UNKNOWN CVSS 4.3
Published: 2006-12-20

CVE-2006-6660

kde libkhtml Security Advisory (CVE-2006-6660)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2006-6660 impacting kde libkhtml. Evaluated with CVSS Base Score of 4.3 (UNKNOWN).

Original NVD Description

Source: NIST NVD
The nodeType function in KDE libkhtml 4.2.0 and earlier, as used by Konquerer, KMail, and other programs, allows remote attackers to cause a denial of service (crash) via malformed HTML tags, possibly involving a COL SPAN tag embedded in a RANGE tag.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact

🎯 Affected Versions Matrix

Affected Product kde / libkhtml
Affected Versions *
Weakness Enumeration NVD-CWE-Other

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-2006-6660 impacting kde libkhtml.

⚡ Nuclei Detection Template (YAML) cve-2006-6660.yaml
id: cve-2006-6660

info:
  name: kde libkhtml - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2006-6660 affecting kde libkhtml.
    Evaluation: The nodeType function in KDE libkhtml 4.2.0 and earlier, as used by Konquerer, KMail, and other programs, allows remote attackers to cause a denial of...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2006-6660
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:M/Au:N/C:N/I:N/A:P
    cvss-score: 4.3
    cve-id: CVE-2006-6660
    cwe-id: NVD-CWE-Other
  tags: cve,cve-2006-6660,kde,libkhtml,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "libkhtml"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2006-6660.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2006-6660
# Target: kde libkhtml | CVSS: 4.3 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2006-6660 (kde libkhtml)...")
    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 kde libkhtml 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-2006-6660.sh
# Recommended Remediation & Patching Commands for CVE-2006-6660
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install libkhtml 2>/dev/null || \
sudo dnf upgrade libkhtml 2>/dev/null || \
sudo yum update libkhtml

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

# 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-2006-6660 in kde libkhtml?

Review vendor-specific security notices and update kde libkhtml 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-2006-6660?

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-2006-6660?

CVE-2006-6660 is classified with a CVSS 3.1 Base Score of 4.3 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.3
UNKNOWN SEVERITY
CVE ID CVE-2006-6660
Weakness NVD-CWE-Other
Vendor kde
Product libkhtml
Published 2006-12-20
Vector AV:N/AC:M/Au:N/C:N/I:N/A:P