SSA-620288

Vulnerability from csaf_siemens - Published: 2021-12-14 00:00 - Updated: 2025-03-11 00:00
Summary
SSA-620288: Multiple Vulnerabilities (NUCLEUS:13) in Capital Embedded AR Classic
Notes
Summary: Multiple vulnerabilities (also known as "NUCLEUS:13") have be identified in the Nucleus RTOS (real-time operating system) and reported in the Siemens Security Advisory SSA-044112: https://cert-portal.siemens.com/productcert/html/ssa-044112.html. Capital Embedded AR Classic uses an affected version of the Nucleus software and inherently contains several of these vulnerabilities. Siemens has released a new version for Capital Embedded AR Classic R20-11 and recommends to update to the latest version. 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.
CVE-2021-31344
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Affected products
Product Identifier Version Remediation
Capital Embedded AR Classic 431-422
Siemens / Capital Embedded AR Classic 431-422
 vers:all/*
Mitigation
No Fix Planned
Capital Embedded AR Classic R20-11
Siemens / Capital Embedded AR Classic R20-11
 vers:all/<V2303
Mitigation
Vendor Fix
CVE-2021-31345
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-1284 - Improper Validation of Specified Quantity in Input
Affected products
Product Identifier Version Remediation
Capital Embedded AR Classic 431-422
Siemens / Capital Embedded AR Classic 431-422
 vers:all/*
Mitigation
No Fix Planned
Capital Embedded AR Classic R20-11
Siemens / Capital Embedded AR Classic R20-11
 vers:all/<V2303
Mitigation
Vendor Fix
CVE-2021-31346
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE-1284 - Improper Validation of Specified Quantity in Input
Affected products
Product Identifier Version Remediation
Capital Embedded AR Classic 431-422
Siemens / Capital Embedded AR Classic 431-422
 vers:all/*
Mitigation
No Fix Planned
Capital Embedded AR Classic R20-11
Siemens / Capital Embedded AR Classic R20-11
 vers:all/<V2303
Mitigation
Vendor Fix
CVE-2021-31881
7.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE-125 - Out-of-bounds Read
Affected products
Product Identifier Version Remediation
Capital Embedded AR Classic 431-422
Siemens / Capital Embedded AR Classic 431-422
 vers:all/*
Mitigation
Mitigation
No Fix Planned
Capital Embedded AR Classic R20-11
Siemens / Capital Embedded AR Classic R20-11
 vers:all/<V2303
Mitigation
Mitigation
Vendor Fix
CVE-2021-31882
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected products
Product Identifier Version Remediation
Capital Embedded AR Classic 431-422
Siemens / Capital Embedded AR Classic 431-422
 vers:all/*
Mitigation
Mitigation
No Fix Planned
Capital Embedded AR Classic R20-11
Siemens / Capital Embedded AR Classic R20-11
 vers:all/<V2303
Mitigation
Mitigation
Vendor Fix
CVE-2021-31883
7.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected products
Product Identifier Version Remediation
Capital Embedded AR Classic 431-422
Siemens / Capital Embedded AR Classic 431-422
 vers:all/*
Mitigation
Mitigation
No Fix Planned
Capital Embedded AR Classic R20-11
Siemens / Capital Embedded AR Classic R20-11
 vers:all/<V2303
Mitigation
Mitigation
Vendor Fix
CVE-2021-31889
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-191 - Integer Underflow (Wrap or Wraparound)
Affected products
Product Identifier Version Remediation
Capital Embedded AR Classic 431-422
Siemens / Capital Embedded AR Classic 431-422
 vers:all/*
Mitigation
No Fix Planned
Capital Embedded AR Classic R20-11
Siemens / Capital Embedded AR Classic R20-11
 vers:all/<V2303
Mitigation
Vendor Fix
CVE-2021-31890
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-240 - Improper Handling of Inconsistent Structural Elements
Affected products
Product Identifier Version Remediation
Capital Embedded AR Classic 431-422
Siemens / Capital Embedded AR Classic 431-422
 vers:all/*
Mitigation
No Fix Planned
Capital Embedded AR Classic R20-11
Siemens / Capital Embedded AR Classic R20-11
 vers:all/<V2303
Mitigation
Vendor Fix
References
To clipboard 

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited. (TLPv2: TLP:CLEAR)",
      "tlp": {
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    "notes": [
      {
        "category": "summary",
        "text": "Multiple vulnerabilities (also known as \"NUCLEUS:13\") have be identified in the Nucleus RTOS (real-time operating system) and reported in the Siemens Security Advisory SSA-044112: \nhttps://cert-portal.siemens.com/productcert/html/ssa-044112.html.\nCapital Embedded AR Classic uses an affected version of the Nucleus software and inherently contains several of these vulnerabilities.\n\nSiemens has released a new version for Capital Embedded AR Classic R20-11 and recommends to update to the latest version. 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"
      },
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      {
        "category": "legal_disclaimer",
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    ],
    "publisher": {
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      "namespace": "https://www.siemens.com"
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    "references": [
      {
        "category": "self",
        "summary": "SSA-620288: Multiple Vulnerabilities (NUCLEUS:13) in Capital Embedded AR Classic - HTML Version",
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      },
      {
        "category": "self",
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        "url": "https://cert-portal.siemens.com/productcert/csaf/ssa-620288.json"
      }
    ],
    "title": "SSA-620288: Multiple Vulnerabilities (NUCLEUS:13) in Capital Embedded AR Classic",
    "tracking": {
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      "id": "SSA-620288",
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      "revision_history": [
        {
          "date": "2021-12-14T00:00:00Z",
          "legacy_version": "1.0",
          "number": "1",
          "summary": "Publication Date"
        },
        {
          "date": "2022-11-08T00:00:00Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Removed CVE-2021-31884 as Capital VSTAR is not affected"
        },
        {
          "date": "2024-10-08T00:00:00Z",
          "legacy_version": "1.2",
          "number": "3",
          "summary": "Renamed Capital VSTAR to Capital Embedded AR Classic; added fix for version line R20-11"
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        {
          "date": "2025-03-11T00:00:00Z",
          "legacy_version": "1.3",
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        "id": "CWE-843",
        "name": "Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "ICMP echo packets with fake IP options allow sending ICMP echo reply messages to arbitrary hosts on the network. (FSMD-2021-0004)",
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        }
