ssa-446545
Vulnerability from csaf_siemens
Published
2024-09-10 00:00
Modified
2025-07-08 00:00
Summary
SSA-446545: Impact of RegreSSHion (CVE-2024-6387) in Siemens Industrial Products

Notes

Summary
An OpenSSH vulnerability, known as regreSSHion, affects multiple Siemens industrial products. This security regression vulnerability consists in a race condition which may allow an unauthenticated remote attacker to achieve remote code execution with high impact on the affected system. 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 specific 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": "An OpenSSH vulnerability, known as regreSSHion, affects multiple Siemens industrial products. This security regression vulnerability consists in a race condition which may allow an unauthenticated remote attacker to achieve remote code execution with high impact on the affected system.\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 specific 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-446545: Impact of RegreSSHion (CVE-2024-6387)  in Siemens Industrial Products - HTML Version",
        "url": "https://cert-portal.siemens.com/productcert/html/ssa-446545.html"
      },
      {
        "category": "self",
        "summary": "SSA-446545: Impact of RegreSSHion (CVE-2024-6387)  in Siemens Industrial Products - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-446545.json"
      }
    ],
    "title": "SSA-446545: Impact of RegreSSHion (CVE-2024-6387)  in Siemens Industrial Products",
    "tracking": {
      "current_release_date": "2025-07-08T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-446545",
      "initial_release_date": "2024-09-10T00:00:00Z",
      "revision_history": [
        {
          "date": "2024-09-10T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2025-07-08T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added fix for SINAMICS IIoT module"
        }
      ],
      "status": "interim",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/*",
                "product": {
                  "name": "Industrial Edge Management OS (IEM-OS)",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "Industrial Edge Management OS (IEM-OS)"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V1.0 HF1",
                "product": {
                  "name": "SINAMICS IIoT module",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "SINAMICS IIoT module"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "All versions \u003c V3.2 SP2",
                "product": {
                  "name": "SINEMA Remote Connect Server",
                  "product_id": "3"
                }
              }
            ],
            "category": "product_name",
            "name": "SINEMA Remote Connect Server"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:all/\u003cV6.24",
                "product": {
                  "name": "SINUMERIK ONE",
                  "product_id": "4"
                }
              }
            ],
            "category": "product_name",
            "name": "SINUMERIK ONE"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2024-6387",
      "cwe": {
        "id": "CWE-364",
        "name": "Signal Handler Race Condition"
      },
      "notes": [
        {
          "category": "summary",
          "text": "A security regression (CVE-2006-5051) was discovered in OpenSSH\u0027s server (sshd). There is a race condition which can lead to sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Disable SSH when possible",
          "product_ids": [
            "1",
            "2",
            "3",
            "4"
          ]
        },
        {
          "category": "mitigation",
          "details": "Limit remote access to the SSH port (default: 22/tcp) to trusted systems only",
          "product_ids": [
            "1",
            "2",
            "3",
            "4"
          ]
        },
        {
          "category": "mitigation",
          "details": "Change the default SSH port (22/tcp) to a nonstandard port to minimize success of automated attacks",
          "product_ids": [
            "1",
            "2",
            "3",
            "4"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V1.0 HF1 or later version",
          "product_ids": [
            "2"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109989288/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.2 SP2 or later version",
          "product_ids": [
            "3"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109974084/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V6.24 or later version\nUpdated software version can be obtained from Siemens customer support or a local partner.",
          "product_ids": [
            "4"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4"
          ]
        }
      ],
      "title": "CVE-2024-6387"
    }
  ]
}


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