ssa-858251
Vulnerability from csaf_siemens
Published
2025-03-11 00:00
Modified
2025-06-10 00:00
Summary
SSA-858251: Authentication Bypass Vulnerabilities in OPC UA

Notes

Summary
The products listed below contain two authentication bypass vulnerabilities that could allow an attacker to gain access to the data managed by the server. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.
General Recommendations
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. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
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
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.


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{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)",
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "The products listed below contain two authentication bypass vulnerabilities that could allow an attacker to gain access to the data managed by the server.\n\nSiemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available.",
        "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: https://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": "The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/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-858251: Authentication Bypass Vulnerabilities in OPC UA - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-858251.html"
      },
      {
        "category": "self",
        "summary": "SSA-858251: Authentication Bypass Vulnerabilities in OPC UA - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-858251.json"
      }
    ],
    "title": "SSA-858251: Authentication Bypass Vulnerabilities in OPC UA",
    "tracking": {
      "current_release_date": "2025-06-10T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-858251",
      "initial_release_date": "2025-03-11T00:00:00Z",
      "revision_history": [
        {
          "date": "2025-03-11T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2025-06-10T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added fix for  SIMIT V11; Clarified that SIMATIC BRAUMAT and SIMATIC SISTAR are not affected by CVE-2024-42513"
        }
      ],
      "status": "interim",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Industrial Edge for Machine Tools (formerly known as \"SINUMERIK Edge\")",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "Industrial Edge for Machine Tools (formerly known as \"SINUMERIK Edge\")"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC BRAUMAT",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC BRAUMAT"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003e= V7.5 SP0 Update 0 \u003c V7.5 SP0 Update 2",
                "product": {
                  "name": "SIMATIC Energy Manager PRO",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version_range",
                "name": "All versions \u003e= V7.2 Update 6",
                "product": {
                  "name": "SIMATIC Energy Manager PRO",
                  "product_id": "4"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC Energy Manager PRO"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC IPC DiagMonitor",
                  "product_id": "5"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC IPC DiagMonitor"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC SISTAR",
                  "product_id": "6"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC SISTAR"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "SIMATIC WinCC Unified V18",
                  "product_id": "7"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC Unified V18"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V19 Update 4",
                "product": {
                  "name": "SIMATIC WinCC Unified V19",
                  "product_id": "8"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC Unified V19"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V8.0 Update 3",
                "product": {
                  "name": "SIMATIC WinCC V8.0",
                  "product_id": "9"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC V8.0"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV11.3",
                "product": {
                  "name": "SIMIT V11",
                  "product_id": "10"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMIT V11"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-42512",
      "cwe": {
        "id": "CWE-208",
        "name": "Observable Timing Discrepancy"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "3",
          "4",
          "10"
        ]
      },
      "remediations": [
        {
          "category": "none_available",
          "details": "Currently no fix is available",
          "product_ids": [
            "4"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V11.3 or later version",
          "product_ids": [
            "10"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109987184/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.5 SP0 Update 2 or later version",
          "product_ids": [
            "3"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109976966/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "3",
            "4",
            "10"
          ]
        }
      ],
      "title": "CVE-2024-42512"
    },
    {
      "cve": "CVE-2024-42513",
      "cwe": {
        "id": "CWE-305",
        "name": "Authentication Bypass by Primary Weakness"
      },
      "flags": [
        {
          "group_ids": [
            "2",
            "6"
          ],
          "label": "vulnerable_code_not_in_execute_path"
        }
      ],
      "notes": [
        {
          "category": "summary",
          "text": "Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when using HTTPS endpoints.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "3",
          "4",
          "5",
          "7",
          "8",
          "9"
        ],
        "known_not_affected": [
          "2",
          "6"
        ]
      },
      "remediations": [
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1",
            "5"
          ]
        },
        {
          "category": "none_available",
          "details": "Currently no fix is available",
          "product_ids": [
            "4",
            "7"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V19 Update 4 or later version",
          "product_ids": [
            "8"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109925643/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.5 SP0 Update 2 or later version",
          "product_ids": [
            "3"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109976966/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V8.0 Update 3 or later version",
          "product_ids": [
            "9"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109818723/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "1",
            "3",
            "4",
            "5",
            "7",
            "8",
            "9"
          ]
        }
      ],
      "title": "CVE-2024-42513"
    }
  ]
}


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