FKIE_CVE-2016-5361

Vulnerability from fkie_nvd - Published: 2016-06-16 14:59 - Updated: 2026-06-17 00:49
Severity
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
programs/pluto/ikev1.c in libreswan before 3.17 retransmits in initial-responder states, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed UDP packet. NOTE: the original behavior complies with the IKEv1 protocol, but has a required security update from the libreswan vendor; as of 2016-06-10, it is expected that several other IKEv1 implementations will have vendor-required security updates, with separate CVE IDs assigned to each.
References
cve@mitre.orghttp://rhn.redhat.com/errata/RHSA-2016-2603.html
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2016/06/10/4
cve@mitre.orghttps://github.com/libreswan/libreswan/commit/152d6d95632d8b9477c170f1de99bcd86d7fb1d6Patch, Vendor Advisory
cve@mitre.orghttps://lists.libreswan.org/pipermail/swan-dev/2016-March/001394.html
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2016-2603.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/06/10/4
af854a3a-2127-422b-91ae-364da2661108https://github.com/libreswan/libreswan/commit/152d6d95632d8b9477c170f1de99bcd86d7fb1d6Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.libreswan.org/pipermail/swan-dev/2016-March/001394.html
Impacted products
Vendor Product Version
libreswan libreswan *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libreswan:libreswan:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0FF60B77-0610-4B1F-A8B0-012DC533C144",
              "versionEndIncluding": "3.16",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "programs/pluto/ikev1.c in libreswan before 3.17 retransmits in initial-responder states, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed UDP packet. NOTE: the original behavior complies with the IKEv1 protocol, but has a required security update from the libreswan vendor; as of 2016-06-10, it is expected that several other IKEv1 implementations will have vendor-required security updates, with separate CVE IDs assigned to each."
    },
    {
      "lang": "es",
      "value": "programs/pluto/ikev1.c en libreswan en versiones anteriores a 3.17 retransmite en estados inicial-respuesta, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (amplificaci\u00f3n de tr\u00e1fico) a trav\u00e9s de un paquete UDP suplantado. NOTA: el comportamiento original cumple con el protocolo IKEv1, pero tiene una actualizaci\u00f3n de seguridad requerida por el vendedor de libreswan; a partir de 2016-06-10, se espera que otras varias implementaciones IKEv1 tengan actualizaciones de seguridad requeridas por el vendedor, con separadas CVEs IDs asignadas a cada una."
    }
  ],
  "id": "CVE-2016-5361",
  "lastModified": "2026-06-17T00:49:17.090",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-06-16T14:59:51.890",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://rhn.redhat.com/errata/RHSA-2016-2603.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.openwall.com/lists/oss-security/2016/06/10/4"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/libreswan/libreswan/commit/152d6d95632d8b9477c170f1de99bcd86d7fb1d6"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.libreswan.org/pipermail/swan-dev/2016-March/001394.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://rhn.redhat.com/errata/RHSA-2016-2603.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2016/06/10/4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/libreswan/libreswan/commit/152d6d95632d8b9477c170f1de99bcd86d7fb1d6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.libreswan.org/pipermail/swan-dev/2016-March/001394.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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