{"id":"CVE-2017-18191","aliases":["DEBIAN-CVE-2017-18191","EUVD-2022-3763","GHSA-ffmh-r67w-m88f","PYSEC-2026-689","RHSA-2018:2332","RHSA-2018:2714","RHSA-2018:2855","SUSE-SU-2018:1448-1","UBUNTU-CVE-2017-18191","USN-5866-1"],"status":"published","title":"OpenStack Nova Denial of service attack on the compute host","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03715,"percentile":0.89844,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2018-02-19T17:00:00Z","modified":"2026-10-24T10:30:26Z","fixes":[{"ecosystem":"PyPI","package":"nova","fixed_in":["15.1.1","16.1.2"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"nova","fixed_in":["2:17.0.0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"nova","fixed_in":["2:17.0.0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"nova","fixed_in":["2:17.0.0-1"],"sources":["osv"]},{"ecosystem":"Red Hat:openstack:12::el7","package":"openstack-nova","fixed_in":["1:16.1.4-6.el7ost"],"sources":["osv"]},{"ecosystem":"Red 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Advisory","report","web"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2855","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18191","tags":["advisory"]},{"url":"https://github.com/openstack/nova/commit/0225a61fc4557c1257383a654f0741f7ef2ddeac","tags":["web"]},{"url":"https://github.com/openstack/nova/commit/5b64a1936122eeb35f37a09f9d38159e1a224c58","tags":["web"]},{"url":"https://github.com/openstack/nova/commit/cd3eb60c2c00bcccfa9ccd4bf9d1a96ae7a5cd88","tags":["web"]},{"url":"https://github.com/advisories/GHSA-ffmh-r67w-m88f","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-18191","tags":["advisory"]},{"url":"https://github.com/openstack/nova","tags":["package"]},{"url":"https://pypi.org/project/nova","tags":["package"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/12/html/release_notes/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1516271","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1537047","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1539703","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1546937","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1547578","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1556851","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1557938","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1558706","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1569955","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1570314","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1572836","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1573799","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1575985","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1579785","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1590514","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1591212","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1591296","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2018/rhsa-2018_2332.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2017-18191","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-18191","tags":["advisory","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1441962","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1546965","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1553559","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1553839","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1569953","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1575989","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2018/rhsa-2018_2714.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1545330","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1569952","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2018/rhsa-2018_2855.json","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2018/suse-su-20181448-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1070603","tags":["report"]},{"url":"https://bugzilla.suse.com/1073933","tags":["report"]},{"url":"https://bugzilla.suse.com/1081685","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2017-18191","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2017-18191","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5866-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2015-9543","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2020-17376","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-3654","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-37394","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-18191","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.","status":"published","published":"2018-02-19T17:00:00Z","modified":"2024-08-05T21:13:49.181Z","updated_at":"2026-11-02T14:33:21.747294Z"}],"euvd":[{"id":"EUVD-2022-3763","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.","status":"published","published":"2018-02-19T17:00:00Z","modified":"2024-08-05T21:13:49Z","updated_at":"2026-11-03T02:23:07.063551Z"}],"ghsa":[{"id":"GHSA-ffmh-r67w-m88f","title":"OpenStack Nova Denial of service attack on the compute host","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.","status":"published","published":"2022-05-13T01:44:36Z","modified":"2024-05-24T05:03:39Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:37:51.549437Z"}],"nvd":[{"id":"CVE-2017-18191","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.","status":"published","published":"2018-02-19T17:29:00.203Z","modified":"2026-06-17T01:12:21.737Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:04:15.877386Z"}],"osv":[{"id":"CVE-2017-18191","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) 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All Nova setups supporting encrypted volumes are affected.","status":"published","published":"2018-02-19T17:29:00.203Z","modified":"2026-09-01T20:03:46.913503311Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:29.100767Z"},{"id":"GHSA-ffmh-r67w-m88f","title":"OpenStack Nova Denial of service attack on the compute host","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.","status":"published","published":"2022-05-13T01:44:36Z","modified":"2026-07-06T08:11:37.985877181Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:46.39441Z"},{"id":"PYSEC-2026-689","title":"OpenStack Nova Denial of service attack on the compute host","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.","status":"published","published":"2026-07-02T14:13:24.655107Z","modified":"2026-07-06T08:00:47.574623169Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:58.117212Z"},{"id":"RHSA-2018:2332","title":"Red Hat Security Advisory: openstack-nova security, bug fix, and enhancement update","status":"published","published":"2024-09-13T13:42:15Z","modified":"2026-10-08T10:01:27Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:05.383061Z"},{"id":"RHSA-2018:2714","title":"Red Hat Security Advisory: openstack-nova security and bug fix update","status":"published","published":"2024-09-13T13:42:33Z","modified":"2026-10-08T10:01:28Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:05.383061Z"},{"id":"RHSA-2018:2855","title":"Red Hat Security Advisory: openstack-nova security and bug fix update","status":"published","published":"2024-09-13T13:41:56Z","modified":"2026-10-08T10:01:29Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:05.383061Z"},{"id":"UBUNTU-CVE-2017-18191","description":"An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.","status":"published","published":"2018-02-19T17:29:00Z","modified":"2026-02-04T03:09:23.342347Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:14.977781Z"},{"id":"SUSE-SU-2018:1448-1","title":"Security update for openstack-nova","description":"This update for openstack-nova fixes the following bugs and security issues:\n\nThe following security-issue has been fixed:\n\n- CVE-2017-18191: libvirt: Block swap volume attempts with encrypted volumes. (bsc#1081685)\n\nAdditionally, the following bugs have been fixed:\n\n- Set TasksMax to infinity for openstack-nova-compute. (bsc#1070603)\n- Fix qemu-img convert image incompatability in alpine linux. (bsc#1073933)\n- Update openstack-nova-placement-api handling.\n  + Remove the systemd .service file. the placement-api should run in a real WSGI container.\n  + Add a apache vhost sample configuration.\n","status":"published","published":"2018-05-28T09:23:49Z","modified":"2026-02-04T04:35:55.287538Z","updated_at":"2026-11-02T15:53:44.972817Z"},{"id":"USN-5866-1","title":"nova vulnerabilities","description":"It was discovered that Nova did not properly manage data logged into the\nlog file. An attacker with read access to the service's logs could exploit\nthis issue and may obtain sensitive information. This issue only affected\nUbuntu 16.04 ESM and Ubuntu 18.04 LTS. (CVE-2015-9543)\n\nIt was discovered that Nova did not properly handle attaching and\nreattaching the encrypted volume. An attacker could possibly use this issue\nto perform a denial of service attack. This issue only affected Ubuntu\n16.04 ESM. (CVE-2017-18191)\n\nIt was discovered that Nova did not properly handle the updation of domain\nXML after live migration. An attacker could possibly use this issue to\ncorrupt the volume or perform a denial of service attack. This issue only\naffected Ubuntu 18.04 LTS. (CVE-2020-17376)\n\nIt was discovered that Nova was not properly validating the URL passed to\nnoVNC. An attacker could possibly use this issue by providing malicious URL\nto the noVNC proxy to redirect to any desired URL. This issue only affected\nUbuntu 16.04 ESM and Ubuntu 18.04 LTS. (CVE-2021-3654)\n\nIt was discovered that Nova did not properly handle changes in the neutron\nport of vnic_type type. An authenticated user could possibly use this issue\nto perform a denial of service attack. This issue only affected Ubuntu\n20.04 LTS. (CVE-2022-37394)\n","status":"published","published":"2023-02-13T10:41:19Z","modified":"2026-06-25T13:31:45.416547217Z","updated_at":"2026-11-02T16:58:16.738762Z"}]}}