CRITICAL CVSS 9.8
Published: 2017-06-30

CVE-2017-7905

ge multilin_sr_750_feeder_protection_relay_firmware Security Advisory (CVE-2017-7905)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2017-7905 impacting ge multilin_sr_750_feeder_protection_relay_firmware. Evaluated with CVSS Base Score of 9.8 (CRITICAL).

Original NVD Description

Source: NIST NVD
A Weak Cryptography for Passwords issue was discovered in General Electric (GE) Multilin SR 750 Feeder Protection Relay, firmware versions prior to Version 7.47; SR 760 Feeder Protection Relay, firmware versions prior to Version 7.47; SR 469 Motor Protection Relay, firmware versions prior to Version 5.23; SR 489 Generator Protection Relay, firmware versions prior to Version 4.06; SR 745 Transformer Protection Relay, firmware versions prior to Version 5.23; SR 369 Motor Protection Relay, all firmware versions; Multilin Universal Relay, firmware Version 6.0 and prior versions; and Multilin URplus (D90, C90, B95), all versions. Ciphertext versions of user passwords were created with a non-random initialization vector leaving them susceptible to dictionary attacks. Ciphertext of user passwords can be obtained from the front LCD panel of affected products and through issued Modbus commands.

📊 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 ge / multilin_sr_750_feeder_protection_relay_firmware
Affected Versions *
Weakness Enumeration CWE-261

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-2017-7905 impacting ge multilin_sr_750_feeder_protection_relay_firmware.

⚡ Nuclei Detection Template (YAML) cve-2017-7905.yaml
id: cve-2017-7905

info:
  name: ge multilin_sr_750_feeder_protection_relay_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2017-7905 affecting ge multilin_sr_750_feeder_protection_relay_firmware.
    Evaluation: A Weak Cryptography for Passwords issue was discovered in General Electric (GE) Multilin SR 750 Feeder Protection Relay, firmware versions prior to Ve...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2017-7905
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2017-7905
    cwe-id: CWE-261
  tags: cve,cve-2017-7905,ge,multilin_sr_750_feeder_pr,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "multilin_sr_750_feeder_protection_relay_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2017-7905.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2017-7905
# Target: ge multilin_sr_750_feeder_protection_relay_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-2017-7905 (ge multilin_sr_750_feeder_protection_relay_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 ge multilin_sr_750_feeder_protection_relay_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-2017-7905.sh
# Recommended Remediation & Patching Commands for CVE-2017-7905
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install multilin_sr_750_feeder_pr 2>/dev/null || \
sudo dnf upgrade multilin_sr_750_feeder_pr 2>/dev/null || \
sudo yum update multilin_sr_750_feeder_pr

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i multilin_sr_750_feeder_pr 2>/dev/null || rpm -qa | grep -i multilin_sr_750_feeder_pr

# 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.

🔗 Verified Technical References

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2017-7905 in ge multilin_sr_750_feeder_protection_relay_firmware?

Review vendor-specific security notices and update ge multilin_sr_750_feeder_protection_relay_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-2017-7905?

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-2017-7905?

CVE-2017-7905 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-2017-7905
Weakness CWE-261
Vendor ge
Product multilin_sr_750_feeder_protection_relay_firmware
Published 2017-06-30
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H