CRITICAL CVSS 9.8
Published: 2017-06-11

CVE-2017-9542

d-link dir-615_firmware Security Advisory (CVE-2017-9542)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2017-9542 impacting d-link dir-615_firmware. Evaluated with CVSS Base Score of 9.8 (CRITICAL).

Original NVD Description

Source: NIST NVD
D-Link DIR-615 Wireless N 300 Router allows authentication bypass via a modified POST request to login.cgi. This issue occurs because it fails to validate the password field. Successful exploitation of this issue allows an attacker to take control of the affected device.

📊 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 d-link / dir-615_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-2017-9542 impacting d-link dir-615_firmware.

⚡ Nuclei Detection Template (YAML) cve-2017-9542.yaml
id: cve-2017-9542

info:
  name: d-link dir-615_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2017-9542 affecting d-link dir-615_firmware.
    Evaluation: D-Link DIR-615 Wireless N 300 Router allows authentication bypass via a modified POST request to login.cgi. This issue occurs because it fails to vali...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2017-9542
  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-2017-9542
    cwe-id: CWE-287
  tags: cve,cve-2017-9542,d-link,dir-615_firmware,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "dir-615_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2017-9542.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2017-9542
# Target: d-link dir-615_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-2017-9542 (d-link dir-615_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 d-link dir-615_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-2017-9542.sh
# Recommended Remediation & Patching Commands for CVE-2017-9542
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install dir-615_firmware 2>/dev/null || \
sudo dnf upgrade dir-615_firmware 2>/dev/null || \
sudo yum update dir-615_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i dir-615_firmware 2>/dev/null || rpm -qa | grep -i dir-615_firmware

# 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-2017-9542 in d-link dir-615_firmware?

Review vendor-specific security notices and update d-link dir-615_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-2017-9542?

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-2017-9542?

CVE-2017-9542 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-2017-9542
Weakness CWE-287
Vendor d-link
Product dir-615_firmware
Published 2017-06-11
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H