Vulnerability-Lookup

JVNDB-2023-001215

Vulnerability from jvndb - Published: 2023-02-13 05:18 - Updated:2024-06-14 06:45

Severity

5.9 (Medium) - cvssV3_0 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Summary

Zuken Elmic KASAGO uses insufficient random values for TCP Initial Sequence Numbers

Details

Zuken Elmic KASAGO, TCP/IP protocol stack for embedded systems, uses its own random number generator function when generating TCP initial sequence numbers, which leads to use insufficient random values (CWE-330). Zuken Elmic reported this vulnerability to JPCERT/CC to notify users of its solution through JVN.

References

Type

URL

	JVN	http://jvn.jp/en/vu/JVNVU99551468/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2022-43501
	NVD	https://nvd.nist.gov/vuln/detail/CVE-2022-43501
	Use of Insufficiently Random Values(CWE-330)	https://cwe.mitre.org/data/definitions/330.html

Impacted products

Vendor

Product

	ZUKEN ELMIC,INC	KASAGO IPv4
	ZUKEN ELMIC,INC	KASAGO IPv4 Light
	ZUKEN ELMIC,INC	KASAGO IPv6/v4 Dual
	ZUKEN ELMIC,INC	KASAGO mobile IPv6

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2023/JVNDB-2023-001215.html",
  "dc:date": "2024-06-14T15:45+09:00",
  "dcterms:issued": "2023-02-13T14:18+09:00",
  "dcterms:modified": "2024-06-14T15:45+09:00",
  "description": "Zuken Elmic KASAGO, TCP/IP protocol stack for embedded systems, uses its own random number generator function when generating TCP initial sequence numbers, which leads to use insufficient random values (CWE-330).\r\n\r\nZuken Elmic reported this vulnerability to JPCERT/CC to notify users of its solution through JVN.",
  "link": "https://jvndb.jvn.jp/en/contents/2023/JVNDB-2023-001215.html",
  "sec:cpe": [
    {
      "#text": "cpe:/a:elwsc:kasago_ipv4",
      "@product": "KASAGO IPv4",
      "@vendor": "ZUKEN ELMIC,INC",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/a:elwsc:kasago_ipv4_light",
      "@product": "KASAGO IPv4 Light",
      "@vendor": "ZUKEN ELMIC,INC",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/a:elwsc:kasago_ipv6%2fv4_dual",
      "@product": "KASAGO IPv6/v4 Dual",
      "@vendor": "ZUKEN ELMIC,INC",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/a:elwsc:kasago_mobile_ipv6",
      "@product": "KASAGO mobile IPv6",
      "@vendor": "ZUKEN ELMIC,INC",
      "@version": "2.2"
    }
  ],
  "sec:cvss": {
    "@score": "5.9",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2023-001215",
  "sec:references": [
    {
      "#text": "http://jvn.jp/en/vu/JVNVU99551468/index.html",
      "@id": "JVNVU#99551468",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2022-43501",
      "@id": "CVE-2022-43501",
      "@source": "CVE"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2022-43501",
      "@id": "CVE-2022-43501",
      "@source": "NVD"
    },
    {
      "#text": "https://cwe.mitre.org/data/definitions/330.html",
      "@id": "CWE-330",
      "@title": "Use of Insufficiently Random Values(CWE-330)"
    }
  ],
  "title": "Zuken Elmic KASAGO uses insufficient random values for TCP Initial Sequence Numbers"
}

CVE-2022-43501 (GCVE-0-2022-43501)

Vulnerability from cvelistv5 – Published: 2023-02-10 00:00 – Updated: 2025-03-24 18:11

Summary

KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-24 18:11 UTC

CWE

CWE-330 - Use of Insufficiently Random Values

Assigner

jpcert jpcert root Scorecard

References

2 references

URL	Tags
https://www.elwsc.co.jp/news/6352
https://jvn.jp/en/vu/JVNVU99551468/	third-party-advisory

Impacted products

4 products

Vendor	Product	Version
ZUKEN Elmic	Kasago IPv6/v4 Dual	Affected: prior to Ver6.0.1.34
ZUKEN Elmic	Kasago IPv4	Affected: prior to Ver6.0.1.34
ZUKEN Elmic	Kasago IPv4 Light	Affected: prior to Ver6.0.1.34
ZUKEN Elmic	Kasago mobile IPv6	Affected: prior to Ver6.0.1.34

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T13:32:59.196Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.elwsc.co.jp/news/6352"
          },
          {
            "name": "Zuken Elmic KASAGO uses insufficient random values for TCP Initial Sequence Numbers",
            "tags": [
              "third-party-advisory",
              "x_transferred"
            ],
            "url": "https://jvn.jp/en/vu/JVNVU99551468/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-43501",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-24T18:11:00.523781Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-03-24T18:11:03.974Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Kasago IPv6/v4 Dual",
          "vendor": "ZUKEN Elmic",
          "versions": [
            {
              "status": "affected",
              "version": "prior to Ver6.0.1.34"
            }
          ]
        },
        {
          "product": "Kasago IPv4",
          "vendor": "ZUKEN Elmic",
          "versions": [
            {
              "status": "affected",
              "version": "prior to Ver6.0.1.34"
            }
          ]
        },
        {
          "product": "Kasago IPv4 Light",
          "vendor": "ZUKEN Elmic",
          "versions": [
            {
              "status": "affected",
              "version": "prior to Ver6.0.1.34"
            }
          ]
        },
        {
          "product": "Kasago mobile IPv6",
          "vendor": "ZUKEN Elmic",
          "versions": [
            {
              "status": "affected",
              "version": "prior to Ver6.0.1.34"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "KASAGO TCP/IP stack provided by Zuken Elmic generates ISNs(Initial Sequence Number) for TCP connections from an insufficiently random source. An attacker may be able to determine the ISN of the current or future TCP connections and either hijack existing ones or spoof future ones."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-330",
              "description": "CWE-330: Use of Insufficiently Random Values",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-02-10T00:00:00.000Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://www.elwsc.co.jp/news/6352"
        },
        {
          "name": "Zuken Elmic KASAGO uses insufficient random values for TCP Initial Sequence Numbers",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://jvn.jp/en/vu/JVNVU99551468/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2022-43501",
    "datePublished": "2023-02-10T00:00:00.000Z",
    "dateReserved": "2022-12-09T00:00:00.000Z",
    "dateUpdated": "2025-03-24T18:11:03.974Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

JVNDB-2023-001215

CVE-2022-43501 (GCVE-0-2022-43501)

Tags

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Nomenclature

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