{
  "document": {
    "title": "SSA-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced)",
    "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-479842",
      "status": "interim",
      "version": "2",
      "revision_history": [
        {
          "number": "1",
          "legacy_version": "1.0",
          "date": "2021-12-21T00:00:00Z",
          "summary": "Publication Date"
        },
        {
          "number": "2",
          "legacy_version": "1.1",
          "date": "2021-12-23T00:00:00Z",
          "summary": "Included Sensgear, clarified product name and summary"
        }
      ],
      "initial_release_date": "2021-12-21T00:00:00Z",
      "current_release_date": "2021-12-23T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      }
    },
    "notes": [
      {
        "title": "Summary",
        "category": "summary",
        "text": "On 2021-12-09, a vulnerability in Apache Log4j (a logging tool used in many Java-based applications) was disclosed, that could allow remote unauthenticated attackers to execute code on vulnerable systems. The vulnerability is tracked as CVE-2021-44228 and is also known as \"Log4Shell\".\n\nOn 2021-12-14 an additional denial of service vulnerability (CVE-2021-45046) was published rendering the initial mitigations and fix in version 2.15.0 as incomplete under certain non-default configurations. Log4j versions 2.16.0 and 2.12.2 are supposed to fix both vulnerabilities.\n\nOn 2021-12-17, CVE-2021-45046 was reclassified with an increased CVSS base score (from 3.7 to 9.0). The potential impact of CVE-2021-45046 now includes - besides denial of service - also information disclosure and local (and potential remote) code execution. Furthermore, one additional denial of service vulnerability, CVE-2021-45105, was disclosed.\n\nThe Siemens Energy Sensformer / Sensgear cloud service was affected by these vulnerabilities and has remediated them. No user actions are necessary."
      },
      {
        "title": "General Recommendations",
        "category": "general",
        "text": "Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid's reliability can thus be minimized by virtue of the grid design.\n\nSiemens Energy strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens Energy strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment.\n\nAs a general security measure Siemens Energy strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment."
      },
      {
        "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-479842.pdf",
        "summary": "SSA-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced) - PDF Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-479842.txt",
        "summary": "SSA-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced) - TXT Version"
      },
      {
        "category": "self",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-479842.json",
        "summary": "SSA-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced) - CSAF Version"
      }
    ]
  },
  "product_tree": {
    "branches": [
      {
        "name": "Siemens",
        "category": "vendor",
        "branches": [
          {
            "name": "Sensformer / Sensgear Platform",
            "category": "product_name",
            "branches": [
              {
                "name": "< V2.7.0",
                "category": "product_version_range",
                "product": {
                  "product_id": "1",
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA12-0TP0)",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA12-0TP0"
                    ]
                  }
                }
              }
            ]
          },
          {
            "name": "Sensformer / Sensgear Platform",
            "category": "product_name",
            "branches": [
              {
                "name": "< V2.7.0",
                "category": "product_version_range",
                "product": {
                  "product_id": "2",
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA22-0TP0)",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA22-0TP0"
                    ]
                  }
                }
              }
            ]
          },
          {
            "name": "Sensformer / Sensgear Platform",
            "category": "product_name",
            "branches": [
              {
                "name": "< V2.7.0",
                "category": "product_version_range",
                "product": {
                  "product_id": "3",
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA32-0TP0)",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA32-0TP0"
                    ]
                  }
                }
              }
            ]
          },
          {
            "name": "Sensformer / Sensgear Platform",
            "category": "product_name",
            "branches": [
              {
                "name": "< V2.7.0",
                "category": "product_version_range",
                "product": {
                  "product_id": "4",
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA42-0TP0)",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA42-0TP0"
                    ]
                  }
                }
              }
            ]
          },
          {
            "name": "Sensformer / Sensgear Platform",
            "category": "product_name",
            "branches": [
              {
                "name": "< V2.7.0",
                "category": "product_version_range",
                "product": {
                  "product_id": "5",
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA52-0TP0)",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA52-0TP0"
                    ]
                  }
                }
              }
            ]
          }
        ]
      }
    ]
  },
  "vulnerabilities": [
    {
      "title": "CVE-2021-44228",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "Apache Log4j V2, versions < 2.15.0 do not protect JNDI features (as used in configuration, log messages, and parameters) against attacker controlled LDAP and other JNDI related endpoints.\n\nAn attacker who can control log messages or log message parameters could execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled."
        }
      ],
      "cve": "CVE-2021-44228",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 10.0,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ],
          "category": "vendor_fix",
          "details": "Vulnerabilities fixed on central cloud service between 2021-12-10 (CVE-2021-44228) and 2021-12-21 (CVE-2021-45105); no user actions necessary"
        }
      ],
      "references": [
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-44228.json",
          "summary": "CVE-2021-44228 Mitre 5.0 json"
        }
      ]
    },
    {
      "title": "CVE-2021-45046",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "The fix to address CVE-2021-44228 was incomplete in certain non-default configurations, when the logging configuration uses a non-default Pattern Layout with a Context Lookup (for example, ${ctx:loginId}).\n\nThis could allow attackers with control over Thread Context Map (MDC) input data to craft malicious input data using a JNDI Lookup pattern, resulting in an information leak and remote code execution in some environments and local code execution in all environments."
        }
      ],
      "cve": "CVE-2021-45046",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 9.0,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ],
          "category": "vendor_fix",
          "details": "Vulnerabilities fixed on central cloud service between 2021-12-10 (CVE-2021-44228) and 2021-12-21 (CVE-2021-45105); no user actions necessary"
        }
      ],
      "references": [
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-45046.json",
          "summary": "CVE-2021-45046 Mitre 5.0 json"
        }
      ]
    },
    {
      "title": "CVE-2021-45105",
      "notes": [
        {
          "title": "Summary",
          "category": "summary",
          "text": "Apache Log4j2 versions 2.0-alpha1 through 2.16.0 did not protect from uncontrolled recursion from self-referential lookups, when the logging configuration uses a non-default Pattern Layout with a Context Lookup (for example, $${ctx:loginId}).\n\nThis could allow attackers with control over Thread Context Map (MDC) input data to craft malicious input data that contains a recursive lookup, resulting in a denial of service condition."
        }
      ],
      "cve": "CVE-2021-45105",
      "cwe": {
        "id": "CWE-674",
        "name": "Uncontrolled Recursion"
      },
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "scores": [
        {
          "cvss_v3": {
            "version": "3.1",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "remediations": [
        {
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ],
          "category": "vendor_fix",
          "details": "Vulnerabilities fixed on central cloud service between 2021-12-10 (CVE-2021-44228) and 2021-12-21 (CVE-2021-45105); no user actions necessary"
        }
      ],
      "references": [
        {
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-45105.json",
          "summary": "CVE-2021-45105 Mitre 5.0 json"
        }
      ]
    }
  ]
}