. Nils Ole Tippenhauer, CISPA, Germany; and Prof. Kasper Rasmussen, University of Oxford, England, for reporting this issue.",
        "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. CISCO EXPECTS TO UPDATE THIS DOCUMENT AS NEW INFORMATION BECOMES AVAILABLE.\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": "Key Negotiation of Bluetooth Vulnerability",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190813-bluetooth"
      },
      {
        "category": "external",
        "summary": "Cisco Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "CSCvq80515",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80515"
      },
      {
        "category": "external",
        "summary": "CSCvq80441",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80441"
      },
      {
        "category": "external",
        "summary": "CSCvq80433",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80433"
      },
      {
        "category": "external",
        "summary": "CSCvq80432",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80432"
      },
      {
        "category": "external",
        "summary": "CSCvq80439",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80439"
      },
      {
        "category": "external",
        "summary": "CSCvq80431",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80431"
      },
      {
        "category": "external",
        "summary": "CSCvq80426",
        "url": "https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq80426"
      },
      {
        "category": "external",
        "summary": "considering software upgrades",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
      },
      {
        "category": "external",
        "summary": "Cisco Security Advisories and Alerts page",
        "url": "https://www.cisco.com/go/psirt"
      }
    ],
    "title": "Key Negotiation of Bluetooth Vulnerability",
    "tracking": {
      "current_release_date": "2019-08-21T14:14:09+00:00",
      "generator": {
        "date": "2024-05-10T22:48:09+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-20190813-bluetooth",
      "initial_release_date": "2019-08-13T17:00:00+00:00",
      "revision_history": [
        {
          "date": "2019-08-13T15:35:28+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        },
        {
          "date": "2019-08-21T14:14:09+00:00",
          "number": "1.1.0",
          "summary": "Correction to a Cisco bug ID in the advisory text."
        }
      ],
      "status": "interim",
      "version": "1.1.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco IP Phone 8800 Series Software",
            "product": {
              "name": "Cisco IP Phone 8800 Series Software ",
              "product_id": "CSAFPID-205455"
            }
          },
          {
            "category": "product_family",
            "name": "Cisco Small Business IP Phones",
            "product": {
              "name": "Cisco Small Business IP Phones ",
              "product_id": "CSAFPID-211649"
            }
          },
          {
            "category": "product_family",
            "name": "Cisco TelePresence CE Software",
            "product": {
              "name": "Cisco TelePresence CE Software ",
              "product_id": "CSAFPID-222445"
            }
          },
          {
            "category": "product_family",
            "name": "Cisco IP Phone 8800 Series with Multiplatform Firmware",
            "product": {
              "name": "Cisco IP Phone 8800 Series with Multiplatform Firmware ",
              "product_id": "CSAFPID-238624"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2019-9506",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvq80515"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvq80439"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvq80433"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvq80441"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvq80432"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvq80431"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvq80426"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-222445",
          "CSAFPID-205455",
          "CSAFPID-238624",
          "CSAFPID-211649"
        ]
      },
      "release_date": "2019-08-13T17:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-238624",
            "CSAFPID-205455",
            "CSAFPID-211649",
            "CSAFPID-222445"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-222445",
            "CSAFPID-205455",
            "CSAFPID-238624",
            "CSAFPID-211649"
          ]
        }
      ],
      "title": "Key Negotiation of Bluetooth Vulnerability"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.