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NTAP-20211104-0006 — CVE-2021-3580 Nettle Vulnerability in NetApp Products

Published 2021-11-04 · Updated 2024-05-09 · Status: Final · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes

Official advisory: NTAP-20211104-0006 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Cloud Backup / AltaVault / SteelStore · ONTAP | ONTAP-relevant | highest CVSS: 7.5

CVEs in this advisory

CVE-2021-3580 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2021-3580 — A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. An attacker could use this flaw to provide a manipulated ciphertext leading to application crash and denial of service.

Impact

Successful exploitation of this vulnerability could lead to Denial of Service (DoS).

Affected products

NetApp Cloud Backup (formerly AltaVault)
ONTAP Select Deploy administration utility

Official fixes

ONTAP Select Deploy administration utility — 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.