ssa-840188
Vulnerability from csaf_siemens
Published
2021-11-09 00:00
Modified
2023-04-11 00:00
Summary
SSA-840188: Multiple Vulnerabilities in SIMATIC WinCC Affecting Other SIMATIC Software Products

Notes

Summary
Multiple vulnerabilities were found in SIMATIC WinCC that ultimately could allow local or remote attackers to escalate privileges and read, write or delete critical files. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available. Note: The vulnerability CVE-2021-40359 is part of a shared component, used by various Siemens products (SIMATIC Communication Services - SCS). The installation of a fix version of any product also removes the vulnerability for other products on the same system, even if those products were not updated.
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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    "notes": [
      {
        "category": "summary",
        "text": "Multiple vulnerabilities were found in SIMATIC WinCC that ultimately could allow local or remote attackers to escalate privileges and read, write or delete critical files.\n\nSiemens has released updates for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where updates are not, or not yet available.\n\nNote: The vulnerability CVE-2021-40359 is part of a shared component, used by various Siemens products (SIMATIC Communication Services - SCS). The installation of a fix version of any product also removes the vulnerability for other products on the same system, even if those products were not updated.",
        "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"
      },
      {
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        "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.",
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    ],
    "title": "SSA-840188: Multiple Vulnerabilities in SIMATIC WinCC Affecting Other SIMATIC Software Products",
    "tracking": {
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      },
      "id": "SSA-840188",
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      "revision_history": [
        {
          "date": "2021-11-09T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2022-02-08T00:00:00Z",
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        },
        {
          "date": "2022-03-08T00:00:00Z",
          "legacy_version": "1.2",
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        },
        {
          "date": "2022-04-12T00:00:00Z",
          "legacy_version": "1.3",
          "number": "4",
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        },
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        },
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          "legacy_version": "1.6",
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        }
      ],
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            "category": "product_name",
            "name": "SIMATIC NET PC Software V17"
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                }
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          },
          {
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              {
                "category": "product_version_range",
                "name": "All versions \u003c V7.5 SP2 Update 5",
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                  "product_id": "21"
                }
              }
            ],
            "category": "product_name",
            "name": "SIMATIC WinCC V7.5"
          }
        ],
        "category": "vendor",
        "name": "Siemens"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-40358",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Legitimate file operations on the web server of the affected systems do not properly neutralize special elements within the pathname. An attacker could then cause the pathname to resolve to a location outside of the restricted directory on the server and read, write or delete unexpected critical files.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "11",
          "12",
          "13",
          "17",
          "18",
          "19",
          "20",
          "21"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "CVE-2021-40358: Disable the webserver or only enable it temporarily, when needed",
          "product_ids": [
            "11",
            "12",
            "13",
            "17",
            "18",
            "19",
            "20",
            "21"
          ]
        },
        {
          "category": "mitigation",
          "details": "To fix CVE-2021-40359 see chapter \"Additional Information\"",
          "product_ids": [
            "11",
            "12"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V8.2 SP1; then update SIMATIC WinCC to V7.4 SP1 Update 19 or later version to fix CVE-2021-40358 and CVE-2021-40364",
          "product_ids": [
            "11"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109806846/"
        },
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          "category": "vendor_fix",
          "details": "Update to V15 SP1 Update 7 or later version",
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          ],
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        },
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          "category": "vendor_fix",
          "details": "Update to V16 Update 5 or later version",
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          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109776017/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V17 Update 2 or later version",
          "product_ids": [
            "19"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109784441/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.4 SP1 Update 19 or later version",
          "product_ids": [
            "20"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109806846/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.5 SP2 Update 5 or later version",
          "product_ids": [
            "21"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109793460/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.1 SP1 or later version",
          "product_ids": [
            "13"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109805073/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.0 SP3 UC04 or later version to fix CVE-2021-40358 and CVE-2021-40364",
          "product_ids": [
            "12"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109780528/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "11",
            "12",
            "13",
            "17",
            "18",
            "19",
            "20",
            "21"
          ]
        }
      ],
      "title": "CVE-2021-40358"
    },
    {
      "cve": "CVE-2021-40359",
      "cwe": {
        "id": "CWE-22",
        "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "When downloading files, the affected systems do not properly neutralize special elements within the pathname. An attacker could then cause the pathname to resolve to a location outside of the restricted directory on the server and read unexpected critical files.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2",
