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NTAP-20220407-0001 — CVE-2021-3733 Python Vulnerability in NetApp Products

Published 2022-04-07 · Updated 2024-04-25 · Status: Interim · Exploitation: Public · Severity: MEDIUM 6.5 · ONTAP affected: Yes

Official advisory: NTAP-20220407-0001 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: Active IQ Unified Manager · SolidFire / NetApp HCI · ONTAP | ONTAP-relevant | highest CVSS: 6.5

CVEs in this advisory

CVE-2021-3733 — MEDIUM · CVSS 6.5 · site index

What the CVE records say

CVE-2021-3733 — There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.

Impact

Successful exploitation of this vulnerability could lead to Denial of Service (DoS). <br><br> ONTAP 9 (formerly Clustered Data ONTAP):<br> Affected versions are 9.8 and 9.9.1.

Affected products

Active IQ Unified Manager for Microsoft Windows
Active IQ Unified Manager for VMware vSphere
Management Services for Element Software and NetApp HCI
NetApp HCI Compute Node (Bootstrap OS)
NetApp SolidFire & HCI Storage Node (Element Software)
ONTAP 9 (formerly Clustered Data ONTAP)
ONTAP Select Deploy administration utility

Official fixes

Active IQ Unified Manager for Microsoft Windows — vendor fix ↗
Management Services for Element Software and NetApp HCI — vendor fix ↗
ONTAP Select Deploy administration utility — vendor fix ↗
ONTAP 9 (formerly Clustered Data ONTAP) — vendor fix ↗
ONTAP 9 (formerly Clustered Data ONTAP) — vendor fix ↗
ONTAP 9 (formerly Clustered Data ONTAP) — vendor fix ↗
ONTAP 9 (formerly 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.