« Back to list

CVE-2015-3240

Status: ModifiedMedium (4.3)—

The pluto IKE daemon in libreswan before 3.15 and Openswan before 2.6.45, when built with NSS, allows remote attackers to cause a denial of service (assertion failure and daemon restart) via a zero DH g^x value in a KE payload in a IKE packet.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Libreswan — Libreswan

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2015-3240",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-11-09T16:59:01.557",
  "references": [
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2015-1979.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/77536",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1033418",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://libreswan.org/security/CVE-2015-3240/CVE-2015-3240.txt",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://lists.openswan.org/pipermail/users/2015-August/023401.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://security.gentoo.org/glsa/201603-13",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://rhn.redhat.com/errata/RHSA-2015-1979.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/77536",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id/1033418",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://libreswan.org/security/CVE-2015-3240/CVE-2015-3240.txt",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.openswan.org/pipermail/users/2015-August/023401.html",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/201603-13",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-189"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The pluto IKE daemon in libreswan before 3.15 and Openswan before 2.6.45, when built with NSS, allows remote attackers to cause a denial of service (assertion failure and daemon restart) via a zero DH g^x value in a KE payload in a IKE packet."
    },
    {
      "lang": "es",
      "value": "El demonio pluto IKE en libreswan en versiones anteriores a 3.15 y Openswan en versiones anteriores a 2.6.45, cuando ha sido construido con NSS, permite a atacantes remotos causar una denegación de servicio (fallo de aserción y reinicio de demonio) a través de un valor zero DH g^x en un payload KE en un paquete IKE."
    }
  ],
  "lastModified": "2026-06-17T00:25:36.183",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libreswan:libreswan:3.14:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1172BCE5-FFD0-4D83-AEA4-84F469AB5005"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}