Security advisory

{
  "id": "d54249b99d8ca421b592145a0223275df6f6224c6b2845e7cd23b876efde141d",
  "url": "https://osv.dev/vulnerability/CVE-2020-17376",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-17376",
    "summary": "An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths as host devices previously referenced by the virtual machine on the source host. This can include block devices that map to different Cinder volumes at the destination than at the source. Only deployments allowing host-based connections (for instance, root and ephemeral devices) are affected.",
    "evidence": "osv:CVE-2020-17376",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-17376",
      "aliases": [
        "CVE-2020-17376",
        "GHSA-c7w7-9c85-4qxv",
        "PYSEC-2020-243"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openstack/nova",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a50fb46df8b328e7585b6eb5c1589e9ea1e41e80"
                },
                {
                  "introduced": "dd3cc59ccf8c963e078359d4b27dacf7d54a14ee"
                },
                {
                  "last_affected": "dd3cc59ccf8c963e078359d4b27dacf7d54a14ee"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "19.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:openstack:nova:21.0.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "21.0.0"
                      },
                      {
                        "last_affected": "21.0.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "21.0.0",
            "19.3.0",
            "21.0.0.0rc2",
            "19.2.0",
            "19.1.0",
            "19.0.3",
            "19.0.2",
            "19.0.1",
            "19.0.0.0rc2",
            "19.0.0",
            "19.0.0.0rc1",
            "18.0.0.0rc1",
            "18.0.0.0b3",
            "18.0.0.0b2",
            "18.0.0.0b1",
            "17.0.0.0b3",
            "17.0.0.0rc1",
            "17.0.0.0b2",
            "17.0.0.0b1",
            "16.0.0.0rc1",
            "16.0.0.0b3",
            "16.0.0.0b2",
            "16.0.0.0b1",
            "15.0.0.0rc1",
            "15.0.0.0b3",
            "15.0.0.0b2",
            "15.0.0.0b1",
            "14.0.0.0rc1",
            "14.0.0.0b3",
            "14.0.0.0b2",
            "14.0.0.0b1",
            "13.0.0.0rc1",
            "13.0.0.0b3",
            "13.0.0.0b2",
            "13.0.0.0b1",
            "12.0.0.0rc1",
            "12.0.0.0b3",
            "12.0.0.0b2",
            "12.0.0.0b1",
            "12.0.0a0",
            "2015.1.0rc1",
            "2015.1.0b3",
            "2015.1.0b2",
            "2015.1.0b1",
            "2014.2.rc1",
            "2014.2.b3",
            "2014.2.b2",
            "2014.2.b1",
            "2014.1.rc1",
            "2014.1.b3",
            "2014.1.b2",
            "2014.1.b1",
            "2013.2.rc1",
            "2013.2.b3",
            "2013.1.rc1",
            "folsom-2",
            "folsom-1",
            "essex-1",
            "diablo-1",
            "2011.2",
            "2011.2rc1",
            "2011.2gamma1",
            "2011.1rc1",
            "2011.1",
            "2010.1",
            "0.9.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-17376.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:23.799446805Z",
      "provider": "osv",
      "references": [
        "https://security.openstack.org/ossa/OSSA-2020-006.html",
        "https://launchpad.net/bugs/1890501"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "openstack:nova",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "20.0.0"
                  },
                  {
                    "fixed": "20.3.1"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-17376",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431009,
  "published_at": "2020-08-26T19:15:14.58+00:00"
}