certfr_avis - certfr-2025-avi-0470

CERTFR-2025-AVI-0470

Vulnerability from certfr_avis

Une vulnérabilité a été découverte dans les produits Moxa. Elle permet à un attaquant de provoquer un déni de service à distance.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
Moxa	N/A	ICS-G7848A Series versions 5.10 et antérieures sans les derniers correctifs de sécurité
Moxa	N/A	ICS-G7852A Series versions 5.10 et antérieures sans les derniers correctifs de sécurité
Moxa	N/A	ICS-G7850A Series versions 5.10 et antérieures sans les derniers correctifs de sécurité

References

Title

Publication Time

Tags

Bulletin de sécurité Moxa mpsa-258261

2025-06-02

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "ICS-G7848A Series versions 5.10 et ant\u00e9rieures sans les derniers correctifs de s\u00e9curit\u00e9",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Moxa",
          "scada": true
        }
      }
    },
    {
      "description": "ICS-G7852A Series\u00a0versions 5.10 et ant\u00e9rieures sans les derniers correctifs de s\u00e9curit\u00e9",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Moxa",
          "scada": true
        }
      }
    },
    {
      "description": "ICS-G7850A Series versions 5.10 et ant\u00e9rieures  sans les derniers correctifs de s\u00e9curit\u00e9",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Moxa",
          "scada": true
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2002-20001",
      "url": "https://www.cve.org/CVERecord?id=CVE-2002-20001"
    }
  ],
  "initial_release_date": "2025-06-02T00:00:00",
  "last_revision_date": "2025-06-02T00:00:00",
  "links": [],
  "reference": "CERTFR-2025-AVI-0470",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2025-06-02T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans les produits Moxa. Elle permet \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance.",
  "title": "Vuln\u00e9rabilit\u00e9 dans les produits Moxa",
  "vendor_advisories": [
    {
      "published_at": "2025-06-02",
      "title": "Bulletin de s\u00e9curit\u00e9 Moxa mpsa-258261",
      "url": "https://www.moxa.com/en/support/product-support/security-advisory/mpsa-258261-cve-2002-20001-resource-exhaustion-vulnerability-in-diffie-hellman-key-exchange-protocol"
    }
  ]
}

CVE-2002-20001 (GCVE-0-2002-20001)

Vulnerability from cvelistv5

Published

2021-11-11 00:00

Modified

2025-02-13 16:27

Severity ?

CWE

Summary

The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE.

References

URL

Tags

	https://github.com/Balasys/dheater
	https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol
	https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/
	https://github.com/mozilla/ssl-config-generator/issues/162
	https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf
	https://www.suse.com/support/kb/doc/?id=000020510
	https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/
	https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt
	https://support.f5.com/csp/article/K83120834
	https://dheatattack.com
	https://gitlab.com/dheatattack/dheater
	https://dheatattack.gitlab.io/
	https://ieeexplore.ieee.org/document/10374117

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-08T04:06:55.288Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/Balasys/dheater"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/mozilla/ssl-config-generator/issues/162"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.suse.com/support/kb/doc/?id=000020510"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://support.f5.com/csp/article/K83120834"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dheatattack.com"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://gitlab.com/dheatattack/dheater"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dheatattack.gitlab.io/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://ieeexplore.ieee.org/document/10374117"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side) to send arbitrary numbers that are actually not public keys, and trigger expensive server-side DHE modular-exponentiation calculations, aka a D(HE)at or D(HE)ater attack. The client needs very little CPU resources and network bandwidth. The attack may be more disruptive in cases where a client can require a server to select its largest supported key size. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-04-23T06:51:09.585Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/Balasys/dheater"
        },
        {
          "url": "https://www.researchgate.net/profile/Anton-Stiglic-2/publication/2401745_Security_Issues_in_the_Diffie-Hellman_Key_Agreement_Protocol"
        },
        {
          "url": "https://www.reddit.com/r/netsec/comments/qdoosy/server_overload_by_enforcing_dhe_key_exchange/"
        },
        {
          "url": "https://github.com/mozilla/ssl-config-generator/issues/162"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-506569.pdf"
        },
        {
          "url": "https://www.suse.com/support/kb/doc/?id=000020510"
        },
        {
          "url": "https://www.openssl.org/blog/blog/2022/10/21/tls-groups-configuration/"
        },
        {
          "url": "https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2022-004.txt"
        },
        {
          "url": "https://support.f5.com/csp/article/K83120834"
        },
        {
          "url": "https://dheatattack.com"
        },
        {
          "url": "https://gitlab.com/dheatattack/dheater"
        },
        {
          "url": "https://dheatattack.gitlab.io/"
        },
        {
          "url": "https://ieeexplore.ieee.org/document/10374117"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2002-20001",
    "datePublished": "2021-11-11T00:00:00.000Z",
    "dateReserved": "2021-11-11T00:00:00.000Z",
    "dateUpdated": "2025-02-13T16:27:06.803Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CERTFR-2025-AVI-0470

Vulnerability from certfr_avis

Solutions

CVE-2002-20001 (GCVE-0-2002-20001)

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature