CVE-2020-17376

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2020-08-25T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-08-26T18:45:28.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://launchpad.net/bugs/1890501"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://security.openstack.org/ossa/OSSA-2020-006.html"}, {"tags": ["x_refsource_MISC"], "url": "http://www.openwall.com/lists/oss-security/2020/08/25/4"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-17376", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://launchpad.net/bugs/1890501", "refsource": "MISC", "url": "https://launchpad.net/bugs/1890501"}, {"name": "https://security.openstack.org/ossa/OSSA-2020-006.html", "refsource": "CONFIRM", "url": "https://security.openstack.org/ossa/OSSA-2020-006.html"}, {"name": "http://www.openwall.com/lists/oss-security/2020/08/25/4", "refsource": "MISC", "url": "http://www.openwall.com/lists/oss-security/2020/08/25/4"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T13:53:16.983Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://launchpad.net/bugs/1890501"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.openstack.org/ossa/OSSA-2020-006.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2020/08/25/4"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-17376", "datePublished": "2020-08-26T18:45:28.000Z", "dateReserved": "2020-08-07T00:00:00.000Z", "dateUpdated": "2024-08-04T13:53:16.983Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*", "matchCriteriaId": "9DDF22E2-609B-449C-92C3-15F65182CD1F", "versionEndExcluding": "19.3.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:openstack:nova:*:*:*:*:*:*:*:*", "matchCriteriaId": "D3B0003D-FEEE-4C6A-A6F8-FE7AA8470AB7", "versionEndExcluding": "20.3.1", "versionStartIncluding": "20.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:openstack:nova:21.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "57ACEF3D-345D-4744-B1EC-441FEF427FA1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se detect\u00f3 un problema en la funci\u00f3n Guest.migrate en el archivo virt/libvirt/guest.py en OpenStack Nova versiones anteriores a 19.3.1, versiones 20.x anteriores a 20.3.1 y 21.0.0. Al realizar un reinicio suave de una instancia que se ha sometido previamente a una migraci\u00f3n en vivo, un usuario puede conseguir acceso a los dispositivos host de destino que comparten las mismas rutas que los dispositivos host a los que la m\u00e1quina virtual hace referencia anteriormente en el host de origen. Esto puede incluir dispositivos de bloque que se asignan a diferentes vol\u00famenes de Cinder tanto en el destino como en el origen. Solo est\u00e1n afectadas las implementaciones que permiten conexiones basadas en host (por ejemplo, dispositivos root y ef\u00edmeros)"}], "id": "CVE-2020-17376", "lastModified": "2026-06-17T02:58:49.160", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.5, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-08-26T19:15:14.580", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2020/08/25/4"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://launchpad.net/bugs/1890501"}, {"source": "cve@mitre.org", "tags": ["Patch", "Vendor Advisory"], "url": "https://security.openstack.org/ossa/OSSA-2020-006.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2020/08/25/4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://launchpad.net/bugs/1890501"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://security.openstack.org/ossa/OSSA-2020-006.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-611"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "This issue was discovered by Lee Yarwood (Red Hat) and Tadayoshi Hosoya (NEC).", "affected_release": [{"advisory": "RHSA-2020:3711", "cpe": "cpe:/a:redhat:openstack:10::el7", "package": "openstack-nova-1:14.1.0-65.el7ost", "product_name": "Red Hat OpenStack Platform 10.0 (Newton)", "release_date": "2020-09-10T00:00:00Z"}, {"advisory": "RHSA-2020:3708", "cpe": "cpe:/a:redhat:openstack:13::el7", "package": "openstack-nova-1:17.0.13-24.el7ost", "product_name": "Red Hat OpenStack Platform 13.0 (Queens)", "release_date": "2020-09-10T00:00:00Z"}, {"advisory": "RHSA-2020:3708", "cpe": "cpe:/a:redhat:openstack:13::el7", "package": "openstack-nova-1:17.0.13-24.el7ost", "product_name": "Red Hat OpenStack Platform 13.0 (Queens) for RHEL 7.6 EUS", "release_date": "2020-09-10T00:00:00Z"}, {"advisory": "RHSA-2020:3706", "cpe": "cpe:/a:redhat:openstack:15::el8", "package": "openstack-nova-1:19.1.0-0.20200207070459.bf9d9e5.el8ost", "product_name": "Red Hat OpenStack Platform 15.0 (Stein)", "release_date": "2020-09-10T00:00:00Z"}, {"advisory": "RHSA-2020:3704", "cpe": "cpe:/a:redhat:openstack:16::el8", "package": "openstack-nova-1:20.1.2-0.20200401205215.28324e6.el8ost", "product_name": "Red Hat OpenStack Platform 16.0 (Train)", "release_date": "2020-09-10T00:00:00Z"}, {"advisory": "RHSA-2020:3702", "cpe": "cpe:/a:redhat:openstack:16.1::el8", "package": "openstack-nova-1:20.3.1-0.20200626213436.38ee1f3.el8ost", "product_name": "Red Hat OpenStack Platform 16.1", "release_date": "2020-09-10T00:00:00Z"}], "bugzilla": {"description": "openstack-nova: Soft reboot after live-migration reverts instance to original source domain XML", "id": "1869426", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1869426"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L", "status": "verified"}, "cwe": "CWE-200", "details": ["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.", "An information disclosure flaw was found in the live migration feature of OpenStack Nova. A user may gain access to destination host devices with the same path as those on the source host. This flaw allows an attacker to perform a soft reboot of an instance that has previously undergone live migration. The greatest impact of this vulnerability is to the confidentiality of many possible device types, but those at special risk are block storage devices, potentially revealing data of other users."], "mitigation": {"lang": "en:us", "value": "Public clouds using non-default configurations (allowing untrusted users to initiate live migrations) face significant additional risk. If it is not possible to immediately apply patches, a temporary policy change is recommended: disable soft reboots by setting wait_soft_reboot_seconds to zero. This effectively forces any soft reboots to instead be overridden as a hard reboot. Find more information in Nova's documentation https://docs.openstack.org/nova/ussuri/configuration/config.html\nDeployments which use unique device paths for each cinder volume face an extremely low risk of being affected by this flaw."}, "name": "CVE-2020-17376", "package_state": [{"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Affected", "package_name": "openstack-nova", "product_name": "Red Hat OpenStack Platform 16.2"}], "public_date": "2020-08-25T15:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-17376\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-17376\nhttps://bugs.launchpad.net/nova/+bug/1890501"], "statement": "Red Hat OpenStack Platform 10 was initially marked as affected, however it has since been discovered that the flaw is actually not present in this version. For this reason, the update in RHSA-2020:3711 can be either applied or ignored for RHOSP 10.", "threat_severity": "Important"}

{}