          "3",
          "4",
          "5",
          "6",
          "7",
          "8",
          "9",
          "10",
          "11",
          "12",
          "13",
          "14",
          "15",
          "16",
          "17",
          "18",
          "19",
          "20",
          "21"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "The vulnerability is fixed if SIMATIC WinCC V7.4 SP1 Update 19 or later version is installed on the same system",
          "product_ids": [
            "1",
            "4",
            "5",
            "14",
            "15"
          ]
        },
        {
          "category": "mitigation",
          "details": "To fix CVE-2021-40359 see chapter \"Additional Information\"",
          "product_ids": [
            "11",
            "12"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1",
            "4",
            "5",
            "7",
            "8",
            "14",
            "15"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V8.2 SP1; then update SIMATIC WinCC to V7.4 SP1 Update 19 or later version to fix CVE-2021-40358 and CVE-2021-40364",
          "product_ids": [
            "11"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109806846/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V15 SP1 Update 7 or later version",
          "product_ids": [
            "17"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109763890/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V16 Update 5 or later version",
          "product_ids": [
            "18"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109776017/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V17 Update 2 or later version",
          "product_ids": [
            "19"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109784441/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.4 SP1 Update 19 or later version",
          "product_ids": [
            "20"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109806846/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.5 SP2 Update 5 or later version",
          "product_ids": [
            "21"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109793460/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.1 SP1 or later version",
          "product_ids": [
            "13"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109805073/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.0 SP3 UC04 or later version to fix CVE-2021-40358 and CVE-2021-40364",
          "product_ids": [
            "12"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109780528/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.0 Upd4 or later version; V9.0 Upd4 is bundled in PCS 7 V9.0 SP3 UC04",
          "product_ids": [
            "2"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109780528/"
        },
        {
          "category": "vendor_fix",
          "details": "See remediation for SIMATIC PCS 7 V9.1",
          "product_ids": [
            "3",
            "6",
            "16"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V16 Update 6 or later version",
          "product_ids": [
            "9"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109811815/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V17 SP1 or later version",
          "product_ids": [
            "10"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/de/view/109808270/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4",
            "5",
            "6",
            "7",
            "8",
            "9",
            "10",
            "11",
            "12",
            "13",
            "14",
            "15",
            "16",
            "17",
            "18",
            "19",
            "20",
            "21"
          ]
        }
      ],
      "title": "CVE-2021-40359"
    },
    {
      "cve": "CVE-2021-40364",
      "cwe": {
        "id": "CWE-532",
        "name": "Insertion of Sensitive Information into Log File"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The affected systems store sensitive information in log files. An attacker with access to the log files could publicly expose the information or reuse it to develop further attacks on the system.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "11",
          "12",
          "13",
          "17",
          "18",
          "19",
          "20",
          "21"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "CVE-2021-40364: Harden the application\u2019s host to prevent local access by untrusted personnel",
          "product_ids": [
            "11",
            "12",
            "13",
            "17",
            "18",
            "19",
            "20",
            "21"
          ]
        },
        {
          "category": "mitigation",
          "details": "To fix CVE-2021-40359 see chapter \"Additional Information\"",
          "product_ids": [
            "11",
            "12"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V8.2 SP1; then update SIMATIC WinCC to V7.4 SP1 Update 19 or later version to fix CVE-2021-40358 and CVE-2021-40364",
          "product_ids": [
            "11"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109806846/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V15 SP1 Update 7 or later version",
          "product_ids": [
            "17"
          ],
          "url": "https://support.industry.siemens.com/cs/us/en/view/109763890/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V16 Update 5 or later version",
          "product_ids": [
            "18"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109776017/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V17 Update 2 or later version",
          "product_ids": [
            "19"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109784441/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.4 SP1 Update 19 or later version",
          "product_ids": [
            "20"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109806846/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V7.5 SP2 Update 5 or later version",
          "product_ids": [
            "21"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109793460/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.1 SP1 or later version",
          "product_ids": [
            "13"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109805073/"
        },
        {
          "category": "vendor_fix",
          "details": "Update to V9.0 SP3 UC04 or later version to fix CVE-2021-40358 and CVE-2021-40364",
          "product_ids": [
            "12"
          ],
          "url": "https://support.industry.siemens.com/cs/ww/en/view/109780528/"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "11",
            "12",
            "13",
            "17",
            "18",
            "19",
            "20",
            "21"
          ]
        }
      ],
      "title": "CVE-2021-40364"
    }
  ]
}


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