{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "category": "summary",
        "text": "SINEC NMS versions before V1.0.3 are affected by a vulnerability in the logback component (CVE-2021-42550) that could allow attackers with write access to the logback configuration file to execute arbitrary code on the system. \n\nSiemens has released an update for SINEC NMS and recommends to update to the latest version.",
        "title": "Summary"
      },
      {
        "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\u0027 operational guidelines for Industrial Security (Download: \nhttps://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.\nAdditional information on Industrial Security by Siemens can be found at: \nhttps://www.siemens.com/industrialsecurity",
        "title": "General Recommendations"
      },
      {
        "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": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "Siemens Security Advisories are subject to the terms and conditions contained in Siemens\u0027 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\u0027 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.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "productcert@siemens.com",
      "name": "Siemens ProductCERT",
      "namespace": "https://www.siemens.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-371761: Arbitrary Code Execution Vulnerability in the Logback Component of  SINEC NMS before V1.0.3 - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-371761.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-371761: Arbitrary Code Execution Vulnerability in the Logback Component of  SINEC NMS before V1.0.3 - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-371761.txt"
      },
      {
        "category": "self",
        "summary": "SSA-371761: Arbitrary Code Execution Vulnerability in the Logback Component of  SINEC NMS before V1.0.3 - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-371761.json"
      }
    ],
    "title": "SSA-371761: Arbitrary Code Execution Vulnerability in the Logback Component of  SINEC NMS before V1.0.3",
    "tracking": {
      "current_release_date": "2022-11-08T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-371761",
      "initial_release_date": "2022-11-08T00:00:00Z",
      "revision_history": [
        {
          "date": "2022-11-08T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V1.0.3",
                "product": {
                  "name": "SINEC NMS",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "SINEC NMS"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-42550",
      "cwe": {
        "id": "CWE-502",
        "name": "Deserialization of Untrusted Data"
      },
      "notes": [
        {
          "category": "summary",
          "text": "In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Restrict the write access to the logback configuration file (\nlogback.xml) to trusted personnel",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1.0.3 or later version",
          "product_ids": [
            "1"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109813788/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.6,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "1"
          ]
        }
      ],
      "title": "CVE-2021-42550"
    }
  ]
}