USN-3576-1 (UBUNTU-CVE-2016-5008)

Vulnerability from osv_ubuntu – Published: 2018-02-20 19:20 – Updated: 2026-04-22 07:36 – Source website
VLAI
Summary
libvirt vulnerabilities
Details

Vivian Zhang and Christoph Anton Mitterer discovered that libvirt incorrectly disabled password authentication when the VNC password was set to an empty string. A remote attacker could possibly use this issue to bypass authentication, contrary to expectations. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5008)

Daniel P. Berrange discovered that libvirt incorrectly handled validating SSL/TLS certificates. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 17.10. (CVE-2017-1000256)

Daniel P. Berrange and Peter Krempa discovered that libvirt incorrectly handled large QEMU replies. An attacker could possibly use this issue to cause libvirt to crash, resulting in a denial of service. (CVE-2018-5748)

Pedro Sampaio discovered that libvirt incorrectly handled the libnss_dns.so module. An attacker in a libvirt_lxc session could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-6764)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-5008",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-5748",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvirt-bin",
            "binary_version": "1.2.2-0ubuntu13.1.26"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "1.2.2-0ubuntu13.1.26"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@1.2.2-0ubuntu13.1.26?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.2-0ubuntu13.1.26"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.1-0ubuntu8",
        "1.1.1-0ubuntu9",
        "1.1.4-0ubuntu2",
        "1.1.4-0ubuntu3",
        "1.1.4-0ubuntu4",
        "1.1.4-0ubuntu5",
        "1.2.0-0ubuntu1",
        "1.2.0-0ubuntu2",
        "1.2.0-0ubuntu3",
        "1.2.1-0ubuntu1",
        "1.2.1-0ubuntu2",
        "1.2.1-0ubuntu3",
        "1.2.1-0ubuntu4",
        "1.2.1-0ubuntu5",
        "1.2.1-0ubuntu7",
        "1.2.1-0ubuntu8",
        "1.2.1-0ubuntu9",
        "1.2.1-0ubuntu10",
        "1.2.2-0ubuntu1",
        "1.2.2-0ubuntu2",
        "1.2.2-0ubuntu3",
        "1.2.2-0ubuntu4",
        "1.2.2-0ubuntu5",
        "1.2.2-0ubuntu6",
        "1.2.2-0ubuntu7",
        "1.2.2-0ubuntu8",
        "1.2.2-0ubuntu9",
        "1.2.2-0ubuntu10",
        "1.2.2-0ubuntu11",
        "1.2.2-0ubuntu12",
        "1.2.2-0ubuntu13",
        "1.2.2-0ubuntu13.1",
        "1.2.2-0ubuntu13.1.1",
        "1.2.2-0ubuntu13.1.2",
        "1.2.2-0ubuntu13.1.4",
        "1.2.2-0ubuntu13.1.5",
        "1.2.2-0ubuntu13.1.6",
        "1.2.2-0ubuntu13.1.7",
        "1.2.2-0ubuntu13.1.8",
        "1.2.2-0ubuntu13.1.9",
        "1.2.2-0ubuntu13.1.10",
        "1.2.2-0ubuntu13.1.12",
        "1.2.2-0ubuntu13.1.14",
        "1.2.2-0ubuntu13.1.16",
        "1.2.2-0ubuntu13.1.17",
        "1.2.2-0ubuntu13.1.20",
        "1.2.2-0ubuntu13.1.21",
        "1.2.2-0ubuntu13.1.22",
        "1.2.2-0ubuntu13.1.23",
        "1.2.2-0ubuntu13.1.25"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2016-5008",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-5748",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2018-6764",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libvirt-bin",
            "binary_version": "1.3.1-1ubuntu10.19"
          },
          {
            "binary_name": "libvirt0",
            "binary_version": "1.3.1-1ubuntu10.19"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "libvirt",
        "purl": "pkg:deb/ubuntu/libvirt@1.3.1-1ubuntu10.19?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.3.1-1ubuntu10.19"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.16-2ubuntu11",
        "1.2.16-2ubuntu12",
        "1.2.16-2ubuntu13",
        "1.2.16-2ubuntu14",
        "1.2.21-2ubuntu1",
        "1.2.21-2ubuntu3",
        "1.2.21-2ubuntu4",
        "1.2.21-2ubuntu5",
        "1.2.21-2ubuntu7",
        "1.2.21-2ubuntu8",
        "1.2.21-2ubuntu9",
        "1.2.21-2ubuntu10",
        "1.3.1-1ubuntu1",
        "1.3.1-1ubuntu2",
        "1.3.1-1ubuntu3",
        "1.3.1-1ubuntu4",
        "1.3.1-1ubuntu6",
        "1.3.1-1ubuntu9",
        "1.3.1-1ubuntu10",
        "1.3.1-1ubuntu10.1",
        "1.3.1-1ubuntu10.2",
        "1.3.1-1ubuntu10.3",
        "1.3.1-1ubuntu10.5",
        "1.3.1-1ubuntu10.6",
        "1.3.1-1ubuntu10.7",
        "1.3.1-1ubuntu10.8",
        "1.3.1-1ubuntu10.10",
        "1.3.1-1ubuntu10.11",
        "1.3.1-1ubuntu10.12",
        "1.3.1-1ubuntu10.13",
        "1.3.1-1ubuntu10.14",
        "1.3.1-1ubuntu10.15",
        "1.3.1-1ubuntu10.17",
        "1.3.1-1ubuntu10.18"
      ]
    }
  ],
  "aliases": [],
  "details": "Vivian Zhang and Christoph Anton Mitterer discovered that libvirt\nincorrectly disabled password authentication when the VNC password was set\nto an empty string. A remote attacker could possibly use this issue to\nbypass authentication, contrary to expectations. This issue only affected\nUbuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2016-5008)\n\nDaniel P. Berrange discovered that libvirt incorrectly handled validating\nSSL/TLS certificates. A remote attacker could possibly use this issue to\nobtain sensitive information. This issue only affected Ubuntu 17.10.\n(CVE-2017-1000256)\n\nDaniel P. Berrange and Peter Krempa discovered that libvirt incorrectly\nhandled large QEMU replies. An attacker could possibly use this issue to\ncause libvirt to crash, resulting in a denial of service. (CVE-2018-5748)\n\nPedro Sampaio discovered that libvirt incorrectly handled the libnss_dns.so\nmodule. An attacker in a libvirt_lxc session could possibly use this issue\nto execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and\nUbuntu 17.10. (CVE-2018-6764)\n",
  "id": "USN-3576-1",
  "modified": "2026-04-22T07:36:35Z",
  "published": "2018-02-20T19:20:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3576-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-5008"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-1000256"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-5748"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-6764"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libvirt vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2016-5008",
    "UBUNTU-CVE-2017-1000256",
    "UBUNTU-CVE-2018-5748",
    "UBUNTU-CVE-2018-6764"
  ]
}



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