CVE-2017-18191
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.72% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- openstack/nova · redhat/openstack
- Source
- cve@mitre.org
EPSS 3.7% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://openwall.com/lists/oss-security/2018/04/20/3Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/103104Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2332Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2714Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2855Third Party Advisory
- https://launchpad.net/bugs/1739593Exploit, Issue Tracking, Third Party Advisory
- https://review.openstack.org/539893Exploit, Patch, Third Party Advisory
- https://security.openstack.org/ossa/OSSA-2018-001.htmlPatch, Vendor Advisory
- http://openwall.com/lists/oss-security/2018/04/20/3Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/103104Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2332Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2714Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2855Third Party Advisory
- https://launchpad.net/bugs/1739593Exploit, Issue Tracking, Third Party Advisory
- https://review.openstack.org/539893Exploit, Patch, Third Party Advisory
- https://security.openstack.org/ossa/OSSA-2018-001.htmlPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.