CVE-2017-2637

CRITICALNVD 9.910.0▲
EchelonGraph scoreMEDIUM confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.9; sources differ by 0.1.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5%CVSS: 9.9Exploit: None knownExposed: 0

A fix is available — apply it.

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 v3
9.9
EG Score
10.0(medium)
EG Risk
51(Track)
EG Risk 51/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation5% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
5%
EPSS %ILE
91%
KEV
Not listed

Published

July 26, 2018

Last Modified

November 21, 2024

Advisory Details (8)

Auto-updated Jul 24, 2026
Patch available. Sources: redhat.
redhat Patch Available
https://access.redhat.com/errata/RHSA-2017:1242
generic
http://www.securityfocus.com/bid/98576
generic

OSSN/OSSN-0007 - OpenStack

https://wiki.openstack.org/wiki/OSSN/OSSN-0007
redhat Patch Available

1428240 – (CVE-2017-2637) CVE-2017-2637 rhosp-director:libvirtd is deployed with no authentication

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2637
redhat Patch Available

Red Hat OpenStack Platform director (TripleO) CVE-2017-2637 bug and Red Hat OpenStack Platform - Red Hat Customer Portal

https://access.redhat.com/solutions/3022771
redhat Patch Available
https://access.redhat.com/errata/RHSA-2017:1546
redhat Patch Available
https://access.redhat.com/errata/RHSA-2017:1537
redhat Patch Available
https://access.redhat.com/errata/RHSA-2017:1504

Vendor Advisories for CVE-2017-2637(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpython-rdomanager-oscplugin-0:0.0.10-34.el7ost2017-06-20redhat
redhatpython-tripleoclient-0:0.3.4-14.el7ost2017-06-20redhat
redhatpython-tripleoclient-0:2.0.0-14.el7ost2017-06-19redhat
redhatpuppet-tripleo-0:5.5.0-12.el7ost2017-05-17redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 01:29 UTCEG score recompute
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  57. 2026-05-28 04:40 UTCEG score recompute
  58. 2026-05-28 04:40 UTCVendor advisory
  59. 2026-05-28 04:40 UTCGHSA enrichment
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2017-2637?
CVE-2017-2637 is a critical vulnerability published on July 26, 2018. 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…
When was CVE-2017-2637 disclosed?
CVE-2017-2637 was first published in the National Vulnerability Database on July 26, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-2637 actively exploited?
CVE-2017-2637 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5% probability of exploitation in the next 30 days, which ranks it in the top 9.0% of all scored CVEs.
What is the CVSS score of CVE-2017-2637?
CVE-2017-2637 has a CVSS v3 base score of 9.9 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 10.0.
How do I remediate CVE-2017-2637?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-2637, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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