CVE-2017-18191

moderate-risk
Published 2018-02-19

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.

Do I need to act?

~
2.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (4)

Nova

Affected Vendors

Redhat Openstack

References (16)

Mailing List http://openwall.com/lists/oss-security/2018/04/20/3
Third Party Advisory http://www.securityfocus.com/bid/103104
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2332
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2714
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2855
Exploit https://launchpad.net/bugs/1739593
Exploit https://review.openstack.org/539893
Patch https://security.openstack.org/ossa/OSSA-2018-001.html
Mailing List http://openwall.com/lists/oss-security/2018/04/20/3
Third Party Advisory http://www.securityfocus.com/bid/103104
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2332
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2714
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:2855
Exploit https://launchpad.net/bugs/1739593
Exploit https://review.openstack.org/539893
Patch https://security.openstack.org/ossa/OSSA-2018-001.html
42
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 6/34 · Minimal
Exposure 10/34 · Low