SSA-479842

Vulnerability from csaf_siemens - Published: 2021-12-21 00:00 - Updated: 2021-12-23 00:00
Summary
SSA-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced)

Notes

Summary
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". On 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. On 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. The Siemens Energy Sensformer / Sensgear cloud service was affected by these vulnerabilities and has remediated them. No user actions are necessary.
General Recommendations
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. Siemens 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. As 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.
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
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.
To clipboard 

{
  "document": {
    "category": "Siemens Security Advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited.",
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "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": "Summary"
      },
      {
        "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\u0027s 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": "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-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced) - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-479842.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced) - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-479842.txt"
      },
      {
        "category": "self",
        "summary": "SSA-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced) - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-479842.json"
      }
    ],
    "title": "SSA-479842: Apache Log4j Vulnerabilities - Impact to Siemens Energy Sensformer / Sensgear (Platform, Basic and Advanced)",
    "tracking": {
      "current_release_date": "2021-12-23T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-479842",
      "initial_release_date": "2021-12-21T00:00:00Z",
      "revision_history": [
        {
          "date": "2021-12-21T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2021-12-23T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Included Sensgear, clarified product name and summary"
        }
      ],
      "status": "interim",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V2.7.0",
                "product": {
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA12-0TP0)",
                  "product_id": "1",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA12-0TP0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Sensformer / Sensgear Platform"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V2.7.0",
                "product": {
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA22-0TP0)",
                  "product_id": "2",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA22-0TP0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Sensformer / Sensgear Platform"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V2.7.0",
                "product": {
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA32-0TP0)",
                  "product_id": "3",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA32-0TP0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Sensformer / Sensgear Platform"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V2.7.0",
                "product": {
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA42-0TP0)",
                  "product_id": "4",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA42-0TP0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Sensformer / Sensgear Platform"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c V2.7.0",
                "product": {
                  "name": "Sensformer / Sensgear Platform (6BK1602-0AA52-0TP0)",
                  "product_id": "5",
                  "product_identification_helper": {
                    "model_numbers": [
                      "6BK1602-0AA52-0TP0"
                    ]
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Sensformer / Sensgear Platform"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-44228",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Apache Log4j V2, versions \u003c 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.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-44228 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-44228.json"
        }
      ],
      "remediations": [
        {
          "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",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "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",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "title": "CVE-2021-44228"
    },
    {
      "cve": "CVE-2021-45046",
      "cwe": {
        "id": "CWE-20",
        "name": "Improper Input Validation"
      },
      "notes": [
        {
          "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.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-45046 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-45046.json"
        }
      ],
      "remediations": [
        {
          "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",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "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",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "title": "CVE-2021-45046"
    },
    {
      "cve": "CVE-2021-45105",
      "cwe": {
        "id": "CWE-674",
        "name": "Uncontrolled Recursion"
      },
      "notes": [
        {
          "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.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5"
        ]
      },
      "references": [
        {
          "summary": "CVE-2021-45105 Mitre 5.0 json",
          "url": "https://cert-portal.siemens.com/productcert/mitre/CVE-2021-45105.json"
        }
      ],
      "remediations": [
        {
          "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",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "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",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5"
          ]
        }
      ],
      "title": "CVE-2021-45105"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.