THREATPORT/VULNERABILITY/CVE-2017-2637
CRITICAL SEVERITY

CVE-2017-2637

Openstack vulnerability

CVSS
9.9
EPSS
4.8%
EPSS pct
91th
Exploited
No known
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.
Affected vendor
Redhat
Affected product
Openstack
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Weakness type (CWE)
  • CWE-306 — Missing Authentication for Critical Function
Published
2018-07-26

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, low impact to availability.

Its EPSS score of 4.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2017-2637

  • Confirm whether Redhat Openstack is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-2637.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-2637

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