cisco-sa-20200102-dcnm-xml-ext-entity
Vulnerability from csaf_cisco
Published
2020-01-02 16:00
Modified
2020-01-15 15:58
Summary
Cisco Data Center Network Manager XML External Entity Read Access Vulnerability

Notes

Summary
A vulnerability in the SOAP API of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to gain read access to information that is stored on an affected system. To exploit this vulnerability, an attacker would need administrative privileges on the DCNM application. The vulnerability exists because the SOAP API improperly handles XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by inserting malicious XML content in an API request. A successful exploit could allow the attacker to read arbitrary files from the affected device. Note: The severity of this vulnerability is aggravated by the vulnerabilities described in the Cisco Data Center Network Manager Authentication Bypass Vulnerabilities ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-auth-bypass"] advisory, published simultaneously with this one. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-xml-ext-entity ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-xml-ext-entity"]
Vulnerable Products
At the time of publication, this vulnerability affected Cisco DCNM software releases earlier than Release 11.3(1) for Microsoft Windows, Linux, and virtual appliance platforms. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
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
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. Fixed Releases At the time of publication, Cisco DCNM Software releases 11.3(1) and later contained the fix for this vulnerability. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. To download the software from the Software Center ["https://software.cisco.com/download/home"] on Cisco.com, do the following: Click Browse All. Choose Cloud and Systems Management > Data Center Infrastructure Management > Data Center Network Manager. Choose a release from the left pane of the Data Center Network Manager page.
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 aware that proof-of-concept exploit code is available for the vulnerability that is described in this advisory. Cisco PSIRT is not aware of any malicious use of the vulnerability that is described in this advisory.
Source
Cisco would like to thank Steven Seeley (mr_me) of Source Incite, working with Trend Micro’s Zero Day Initiative and iDefense, Accenture, for reporting this vulnerability.
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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  "document": {
    "acknowledgments": [
      {
        "summary": "Cisco would like to thank Steven Seeley (mr_me) of Source Incite, working with Trend Micro\u2019s Zero Day Initiative and iDefense, Accenture, for reporting this vulnerability."
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "notes": [
      {
        "category": "summary",
        "text": "A vulnerability in the SOAP API of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to gain read access to information that is stored on an affected system. To exploit this vulnerability, an attacker would need administrative privileges on the DCNM application.\r\n\r\nThe vulnerability exists because the SOAP API improperly handles XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by inserting malicious XML content in an API request. A successful exploit could allow the attacker to read arbitrary files from the affected device.\r\n\r\n\r\nNote: The severity of this vulnerability is aggravated by the vulnerabilities described in the Cisco Data Center Network Manager Authentication Bypass Vulnerabilities [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-auth-bypass\"] advisory, published simultaneously with this one.\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-20200102-dcnm-xml-ext-entity [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-xml-ext-entity\"]",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "At the time of publication, this vulnerability affected Cisco DCNM software releases earlier than Release 11.3(1) for Microsoft Windows, Linux, and virtual appliance platforms.\r\n\r\nSee the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.",
        "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": "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.\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 Fixed Releases\r\nAt the time of publication, Cisco DCNM Software releases 11.3(1) and later contained the fix for this vulnerability.\r\n\r\nSee the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.\r\n\r\nTo download the software from the Software Center [\"https://software.cisco.com/download/home\"] on Cisco.com, do the following:\r\n\r\nClick Browse All.\r\nChoose Cloud and Systems Management \u003e Data Center Infrastructure Management \u003e Data Center Network Manager.\r\nChoose a release from the left pane of the Data Center Network Manager page.",
        "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 aware that proof-of-concept exploit code is available for the vulnerability that is described in this advisory.\r\n\r\nCisco 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 Steven Seeley (mr_me) of Source Incite, working with Trend Micro\u2019s Zero Day Initiative and iDefense, Accenture, 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",
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    "references": [
      {
        "category": "self",
        "summary": "Cisco Data Center Network Manager XML External Entity Read Access Vulnerability",
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        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
      },
      {
        "category": "external",
        "summary": "Cisco\u0026nbsp;Data Center Network Manager Authentication Bypass Vulnerabilities",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-auth-bypass"
      },
      {
        "category": "external",
        "summary": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-xml-ext-entity",
        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200102-dcnm-xml-ext-entity"
      },
      {
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        "url": "https://software.cisco.com/download/home"
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        "summary": "Security Vulnerability Policy",
        "url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
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    ],
    "title": "Cisco Data Center Network Manager XML External Entity Read Access Vulnerability",
    "tracking": {
      "current_release_date": "2020-01-15T15:58:00+00:00",
      "generator": {
        "date": "2022-09-03T03:15:44+00:00",
        "engine": {
          "name": "TVCE"
        }
      },
      "id": "cisco-sa-20200102-dcnm-xml-ext-entity",
      "initial_release_date": "2020-01-02T16:00:00+00:00",
      "revision_history": [
        {
          "date": "2020-01-02T15:56:06+00:00",
          "number": "1.0.0",
          "summary": "Initial public release."
        },
        {
          "date": "2020-01-15T15:58:00+00:00",
          "number": "1.1.0",
          "summary": "Updated information about the availability of exploit code."
        }
      ],
      "status": "final",
      "version": "1.1.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_family",
            "name": "Cisco Data Center Network Manager",
            "product": {
              "name": "Cisco Data Center Network Manager ",
              "product_id": "CSAFPID-233075"
            }
          }
        ],
        "category": "vendor",
        "name": "Cisco"
      }
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2019-15983",
      "ids": [
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvr79188"
        },
        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvr88730"
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        {
          "system_name": "Cisco Bug ID",
          "text": "CSCvr88737"
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      ],
      "notes": [
        {
          "category": "other",
          "text": "Complete.",
          "title": "Affected Product Comprehensiveness"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-233075"
        ]
      },
      "release_date": "2020-01-02T16:00:00+00:00",
      "remediations": [
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          "details": "Cisco has released software updates that address this vulnerability.",
          "product_ids": [
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          "url": "https://software.cisco.com"
        }
      ],
      "scores": [
        {
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-233075"
          ]
        }
      ],
      "title": "Cisco Data Center Network Manager XML External Entity Read Access Vulnerability"
    }
  ]
}


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Sightings

Author Source Type Date

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.
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  • 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.