MEDIUM CVSS 4.9
Published: 2017-08-28

CVE-2017-12077

synology router_manager Security Advisory (CVE-2017-12077)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2017-12077 impacting synology router_manager. Evaluated with CVSS Base Score of 4.9 (MEDIUM).

Original NVD Description

Source: NIST NVD
Uncontrolled Resource Consumption vulnerability in SYNO.Core.PortForwarding.Rules in Synology Router Manager (SRM) before 1.1.4-6509 allows remote authenticated attacker to exhaust the memory resources of the machine, causing a denial of service attack.

📊 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
High (PR:H)
Administrative credentials required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product synology / router_manager
Affected Versions *
Weakness Enumeration CWE-400

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-2017-12077 impacting synology router_manager.

⚡ Nuclei Detection Template (YAML) cve-2017-12077.yaml
id: cve-2017-12077

info:
  name: synology router_manager - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2017-12077 affecting synology router_manager.
    Evaluation: Uncontrolled Resource Consumption vulnerability in SYNO.Core.PortForwarding.Rules in Synology Router Manager (SRM) before 1.1.4-6509 allows remote aut...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2017-12077
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
    cvss-score: 4.9
    cve-id: CVE-2017-12077
    cwe-id: CWE-400
  tags: cve,cve-2017-12077,synology,router_manager,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "router_manager"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2017-12077.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2017-12077
# Target: synology router_manager | CVSS: 4.9 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2017-12077 (synology router_manager)...")
    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 synology router_manager 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-2017-12077.sh
# Recommended Remediation & Patching Commands for CVE-2017-12077
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install router_manager 2>/dev/null || \
sudo dnf upgrade router_manager 2>/dev/null || \
sudo yum update router_manager

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

# 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

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2017-12077 in synology router_manager?

Review vendor-specific security notices and update synology router_manager 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-2017-12077?

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-2017-12077?

CVE-2017-12077 is classified with a CVSS 3.1 Base Score of 4.9 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.9
MEDIUM SEVERITY
CVE ID CVE-2017-12077
Weakness CWE-400
Vendor synology
Product router_manager
Published 2017-08-28
Vector CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H