SSA-232418

Vulnerability from csaf_siemens - Published: 2019-08-13 00:00 - Updated: 2022-08-09 00:00
Summary
SSA-232418: Vulnerabilities in SIMATIC S7-1200 and SIMATIC S7-1500 CPU Families

Notes

Summary
Two vulnerabilities have been identified in the SIMATIC S7-1200/S7-1500 CPU families and related products. One vulnerability (CVE-2019-10943) could allow an attacker with network access to affected devices to modify the user program stored on these devices such that the source code differs from the actual running code. The other vulnerability (CVE-2019-10929) could allow an attacker in a Man- in-the-Middle position to modify network traffic exchanged on port 102/tcp. Siemens has released updates for several affected products to fix CVE-2019-10929 and recommends to update to the latest versions. Regarding CVE-2019-10943, Siemens recommends specific countermeasures for products where updates 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
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.
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{
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    "csaf_version": "2.0",
    "distribution": {
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      "tlp": {
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      }
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    "notes": [
      {
        "category": "summary",
        "text": "Two vulnerabilities have been identified in the SIMATIC\nS7-1200/S7-1500 CPU families and related products. One vulnerability\n(CVE-2019-10943) could allow an attacker with  network access to\naffected devices to modify the user program stored on these  devices\nsuch that the source code differs from the actual running code. The\nother vulnerability (CVE-2019-10929) could allow an attacker in a Man-\nin-the-Middle position  to modify network traffic exchanged on port\n102/tcp.     Siemens has released updates for several affected\nproducts to fix CVE-2019-10929 and recommends to update to the latest\nversions.  Regarding CVE-2019-10943, Siemens recommends specific\ncountermeasures for products where updates are not, or not yet\navailable.",
        "title": "Summary"
      },
      {
        "category": "general",
        "text": "As a general security measure, Siemens strongly recommends to protect\nnetwork access to devices with appropriate mechanisms. In order to\noperate the devices in a protected IT environment, Siemens recommends\nto configure the environment according to Siemens\u0027 operational\nguidelines for Industrial Security (Download:\nhttps://www.siemens.com/cert/operational-guidelines-industrial-\nsecurity), and to follow the recommendations in the product manuals.\n\nAdditional information on Industrial Security by Siemens can be found\nat: 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": "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"
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    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "productcert@siemens.com",
      "name": "Siemens ProductCERT",
      "namespace": "https://www.siemens.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "SSA-232418: Vulnerabilities in SIMATIC S7-1200 and SIMATIC S7-1500 CPU Families - PDF Version",
        "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-232418.pdf"
      },
      {
        "category": "self",
        "summary": "SSA-232418: Vulnerabilities in SIMATIC S7-1200 and SIMATIC S7-1500 CPU Families - TXT Version",
        "url": "https://cert-portal.siemens.com/productcert/txt/ssa-232418.txt"
      },
      {
        "category": "self",
        "summary": "SSA-232418: Vulnerabilities in SIMATIC S7-1200 and SIMATIC S7-1500 CPU Families - CSAF Version",
        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-232418.json"
      }
    ],
    "title": "SSA-232418: Vulnerabilities in SIMATIC S7-1200 and SIMATIC S7-1500 CPU Families",
    "tracking": {
      "current_release_date": "2022-08-09T00:00:00Z",
      "generator": {
        "engine": {
          "name": "Siemens ProductCERT CSAF Generator",
          "version": "1"
        }
      },
      "id": "SSA-232418",
      "initial_release_date": "2019-08-13T00:00:00Z",
      "revision_history": [
        {
          "date": "2019-08-13T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2019-12-10T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Added solution for CVE-2019-10929 for S7-1200 and S7-1500. SIPLUS devices now explicitly mentioned in the list of affected products"
        },
        {
          "date": "2020-03-10T00:00:00Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Removed exclusion of SIMATIC S7-1500 CPU 1518-4 PN/DP. Added solution for CVE-2019-10929 for ET200SP CPU 1515SP PC2 and SIMATIC S7-1500 Software Controller"
        },
        {
          "date": "2020-03-12T00:00:00Z",
          "legacy_version": "1.3",
          "number": "4",
          "summary": "Fix information about affected versions in product list."
        },
        {
          "date": "2022-08-09T00:00:00Z",
          "legacy_version": "1.4",
          "number": "5",
          "summary": "Added SIMATIC Drive Controller and SIMATIC ET 200SP Open Controller CPU 1515SP PC as affected products; separate fix information for the different CVE IDs; updated fix release URL for SIMATIC S7-1200; reviewed mitigation measure"
        }
      ],
      "status": "final",
      "version": "5"
    }
  },
  "product_tree": {
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            "branches": [
              {
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                "name": "vers:all/*",
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                  "name": "SIMATIC Drive Controller family",
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          },
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                "category": "product_version_range",
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                }
              }
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          },
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                "category": "product_version_range",
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                }
              }
            ],
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            "name": "SIMATIC S7-PLCSIM Advanced"
          }
        ],
        "category": "vendor",
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      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2019-10929",
      "cwe": {
        "id": "CWE-327",
        "name": "Use of a Broken or Risky Cryptographic Algorithm"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Affected devices contain a message protection bypass vulnerability due to certain\nproperties in the calculation used for integrity protection.\n\nThis could allow an attacker in a Man-in-the-Middle position to modify network\ntraffic sent on port 102/tcp to the affected devices.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "2",
          "3",
          "5",
          "7",
          "9",
          "11"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Apply password protection for S7 communication",
          "product_ids": [
            "2",
            "3",
            "5",
            "7",
            "9",
            "11"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "2"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V20.8 or later version",
          "product_ids": [
            "9"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109772864/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.4.0 or later version",
          "product_ids": [
            "5"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109793280/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.0 or later version",
          "product_ids": [
            "11"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109772889/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2.8.1 or later version",
          "product_ids": [
            "7"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109478459/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V20.8 or later version",
          "product_ids": [
            "3"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109759122/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "2",
            "3",
            "5",
            "7",
            "9",
            "11"
          ]
        }
      ],
      "title": "CVE-2019-10929"
    },
    {
      "cve": "CVE-2019-10943",
      "cwe": {
        "id": "CWE-353",
        "name": "Missing Support for Integrity Check"
      },
      "notes": [
        {
          "category": "summary",
          "text": "An attacker with network access to port 102/tcp could potentially modify the\nuser program on the PLC in a way that the running code is different from the\nsource code which is stored on the device.\n\nAn attacker must have network access to affected devices and must be able to\nperform changes to the user program. The vulnerability could impact the\nperceived integrity of the user program stored on the CPU. An engineer that\ntries to obtain the code of the user program running on the device, can\nreceive different source code that is not actually running on the device.\n",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6",
          "7",
          "8",
          "9",
          "10",
          "11",
          "12"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Apply password protection for S7 communication",
          "product_ids": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1",
            "2",
            "4",
            "6",
            "8",
            "10",
            "12"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V20.8 or later version",
          "product_ids": [
            "9"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109772864/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V4.4.0 or later version",
          "product_ids": [
            "5"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109793280/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V3.0 or later version",
          "product_ids": [
            "11"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109772889/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2.8.1 or later version",
          "product_ids": [
            "7"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109478459/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V20.8 or later version",
          "product_ids": [
            "3"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109759122/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:T/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12"
          ]
        }
      ],
      "title": "CVE-2019-10943"
    }
  ]
}


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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.