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NTAP-20191009-0003 — CVE-2019-5506 Hostname Verification Vulnerability in Clustered Data ONTAP 9.0 and higher

Published 2019-10-09 · Updated 2019-10-10 · Status: Final · Exploitation: Not public · Severity: MEDIUM 5.9 · ONTAP affected: Yes

Official advisory: NTAP-20191009-0003 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: ONTAP | ONTAP-relevant | highest CVSS: 5.9

CVEs in this advisory

CVE-2019-5506 — MEDIUM · CVSS 5.9 · site index

What the CVE records say

CVE-2019-5506 — Clustered Data ONTAP versions 9.0 and higher do not enforce hostname verification under certain circumstances making them susceptible to impersonation via man-in-the-middle attacks.

Impact

Exploitation of this vulnerability could lead to man-in-the-middle (MITM) attacks utilizing data configured using the "system node virtual-machine hypervisor" command. <br><br> This command is not supported on hardware-based platforms - it is supported only on virtual platforms such as ONTAP Select.

Affected products

Clustered Data ONTAP

Official fixes

Clustered Data ONTAP — vendor fix ↗
Clustered Data ONTAP — vendor fix ↗
Clustered Data ONTAP — vendor fix ↗
Clustered Data ONTAP — vendor fix ↗
Clustered Data ONTAP — vendor fix ↗

What to do

Check the affected products listed above against the official advisory's affected-versions table — that is where the exact ONTAP 9 release, ONTAP tool, or management product versions are named.
If affected and a fixed release exists, plan the upgrade — see the ONTAP upgrade runbook.
If exploitation is listed as "active", treat remediation as urgent and review exposure (management LIFs, ONTAP S3, SnapMirror endpoints).
Harden in parallel: security hardening baseline and ransomware protection on ONTAP.