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NTAP-20220204-0005 — CVE-2021-4160 OpenSSL Vulnerability in NetApp Products

Published 2022-02-04 · Updated 2025-12-23 · Status: Final · Exploitation: Public · Severity: MEDIUM 5.9 · ONTAP affected: Yes

Official advisory: NTAP-20220204-0005 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Cloud Backup / AltaVault / SteelStore · SolidFire / NetApp HCI · Other NetApp products · ONTAP · SnapManager / Snap utilities | ONTAP-relevant | highest CVSS: 5.9

CVEs in this advisory

CVE-2021-4160 — MEDIUM · CVSS 5.9 · site index

What the CVE records say

CVE-2021-4160 — There is a carry propagation bug in the MIPS32 and MIPS64 squaring procedure. Many EC algorithms are affected, including some of the TLS 1.3 default curves. Impact was not analyzed in detail, because the pre-requisites for attack are considered unlikely and include reusing private keys. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH private key among multiple clients, which is no longer an option since CVE-2016-0701. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0.0. It was addressed in the releases of 1.1.1m and 3.0.1 on the 15th of December 2021. For the 1.0.2 release it is addressed in git commit 6fc1aaaf3 that is available to premium support customers only. It will be made available in 1.0.2zc when it is released. The issue only affects OpenSSL on MIPS platforms. Fixed in OpenSSL 3.0.1 (Affected 3.0.0). Fixed in OpenSSL 1.1.1m (Affected 1.1.1-1.1.1l). Fixed in OpenSSL 1.0.2zc-dev (Affected 1.0.2-1.0.2zb).

Impact

Successful exploitation of this vulnerability could lead to disclosure of sensitive information.

Affected products

NetApp Cloud Backup OST Plug-in (formerly AltaVault OST Plug-in)
NetApp HCI Baseboard Management Controller (BMC) - H300S/H500S/H700S/H410S
NetApp HCI Baseboard Management Controller (BMC) - H410C
NetApp HCI Compute Node (Bootstrap OS)
NetApp SMI-S Provider
NetApp SolidFire & HCI Storage Node (Element Software)
ONTAP Antivirus Connector
ONTAP Select Deploy administration utility
SnapManager for Hyper-V

Official fixes

ONTAP Antivirus Connector — vendor fix ↗
NetApp SolidFire & HCI Storage Node (Element Software) — vendor fix ↗
ONTAP Select Deploy administration utility — vendor fix ↗

References

https://www.openssl.org/news/secadv/20220128.txt ↗

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.