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NTAP-20210128-0002 — CVE-2021-3156 Sudo Vulnerability in NetApp Products
Published 2021-01-28 · Updated 2024-03-07 · Status: Final · Exploitation: Public · Severity: HIGH 7.8 · ONTAP affected: Yes
Official advisory: NTAP-20210128-0002 on security.netapp.com ↗. Affected versions, fixed releases, and workarounds live there — this page is a summary.
Product family: Active IQ Unified Manager · Cloud Backup / AltaVault / SteelStore · SolidFire / NetApp HCI · ONTAP | ONTAP-relevant | highest CVSS: 7.8
CVEs in this advisory
- CVE-2021-3156 — HIGH · CVSS 7.8 · site index
What the CVE records say
CVE-2021-3156 — Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.
Impact
Successful exploitation of this vulnerability could lead to disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS).
Affected products
- Active IQ Unified Manager for VMware vSphere
- NetApp Cloud Backup (formerly AltaVault)
- NetApp SolidFire & HCI Management Node
- ONTAP Select Deploy administration utility
- ONTAP tools for VMware vSphere 9
Official fixes
- Active IQ Unified Manager for VMware vSphere — vendor fix ↗
- NetApp SolidFire & HCI Management Node — vendor fix ↗
- NetApp SolidFire & HCI Management Node — vendor fix ↗
- ONTAP Select Deploy administration utility — vendor fix ↗
- ONTAP tools for VMware vSphere 9 — vendor fix ↗
References
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.
Related reading
- Common ONTAP problems (FAQ) — plain-language symptoms and fixes
- ONTAP security hardening — baseline lockdown guidance
- Ransomware protection on ONTAP — SnapLock, SnapMirror vaulting, Anomaly Detection
- ONTAP error messages index — EMS/WAFL/NFS/SnapMirror messages
- Every NetApp advisory published in 2021