{"cve":"CVE-2020-17376","nvd":{"published":"2020-08-26T19:15:14.580","modified":"2026-06-17T02:58:49.160","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","score":8.3},"cwes":["CWE-611"],"references":["http://www.openwall.com/lists/oss-security/2020/08/25/4","https://launchpad.net/bugs/1890501","https://security.openstack.org/ossa/OSSA-2020-006.html","http://www.openwall.com/lists/oss-security/2020/08/25/4","https://launchpad.net/bugs/1890501"],"products":["openstack:nova"],"source":"nvd","synced_at":"2026-10-19T21:09:20.498348299+00:00"},"epss":{"cve":"CVE-2020-17376","score":0.01729,"percentile":0.77591,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c7w7-9c85-4qxv","url":"https://osv.dev/vulnerability/GHSA-c7w7-9c85-4qxv","summary":"OpenStack Nova Live migration fails to update persistent domain XML","modified":"2024-09-26T14:59:07.782871Z","packages":[{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["<19.3.1"],"fixed":["19.3.1"]},{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":[">=20.0.0 <20.3.1"],"fixed":["20.3.1"]},{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["21.0.0"],"fixed":[]}]},{"id":"PYSEC-2020-243","url":"https://osv.dev/vulnerability/PYSEC-2020-243","summary":"","modified":"2026-06-10T17:02:26.178450203Z","packages":[{"ecosystem":"PyPI","name":"nova","purl":"pkg:pypi/nova","ranges":["<19.3.1",">=20.0.0 <20.3.1",">=21.0.0 <21.1.0"],"fixed":["19.3.1","20.3.1","21.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}