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        "known_affected": [
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          "product_ids": [
            "1",
            "2"
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            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-31344"
    },
    {
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      "cwe": {
        "id": "CWE-1284",
        "name": "Improper Validation of Specified Quantity in Input"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The total length of an UDP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on a user-defined applications that runs on top of the UDP protocol. (FSMD-2021-0006)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Apply network segmentation and put the ECUs behind properly configured gateways/firewalls",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2303 or later version",
          "product_ids": [
            "2"
          ]
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      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-31345"
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    {
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      "cwe": {
        "id": "CWE-1284",
        "name": "Improper Validation of Specified Quantity in Input"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The total length of an ICMP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on the network buffer organization in memory. (FSMD-2021-0007)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
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          "category": "mitigation",
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          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1"
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        {
          "category": "vendor_fix",
          "details": "Update to V2303 or later version",
          "product_ids": [
            "2"
          ]
        }
      ],
      "scores": [
        {
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            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-31346"
    },
    {
      "cve": "CVE-2021-31881",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "summary",
          "text": "When processing a DHCP OFFER message, the DHCP client application does not validate the length of the Vendor option(s), leading to Denial-of-Service conditions. (FSMD-2021-0008)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE, Desigo, and TALON products.)",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "mitigation",
          "details": "Disable DHCP client functionality, if feature not used, by deselecting the TcpIpIpV4General/TcpIpDhcpClientEnabled Pre-Compile configuration option",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1"
          ]
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        {
          "category": "vendor_fix",
          "details": "Update to V2303 or later version",
          "product_ids": [
            "2"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-31881"
    },
    {
      "cve": "CVE-2021-31882",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The DHCP client application does not validate the length of the Domain Name Server IP option(s) (0x06) when processing DHCP ACK packets. This may lead to Denial-of-Service conditions. (FSMD-2021-0011)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE, Desigo, and TALON products.)",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "mitigation",
          "details": "Disable DHCP client functionality, if feature not used, by deselecting the TcpIpIpV4General/TcpIpDhcpClientEnabled Pre-Compile configuration option",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2303 or later version",
          "product_ids": [
            "2"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-31882"
    },
    {
      "cve": "CVE-2021-31883",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "notes": [
        {
          "category": "summary",
          "text": "When processing a DHCP ACK message, the DHCP client application does not validate the length of the Vendor option(s), leading to Denial-of-Service conditions. (FSMD-2021-0013)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Disable the DHCP client and use static IP address configuration instead (Note that the DHCP client is disabled by default on APOGEE, Desigo, and TALON products.)",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "mitigation",
          "details": "Disable DHCP client functionality, if feature not used, by deselecting the TcpIpIpV4General/TcpIpDhcpClientEnabled Pre-Compile configuration option",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2303 or later version",
          "product_ids": [
            "2"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-31883"
    },
    {
      "cve": "CVE-2021-31889",
      "cwe": {
        "id": "CWE-191",
        "name": "Integer Underflow (Wrap or Wraparound)"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Malformed TCP packets with a corrupted SACK option leads to Information Leaks and Denial-of-Service conditions. (FSMD-2021-0015)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Apply network segmentation and put the ECUs behind properly configured gateways/firewalls",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2303 or later version",
          "product_ids": [
            "2"
          ]
        }
      ],
      "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",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-31889"
    },
    {
      "cve": "CVE-2021-31890",
      "cwe": {
        "id": "CWE-240",
        "name": "Improper Handling of Inconsistent Structural Elements"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The total length of an TCP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on the network buffer organization in memory. (FSMD-2021-0017)",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "1",
          "2"
        ]
      },
      "remediations": [
        {
          "category": "mitigation",
          "details": "Apply network segmentation and put the ECUs behind properly configured gateways/firewalls",
          "product_ids": [
            "1",
            "2"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Currently no fix is planned",
          "product_ids": [
            "1"
          ]
        },
        {
          "category": "vendor_fix",
          "details": "Update to V2303 or later version",
          "product_ids": [
            "2"
          ]
        }
      ],
      "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",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "title": "CVE-2021-31890"
    }
  ]
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.