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NTAP-20181003-0002 — CVE-2018-5391 Linux Kernel Denial of Service Vulnerability in NetApp Products
Published 2018-10-03 · Updated 2022-01-14 · Status: Final · Exploitation: Public · Severity: HIGH 7.5 · ONTAP affected: Yes
Product family: Baseboard management controllers · Active IQ Unified Manager · ONTAP · E-Series / SANtricity · Cloud Backup / AltaVault / SteelStore · SolidFire / NetApp HCI · Other NetApp products · StorageGRID | ONTAP-relevant | highest CVSS: 7.5
CVEs in this advisory
- CVE-2018-5391 — HIGH · CVSS 7.5 · site index
What the CVE records say
CVE-2018-5391 — The Linux kernel, versions 3.9+, is vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may cause a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size.
Impact
Successful exploitation of this vulnerability may allow a remote attacker cause Denial of Service (DoS).
Affected products
- AFF Baseboard Management Controller (BMC) - A700s
- Active IQ Unified Manager for VMware vSphere
- Data ONTAP Edge
- E-Series SANtricity OS Controller Software 11.x
- FAS/AFF Baseboard Management Controller (BMC) - A320/C190/A220/FAS2720/FAS2750/A800
- NetApp Cloud Backup (formerly AltaVault)
- NetApp HCI Compute Node (Bootstrap OS)
- NetApp SolidFire, Enterprise SDS & HCI Storage Node (Element Software)
- NetApp VASA Provider for Clustered Data ONTAP 9.7 and above
- SnapProtect
- Storage Replication Adapter for Clustered Data ONTAP for VMware vSphere 9.7 and above
- StorageGRID (formerly StorageGRID Webscale)
Official fixes
- E-Series SANtricity OS Controller Software 11.x — vendor fix ↗
- Storage Replication Adapter for Clustered Data ONTAP for VMware vSphere 9.7 and above — vendor fix ↗
- NetApp HCI Compute Node (Bootstrap OS) — vendor fix ↗
- Virtual Storage Console for VMware vSphere 9.7 and above — vendor fix ↗
- NetApp VASA Provider for Clustered Data ONTAP 9.7 and above — vendor fix ↗
- StorageGRID (formerly StorageGRID Webscale) — vendor fix ↗
- Active IQ Unified Manager for VMware vSphere — vendor fix ↗
- AFF Baseboard Management Controller (BMC) - A700s — vendor fix ↗
- FAS/AFF Baseboard Management Controller (BMC) - A320/C190/A220/FAS2720/FAS2750/A800 — vendor fix ↗
- NetApp SolidFire, Enterprise SDS & HCI Storage Node (Element Software) — vendor fix ↗
- NetApp SolidFire, Enterprise SDS & HCI Storage Node (Element Software) — 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 2018