cisco-sa-20190925-ctspac-dos
Vulnerability from csaf_cisco
Published
2019-09-25 16:00
Modified
2019-09-25 16:00
Summary
Cisco IOS XE Software TrustSec Protected Access Credential Provisioning Denial of Service Vulnerability

Notes

Summary
A vulnerability in the Cisco TrustSec (CTS) Protected Access Credential (PAC) provisioning module of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of attributes in RADIUS messages. An attacker could exploit this vulnerability by sending a malicious RADIUS message to an affected device while the device is in a specific state. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Vulnerable Products
At the time of publication, this vulnerability affected Cisco devices that were running a vulnerable release of Cisco IOS XE Software with the CTS PAC Provisioning feature enabled. For more information about which Cisco IOS XE Software releases were vulnerable at the time of publication, see the Fixed Software ["#fs"] section of this advisory. Determine Whether CTS PAC Provisioning is Enabled To determine whether CTS PAC Provisioning is enabled, customers can use the show cts pacs CLI command. The following example shows the output of the show cts pacs command on a device that has CTS PAC Provisioning enabled: Switch# show cts pacs AID: 1100E046659D4275B644BF946EFA49CD PAC-Info: PAC-type = Cisco Trustsec . . .
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability. Cisco has confirmed that this vulnerability does not affect Cisco IOS Software, Cisco IOS XR Software, or Cisco NX-OS Software.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
For detailed information about affected and fixed software releases, consult the Cisco IOS Software Checker. 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. Cisco IOS and IOS XE Software To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides a tool, the Cisco IOS Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"], that identifies any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (“Combined First Fixed”). Customers can use this tool to perform the following tasks: Initiate a search by choosing one or more releases from a drop-down list or uploading a file from a local system for the tool to parse Enter the output of the show version command for the tool to parse Create a custom search by including all previously published Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication To determine whether a release is affected by any published Cisco Security Advisory, use the Cisco IOS Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] on Cisco.com or enter a Cisco IOS or IOS XE Software release—for example, 15.1(4)M2 or 3.13.8S—in the following field: By default, the Cisco IOS Software Checker includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, use the Cisco IOS Software Checker on Cisco.com and check the Medium check box in the Impact Rating drop-down list.
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 public announcements or malicious use of the vulnerability that is described in this advisory.
Source
This vulnerability was found during the resolution of a Cisco TAC support case.
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. 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.



