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CVE-2021-1497

Cisco — Cisco HyperFlex HX Installer Virtual Machine Command Injection Vulnerability

Cisco · CWE-78 — Operating system command injection · in CISA KEV since 2021-11-03

ExigentKEV since 2021 · listed over a yearCISA KEVActively Exploited
87

EVRS 87 of 100 Immediate

Out-of-Band / Urgent Remediation

Rank 222 of 2,954 tracked

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Why it scores 87

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.999.

  • CISA KEVApplied
  • RansomwareDid not apply
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

hyperflex hx data platform: update to 4.0\(2e\) or later | hyperflex hx data platform: update to 4.5\(2a\) or later

Affected versions

  • hyperflex hx data platform< 4.0\(2e\)>= 4.5 < 4.5\(2a\)
  • hyperflex hx220c af m5
  • hyperflex hx220c all nvme m5
  • hyperflex hx220c edge m5
  • hyperflex hx220c m5
  • hyperflex hx240c
  • hyperflex hx240c af m5
  • hyperflex hx240c m5

Remediation

Apply updates per vendor instructions.

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 9.8 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.999 (99.97th pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Unknown or none CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2021-11-17 · KEV since 2021 · listed over a year CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. Public module exists Metasploit
EUVD cross-referenceENISA's record: CVSS 9.8 (v3.1), assigned by cisco. Listed ENISA EUVD

Description

NVD

Multiple vulnerabilities in the web-based management interface of Cisco HyperFlex HX could allow an unauthenticated, remote attacker to perform command injection attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

What CISA says to do

Public module

Metasploit lists a public excellent-rank module for this CVE: Cisco HyperFlex HX Data Platform Command Execution (linux/http/cisco_hyperflex_hx_data_platform_cmd_exec). A module existing is not the same as active exploitation; see metasploit.com.