{
  "document": {
    "acknowledgments": [
      {
        "organization": "OSIsoft",
        "summary": "reporting these vulnerabilities to CISA"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited",
      "tlp": {
        "label": "WHITE",
        "url": "https://us-cert.cisa.gov/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov",
        "title": "CISA Disclaimer"
      },
      {
        "category": "legal_disclaimer",
        "text": "All information products included in https://us-cert.cisa.gov/ics are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.",
        "title": "Legal Notice"
      },
      {
        "category": "summary",
        "text": "Successful exploitation of these vulnerabilities may allow direct attacks against the product and disclose sensitive information.",
        "title": "Risk evaluation"
      },
      {
        "category": "other",
        "text": "Chemical, Critical Manufacturing, Energy, Food and Agriculture, Government Facilities, Healthcare and Public Health, Information Technology, Metals and Mining, Water and Wastewater Systems",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "United States",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.\nCISA also provides a section for control systems security recommended practices on the ICS webpage onus-cert.gov. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage on us-cert.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.\nOrganizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "category": "other",
        "text": "No known public exploits specifically target these vulnerabilities. High skill level is needed to exploit.",
        "title": "Exploitability"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "Email: CISAservicedesk@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-19-225-02 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2019/icsa-19-225-02.json"
      },
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-19-225-02 Web Version",
        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-19-225-02"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.us-cert.gov/ics/alerts/ICS-ALERT-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B"
      }
    ],
    "title": "OSIsoft PI Web API",
    "tracking": {
      "current_release_date": "2019-08-13T00:00:00.000000Z",
      "generator": {
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
      },
      "id": "ICSA-19-225-02",
      "initial_release_date": "2019-08-13T00:00:00.000000Z",
      "revision_history": [
        {
          "date": "2019-08-13T00:00:00.000000Z",
          "legacy_version": "Initial",
          "number": "1",
          "summary": "ICSA-19-225-02 OSIsoft PI Web API"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c= 2018",
                "product": {
                  "name": "PI Web API: 2018 and prior",
                  "product_id": "CSAFPID-0001"
                }
              }
            ],
            "category": "product_name",
            "name": "PI Web API"
          }
        ],
        "category": "vendor",
        "name": "OSIsoft LLC"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2019-13515",
      "cwe": {
        "id": "CWE-532",
        "name": "Insertion of Sensitive Information into Log File"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Successful exploitation of this vulnerability may allow disclosure of sensitive information.CVE-2019-13515 has been assigned to this vulnerability. A CVSS v3 base score of 8.5 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-13515"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "OSIsoft recommends users upgrade to PI Web API 2018 SP1 or later to resolve these issues. To download PI Web API 2018 SP1, please access the OSIsoft customer portal (login required).",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "To avoid exposing sensitive information in the PI Web API Application Debug log, ensure that the Debug log is disabled on the Windows machine running PI Web API. Follow these steps to disable the Debug log: 1.    Open Command Prompt and run the command eventvwr.msc. 2.    Navigate to View \u003e Show Analytic and Debug Logs. 3.    Under Applications and Services Logs, find the PIWebAPI folder. 4.    Right click on the log entitled Debug, and click Disable Log.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Also be sure to clear existing entries in the Debug log.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Assuming the log is Disabled but contains Events (e.g., after a troubleshooting session), enable the log and then disable it immediately.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "If the log is already enabled, disable it, enable it, and finally disable it again to wipe out the contents.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "The CSRF defense is enabled by default in new installations of PI Web API. OSIsoft recommends leaving the EnableCSRFDefense configuration setting unchanged so that the CSRF defense is always in effect. If it is necessary to toggle this setting, OSIsoft recommends restarting the PI Web API service after changing the state.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "For more information on these vulnerabilities, please refer to OSIsoft\u0027s Security Bulletin:PI Web API Multiple security vulnerabilities resolved",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.osisoft.com/s/knowledgearticle?knowledgeArticleUrl=PI-Web-API-Multiple-security-vulnerabilities-resolved"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ]
    },
    {
      "cve": "CVE-2019-13516",
      "cwe": {
        "id": "CWE-693",
        "name": "Protection Mechanism Failure"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected product is vulnerable to a direct attack due to a cross-site request forgery protection setting that has not taken effect.CVE-2019-13516 has been assigned to this vulnerability. A CVSS v3 base score of 7.8 has been assigned; the CVSS vector string is (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).",
          "title": "Vulnerability Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "web.nvd.nist.gov",
          "url": "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-13516"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "OSIsoft recommends users upgrade to PI Web API 2018 SP1 or later to resolve these issues. To download PI Web API 2018 SP1, please access the OSIsoft customer portal (login required).",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "To avoid exposing sensitive information in the PI Web API Application Debug log, ensure that the Debug log is disabled on the Windows machine running PI Web API. Follow these steps to disable the Debug log: 1.    Open Command Prompt and run the command eventvwr.msc. 2.    Navigate to View \u003e Show Analytic and Debug Logs. 3.    Under Applications and Services Logs, find the PIWebAPI folder. 4.    Right click on the log entitled Debug, and click Disable Log.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Also be sure to clear existing entries in the Debug log.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "Assuming the log is Disabled but contains Events (e.g., after a troubleshooting session), enable the log and then disable it immediately.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "details": "If the log is already enabled, disable it, enable it, and finally disable it again to wipe out the contents.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "The CSRF defense is enabled by default in new installations of PI Web API. OSIsoft recommends leaving the EnableCSRFDefense configuration setting unchanged so that the CSRF defense is always in effect. If it is necessary to toggle this setting, OSIsoft recommends restarting the PI Web API service after changing the state.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "For more information on these vulnerabilities, please refer to OSIsoft\u0027s Security Bulletin:PI Web API Multiple security vulnerabilities resolved",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "url": "https://customers.osisoft.com/s/knowledgearticle?knowledgeArticleUrl=PI-Web-API-Multiple-security-vulnerabilities-resolved"
        }
      ],
      "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-0001"
          ]
        }
      ]
    }
  ]
}