CRITICAL CVSS 9.8
Published: 2020-11-30

CVE-2020-29127

fujitsu eternus_storage_dx200_s4_firmware Security Advisory (CVE-2020-29127)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2020-29127 impacting fujitsu eternus_storage_dx200_s4_firmware. Evaluated with CVSS Base Score of 9.8 (CRITICAL).

Original NVD Description

Source: NIST NVD
An issue was discovered on Fujitsu Eternus Storage DX200 S4 devices through 2020-11-25. After logging into the portal as a root user (using any web browser), the portal can be accessed with root privileges when the URI cgi-bin/csp?cspid={XXXXXXXXXX}&csppage=cgi_PgOverview&csplang=en is visited from a different web browser.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product fujitsu / eternus_storage_dx200_s4_firmware
Affected Versions *
Weakness Enumeration CWE-287

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2020-29127 impacting fujitsu eternus_storage_dx200_s4_firmware.

⚡ Nuclei Detection Template (YAML) cve-2020-29127.yaml
id: cve-2020-29127

info:
  name: fujitsu eternus_storage_dx200_s4_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2020-29127 affecting fujitsu eternus_storage_dx200_s4_firmware.
    Evaluation: An issue was discovered on Fujitsu Eternus Storage DX200 S4 devices through 2020-11-25. After logging into the portal as a root user (using any web br...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2020-29127
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2020-29127
    cwe-id: CWE-287
  tags: cve,cve-2020-29127,fujitsu,eternus_storage_dx200_s4_,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "eternus_storage_dx200_s4_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2020-29127.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2020-29127
# Target: fujitsu eternus_storage_dx200_s4_firmware | CVSS: 9.8 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2020-29127 (fujitsu eternus_storage_dx200_s4_firmware)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against fujitsu eternus_storage_dx200_s4_firmware scope (*).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2020-29127.sh
# Recommended Remediation & Patching Commands for CVE-2020-29127
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install eternus_storage_dx200_s4_ 2>/dev/null || \
sudo dnf upgrade eternus_storage_dx200_s4_ 2>/dev/null || \
sudo yum update eternus_storage_dx200_s4_

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i eternus_storage_dx200_s4_ 2>/dev/null || rpm -qa | grep -i eternus_storage_dx200_s4_

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2020-29127 in fujitsu eternus_storage_dx200_s4_firmware?

Review vendor-specific security notices and update fujitsu eternus_storage_dx200_s4_firmware packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2020-29127?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2020-29127?

CVE-2020-29127 is classified with a CVSS 3.1 Base Score of 9.8 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.8
CRITICAL SEVERITY
CVE ID CVE-2020-29127
Weakness CWE-287
Vendor fujitsu
Product eternus_storage_dx200_s4_firmware
Published 2020-11-30
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H