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.
Find out more about CVE-2017-2637 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 9.9 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | Low |
| Platform | Errata | Release Date |
|---|---|---|
| OpenStack 8.0 Director for RHEL 7 | RHSA-2017:1546 | 2017-06-20 |
| OpenStack 9.0 Director for RHEL 7 | RHSA-2017:1504 | 2017-06-19 |
| OpenStack 7.0 Director for RHEL 7 | RHSA-2017:1537 | 2017-06-20 |
| Red Hat OpenStack Platform 10 | RHSA-2017:1242 | 2017-05-17 |
| Platform | Package | State |
|---|---|---|
| Red Hat OpenStack Platform 11.0 (Ocata) | rhosp-director | Not affected |
A KCS article with more details on this flaw is available at: https://access.redhat.com/solutions/3022771
Vulmon