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Vulnerability record · CVE-2017-2637 · published 26 July 2018

CVE-2017-2637: Redhat openstack missing authentication for critical function vulnerability

Redhat · Openstack

A design flaw issue was found in the Red Hat OpenStack Platform director use of TripleO to enable libvirtd based live-migration. Libvirtd is deployed by default (by director) listening on 0.0.0.0 (all interfaces) with no-authentication or encryption. Anyone able to make a TCP connection to any compute host IP address, including 127.0.0.1, other loopback interface addresses, or in some cases possibly addresses that have been exposed beyond the management interface, could use this to open a virsh session to the libvirtd instance and gain control of virtual machine instances or possibly take over the host.

10.0 CVSS 3.0 Critical EPSS 4.8% · top 8.4% CWE-306 · Missing authentication for critical function
10.0CVSS 3.0 base score, v2 10.0
4.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

A design flaw issue was found in the Red Hat OpenStack Platform director use of TripleO to enable libvirtd based live-migration. Libvirtd is deployed by default (by director) listening on 0.0.0.0 (all interfaces) with no-authentication or encryption. Anyone able to make a TCP connection to any compute host IP address, including 127.0.0.1, other loopback interface addresses, or in some cases possibly addresses that have been exposed beyond the management interface, could use this to open a virsh session to the libvirtd instance and gain control of virtual machine instances or possibly take over the host.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/98576 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1242 Vendor Advisory
https://access.redhat.com/errata/RHSA-2017:1504 Vendor Advisory
https://access.redhat.com/errata/RHSA-2017:1537 Vendor Advisory
https://access.redhat.com/errata/RHSA-2017:1546 Vendor Advisory
https://access.redhat.com/solutions/3022771 MitigationVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2637 Issue TrackingMitigationVendor Advisory
https://wiki.openstack.org/wiki/OSSN/OSSN-0007 Vendor Advisory
http://www.securityfocus.com/bid/98576 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1242 Vendor Advisory
https://access.redhat.com/errata/RHSA-2017:1504 Vendor Advisory
https://access.redhat.com/errata/RHSA-2017:1537 Vendor Advisory
https://access.redhat.com/errata/RHSA-2017:1546 Vendor Advisory
https://access.redhat.com/solutions/3022771 MitigationVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2637 Issue TrackingMitigationVendor Advisory
https://wiki.openstack.org/wiki/OSSN/OSSN-0007 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2017-2637), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.