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NTAP-20220407-0009 — CVE-2021-3737 Python Vulnerability in NetApp Products

Published 2022-04-07 · Updated 2024-03-07 · Status: Final · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes

Official advisory: NTAP-20220407-0009 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.

Product family: SolidFire / NetApp HCI · Other NetApp products · ONTAP | ONTAP-relevant | highest CVSS: 7.5

CVEs in this advisory

CVE-2021-3737 — HIGH · CVSS 7.5 · site index

What the CVE records say

CVE-2021-3737 — A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.

Impact

Successful exploitation of this vulnerability could lead to Denial of Service (DoS). <br><br> ONTAP 9 (formerly Clustered Data ONTAP):<br> Version 9.7 is not affected.

Affected products

Management Services for Element Software and NetApp HCI
NetApp XCP NFS
NetApp XCP SMB
ONTAP 9
ONTAP Select Deploy administration utility

Official fixes

Management Services for Element Software and NetApp HCI — vendor fix ↗
NetApp XCP NFS — vendor fix ↗
NetApp XCP SMB — vendor fix ↗
ONTAP Select Deploy administration utility — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗
ONTAP 9 — vendor fix ↗

References

https://bugs.python.org/issue44022 ↗

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.