fkie_cve-2023-46849
Vulnerability from fkie_nvd
Published
2023-11-11 01:15
Modified
2025-06-11 15:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.
References
security@openvpn.nethttps://community.openvpn.net/openvpn/wiki/CVE-2023-46849Vendor Advisory
security@openvpn.nethttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/Mailing List
security@openvpn.nethttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/
security@openvpn.nethttps://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/Vendor Advisory
security@openvpn.nethttps://www.debian.org/security/2023/dsa-5555Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://community.openvpn.net/openvpn/wiki/CVE-2023-46849Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/Mailing List
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/
af854a3a-2127-422b-91ae-364da2661108https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2023/dsa-5555Third Party Advisory
Impacted products
Vendor Product Version
openvpn openvpn *
openvpn openvpn_access_server *
openvpn openvpn_access_server 2.12.0
openvpn openvpn_access_server 2.12.1
debian debian_linux 12.0
fedoraproject fedora 39


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:*",
              "matchCriteriaId": "3A398A7A-395F-4CA8-9D72-1DDD337D5074",
              "versionEndIncluding": "2.6.6",
              "versionStartIncluding": "2.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "54464223-5988-40E7-B94B-D7B8DE999704",
              "versionEndIncluding": "2.11.3",
              "versionStartIncluding": "2.11.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn_access_server:2.12.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "F8A71564-0966-47F0-BB81-B6BFA071E402",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn_access_server:2.12.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "AC187755-A908-4CD5-8F35-869EA5D9A3B7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "46D69DCC-AE4D-4EA5-861C-D60951444C6C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*",
              "matchCriteriaId": "B8EDB836-4E6A-4B71-B9B2-AA3E03E0F646",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service."
    },
    {
      "lang": "es",
      "value": "El uso de la opci\u00f3n --fragment en ciertas configuraciones de OpenVPN versi\u00f3n 2.6.0 a 2.6.6 permite a un atacante desencadenar un comportamiento de divisi\u00f3n por cero que podr\u00eda provocar un bloqueo de la aplicaci\u00f3n y provocar una denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2023-46849",
  "lastModified": "2025-06-11T15:15:26.793",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2023-11-11T01:15:07.270",
  "references": [
    {
      "source": "security@openvpn.net",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://community.openvpn.net/openvpn/wiki/CVE-2023-46849"
    },
    {
      "source": "security@openvpn.net",
      "tags": [
        "Mailing List"
      ],
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/"
    },
    {
      "source": "security@openvpn.net",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/"
    },
    {
      "source": "security@openvpn.net",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/"
    },
    {
      "source": "security@openvpn.net",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2023/dsa-5555"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://community.openvpn.net/openvpn/wiki/CVE-2023-46849"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List"
      ],
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2023/dsa-5555"
    }
  ],
  "sourceIdentifier": "security@openvpn.net",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-369"
        }
      ],
      "source": "security@openvpn.net",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-369"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.