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        "text": "A vulnerability in the Cisco TrustSec (CTS) Protected Access Credential (PAC) provisioning module of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition.\r\n\r\nThe vulnerability is due to improper validation of attributes in RADIUS messages. An attacker could exploit this vulnerability by sending a malicious RADIUS message to an affected device while the device is in a specific state.\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n",
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                  }
                ],
                "category": "product_version",
                "name": "16.9"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.10.1",
                    "product": {
                      "name": "16.10.1",
                      "product_id": "CSAFPID-225858"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1a",
                    "product": {
                      "name": "16.10.1a",
                      "product_id": "CSAFPID-250629"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1b",
                    "product": {
                      "name": "16.10.1b",
                      "product_id": "CSAFPID-252045"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1s",
                    "product": {
                      "name": "16.10.1s",
                      "product_id": "CSAFPID-252913"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1c",
                    "product": {
                      "name": "16.10.1c",
                      "product_id": "CSAFPID-254688"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1e",
                    "product": {
                      "name": "16.10.1e",
                      "product_id": "CSAFPID-257955"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1d",
                    "product": {
                      "name": "16.10.1d",
                      "product_id": "CSAFPID-258900"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.2",
                    "product": {
                      "name": "16.10.2",
                      "product_id": "CSAFPID-260917"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.10.1f",
                    "product": {
                      "name": "16.10.1f",
                      "product_id": "CSAFPID-262595"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.10"
              },
              {
                "branches": [
                  {
                    "category": "service_pack",
                    "name": "16.11.1",
                    "product": {
                      "name": "16.11.1",
                      "product_id": "CSAFPID-227918"
                    }
                  },
                  {
                    "category": "service_pack",
                    "name": "16.11.1a",
                    "product": {
                      "name": "16.11.1a",
                      "product_id": "CSAFPID-252271"
                    }
                  }
                ],
                "category": "product_version",
                "name": "16.11"
              }
            ],
            "category": "product_family",
            "name": "Cisco IOS XE Software"
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2019-12663",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvo79239"
        }
      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-213960",
          "CSAFPID-214051",
          "CSAFPID-217255",
          "CSAFPID-217256",
          "CSAFPID-217257",
          "CSAFPID-217259",
          "CSAFPID-218901",
          "CSAFPID-218903",
          "CSAFPID-218905",
          "CSAFPID-220802",
          "CSAFPID-222711",
          "CSAFPID-225784",
          "CSAFPID-225856",
          "CSAFPID-225858",
          "CSAFPID-226330",
          "CSAFPID-227918",
          "CSAFPID-228706",
          "CSAFPID-229124",
          "CSAFPID-229187",
          "CSAFPID-231187",
          "CSAFPID-231389",
          "CSAFPID-231390",
          "CSAFPID-231667",
          "CSAFPID-231682",
          "CSAFPID-232008",
          "CSAFPID-232461",
          "CSAFPID-232767",
          "CSAFPID-233155",
          "CSAFPID-235307",
          "CSAFPID-235858",
          "CSAFPID-236834",
          "CSAFPID-236837",
          "CSAFPID-237460",
          "CSAFPID-239264",
          "CSAFPID-241736",
          "CSAFPID-242308",
          "CSAFPID-242834",
          "CSAFPID-243362",
          "CSAFPID-244070",
          "CSAFPID-244071",
          "CSAFPID-244530",
          "CSAFPID-244900",
          "CSAFPID-245375",
          "CSAFPID-247629",
          "CSAFPID-248242",
          "CSAFPID-249171",
          "CSAFPID-250629",
          "CSAFPID-251075",
          "CSAFPID-251165",
          "CSAFPID-251166",
          "CSAFPID-252045",
          "CSAFPID-252235",
          "CSAFPID-252271",
          "CSAFPID-252272",
          "CSAFPID-252913",
          "CSAFPID-254688",
          "CSAFPID-257955",
          "CSAFPID-257984",
          "CSAFPID-258170",
          "CSAFPID-258229",
          "CSAFPID-258388",
          "CSAFPID-258900",
          "CSAFPID-260917",
          "CSAFPID-262595",
          "CSAFPID-263804",
          "CSAFPID-278780"
        ]
      },
      "release_date": "2019-09-25T16:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
            "CSAFPID-213960",
            "CSAFPID-214051",
            "CSAFPID-217255",
            "CSAFPID-217256",
            "CSAFPID-217257",
            "CSAFPID-217259",
            "CSAFPID-218901",
            "CSAFPID-218903",
            "CSAFPID-218905",
            "CSAFPID-220802",
            "CSAFPID-222711",
            "CSAFPID-225784",
            "CSAFPID-225856",
            "CSAFPID-225858",
            "CSAFPID-226330",
            "CSAFPID-227918",
            "CSAFPID-228706",
            "CSAFPID-229124",
            "CSAFPID-229187",
            "CSAFPID-231187",
            "CSAFPID-231389",
            "CSAFPID-231390",
            "CSAFPID-231667",
            "CSAFPID-231682",
            "CSAFPID-232008",
            "CSAFPID-232461",
            "CSAFPID-232767",
            "CSAFPID-233155",
            "CSAFPID-235307",
            "CSAFPID-235858",
            "CSAFPID-236834",
            "CSAFPID-236837",
            "CSAFPID-237460",
            "CSAFPID-239264",
            "CSAFPID-241736",
            "CSAFPID-242308",
            "CSAFPID-242834",
            "CSAFPID-243362",
            "CSAFPID-244070",
            "CSAFPID-244071",
            "CSAFPID-244530",
            "CSAFPID-244900",
            "CSAFPID-245375",
            "CSAFPID-247629",
            "CSAFPID-248242",
            "CSAFPID-249171",
            "CSAFPID-250629",
            "CSAFPID-251075",
            "CSAFPID-251165",
            "CSAFPID-251166",
            "CSAFPID-252045",
            "CSAFPID-252235",
            "CSAFPID-252271",
            "CSAFPID-252272",
            "CSAFPID-252913",
            "CSAFPID-254688",
            "CSAFPID-257955",
            "CSAFPID-257984",
            "CSAFPID-258170",
            "CSAFPID-258229",
            "CSAFPID-258388",
            "CSAFPID-258900",
            "CSAFPID-260917",
            "CSAFPID-262595",
            "CSAFPID-263804",
            "CSAFPID-278780"
          ],
          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-213960",
            "CSAFPID-214051",
            "CSAFPID-217255",
            "CSAFPID-217256",
            "CSAFPID-217257",
            "CSAFPID-217259",
            "CSAFPID-218901",
            "CSAFPID-218903",
            "CSAFPID-218905",
            "CSAFPID-220802",
            "CSAFPID-222711",
            "CSAFPID-225784",
            "CSAFPID-225856",
            "CSAFPID-225858",
            "CSAFPID-226330",
            "CSAFPID-227918",
            "CSAFPID-228706",
            "CSAFPID-229124",
            "CSAFPID-229187",
            "CSAFPID-231187",
            "CSAFPID-231389",
            "CSAFPID-231390",
            "CSAFPID-231667",
            "CSAFPID-231682",
            "CSAFPID-232008",
            "CSAFPID-232461",
            "CSAFPID-232767",
            "CSAFPID-233155",
            "CSAFPID-235307",
            "CSAFPID-235858",
            "CSAFPID-236834",
            "CSAFPID-236837",
            "CSAFPID-237460",
            "CSAFPID-239264",
            "CSAFPID-241736",
            "CSAFPID-242308",
            "CSAFPID-242834",
            "CSAFPID-243362",
            "CSAFPID-244070",
            "CSAFPID-244071",
            "CSAFPID-244530",
            "CSAFPID-244900",
            "CSAFPID-245375",
            "CSAFPID-247629",
            "CSAFPID-248242",
            "CSAFPID-249171",
            "CSAFPID-250629",
            "CSAFPID-251075",
            "CSAFPID-251165",
            "CSAFPID-251166",
            "CSAFPID-252045",
            "CSAFPID-252235",
            "CSAFPID-252271",
            "CSAFPID-252272",
            "CSAFPID-252913",
            "CSAFPID-254688",
            "CSAFPID-257955",
            "CSAFPID-257984",
            "CSAFPID-258170",
            "CSAFPID-258229",
            "CSAFPID-258388",
            "CSAFPID-258900",
            "CSAFPID-260917",
            "CSAFPID-262595",
            "CSAFPID-263804",
            "CSAFPID-278780"
          ]
        }
      ],
      "title": "Cisco IOS XE Software TrustSec Protected Access Credential Provisioning Denial of Service Vulnerability"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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