{
  "document": {
    "title": "SSA-428051: Privilege Escalation Vulnerability in TIA Administrator",
    "category": "Siemens Security Advisory",
    "csaf_version": "2.0",
    "publisher": {
      "name": "Siemens ProductCERT",
      "contact_details": "productcert@siemens.com",
      "category": "vendor",
      "namespace": "https://www.siemens.com"
    },
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "tracking": {
      "id": "SSA-428051",
      "status": "final",
      "version": "2",
      "revision_history": [
        {
          "number": "1",
          "legacy_version": "1.0",
          "date": "2021-02-09T00:00:00Z",
          "summary": "Publication Date"
        },
        {
          "number": "2",
          "legacy_version": "1.1",
          "date": "2021-09-14T00:00:00Z",
          "summary": "Added solution for SIMATIC PCS neo"
        }
      ],
      "initial_release_date": "2021-02-09T00:00:00Z",
      "current_release_date": "2021-09-14T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      }
    },
    "notes": [
      {
        "title": "Summary",
        "category": "summary",
        "text": "The latest update for TIA Administrator, installed together with TIA Portal and PCS neo, fixes a privilege escalation vulnerability that could allow local users to escalate privileges and execute code as local SYSTEM user.\n\nSiemens has released updates for the affected products and recommends to update to the latest versions."
      },
      {
        "title": "General Recommendations",
        "category": "general",
        "text": "As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\n\nAdditional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity"
      },
      {
        "title": "Additional Resources",
        "category": "general",
        "text": "For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories"
      },
      {
        "title": "Terms of Use",
        "category": "legal_disclaimer",
        "text": "Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter \"License Terms\"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter \"Terms of Use\"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use."
      }
    ],
    "references": [
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-428051.pdf",
        "summary": "SSA-428051: Privilege Escalation Vulnerability in TIA Administrator - PDF Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-428051.txt",
        "summary": "SSA-428051: Privilege Escalation Vulnerability in TIA Administrator - TXT Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-428051.json",
        "summary": "SSA-428051: Privilege Escalation Vulnerability in TIA Administrator - CSAF Version"
      }
    ],
    "acknowledgments": [
      {
        "names": [
          "Will Dormann"
        ],
        "organization": "CERT Coordination Center (CERT/CC)",
        "summary": "coordinated disclosure"
      }
    ]
  },
  "product_tree": {
    "branches": [
      {
        "name": "Siemens",
        "category": "vendor",
        "branches": [
          {
            "name": "PCS neo (Administration Console)",
            "category": "product_name",
            "branches": [
              {
                "name": "< V3.1",
                "category": "product_version_range",
                "product": {
                  "product_id": "1",
                  "name": "PCS neo (Administration Console)"
                }
              }
            ]
          },
          {
            "name": "TIA Portal",
            "category": "product_name",
            "branches": [
              {
                "name": "V15, V15.1 and V16",
                "category": "product_version_range",
                "product": {
                  "product_id": "2",
                  "name": "TIA Portal"
                }
              }
            ]
          }
        ]
      }
    ]
  },
  "vulnerabilities": [
    {
      "title": "CVE-2020-25238",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "Manipulating certain files in specific folders could allow a local attacker to execute code with SYSTEM privileges.\n\nThe security vulnerability could be exploited by an attacker with a valid account and limited access rights on the system."
        }
      ],
      "cve": "CVE-2020-25238",
      "cwe": {
        "id": "CWE-284",
        "name": "Improper Access Control"
      },
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1"
          ],
          "category": "vendor_fix",
          "details": "Update to V3.1 or later version"
        },
        {
          "product_ids": [
            "2"
          ],
          "category": "vendor_fix",
          "details": "Update TIA Administrator to V1.0 SP2 Upd2 or later version",
          "url": "https://support.industry.siemens.com/cs/ww/en/view/114358/"
        },
        {
          "product_ids": [
            "1",
            "2"
          ],
          "category": "mitigation",
          "details": "Restrict local access to authorized users."
        },
        {
          "product_ids": [
            "1",
            "2"
          ],
          "category": "mitigation",
          "details": "For PCS neo apply measures described in “Industrial Security in SIMATIC PCS neo”: https://support.industry.siemens.com/cs/ww/en/view/109771524"
        }
      ],
      "references": [
        {
          "url": "https://support.industry.siemens.com/cs/ww/en/view/114358/",
          "summary": "CVE-2020-25238 - TIA Portal"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2020-25238.json",
          "summary": "CVE-2020-25238 Mitre 5.0 json"
        }
      ]
    }
  ]
}