{
  "schema_version": "1.7.0",
  "id": "USN-2811-1",
  "summary": "strongswan vulnerability",
  "details": "It was discovered that the strongSwan eap-mschapv2 plugin incorrectly\nhandled state. A remote attacker could use this issue to bypass\nauthentication.\n",
  "aliases": [],
  "upstream": [
    "UBUNTU-CVE-2015-8023"
  ],
  "related": [],
  "published": "2015-11-16T18:06:24Z",
  "modified": "2026-02-10T04:40:56Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "strongswan",
        "purl": "pkg:deb/ubuntu/strongswan@5.1.2-0ubuntu2.4?arch=source&distro=trusty"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.1.2-0ubuntu2.4"
            }
          ]
        }
      ],
      "versions": [
        "4.6.4-9",
        "5.1.0-2",
        "5.1.0-3",
        "5.1.1-0ubuntu1",
        "5.1.1-0ubuntu2",
        "5.1.1-0ubuntu3",
        "5.1.1-0ubuntu4",
        "5.1.1-0ubuntu5",
        "5.1.1-0ubuntu7",
        "5.1.1-0ubuntu14",
        "5.1.1-0ubuntu17",
        "5.1.2~dr3+git20130120-0ubuntu2",
        "5.1.2~dr3+git20130120-0ubuntu3",
        "5.1.2~rc1-0ubuntu3",
        "5.1.2~rc1-0ubuntu4",
        "5.1.2~rc2-0ubuntu2",
        "5.1.2-0ubuntu1",
        "5.1.2-0ubuntu2",
        "5.1.2-0ubuntu2.2",
        "5.1.2-0ubuntu2.3"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libstrongswan",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-ike",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-ikev1",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-ikev2",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-nm",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-af-alg",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-agent",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-attr-sql",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-certexpire",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-coupling",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-curl",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-dhcp",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-dnscert",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-dnskey",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-duplicheck",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-aka",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-aka-3gpp2",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-dynamic",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-gtc",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-md5",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-mschapv2",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-peap",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-radius",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-sim",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-sim-file",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-sim-pcsc",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-simaka-pseudonym",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-simaka-reauth",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-simaka-sql",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-tls",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-tnc",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-eap-ttls",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-error-notify",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-farp",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-fips-prf",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-gcrypt",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-gmp",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-ipseckey",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-kernel-libipsec",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-ldap",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-led",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-load-tester",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-lookip",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-mysql",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-ntru",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-openssl",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-pgp",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-pkcs11",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-pubkey",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-radattr",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-soup",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-sql",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-sqlite",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-sshkey",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-systime-fix",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-unbound",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-unity",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-whitelist",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-xauth-eap",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-xauth-generic",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-xauth-noauth",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-plugin-xauth-pam",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-pt-tls-client",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-starter",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-tnc-base",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-tnc-client",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-tnc-ifmap",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-tnc-pdp",
            "binary_version": "5.1.2-0ubuntu2.4"
          },
          {
            "binary_name": "strongswan-tnc-server",
            "binary_version": "5.1.2-0ubuntu2.4"
          }
        ],
        "availability": "No subscription required"
      },
      "database_specific": {
        "cves_map": {
          "ecosystem": "Ubuntu:14.04:LTS",
          "cves": [
            {
              "id": "CVE-2015-8023",
              "severity": [
                {
                  "type": "Ubuntu",
                  "score": "medium"
                }
              ]
            }
          ]
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2811-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-8023"
    }
  ]
}