UNKNOWN CVSS 3.6
Published: 2006-10-12

CVE-2006-4842

netscape portable_runtime_api Security Advisory (CVE-2006-4842)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2006-4842 impacting netscape portable_runtime_api. Evaluated with CVSS Base Score of 3.6 (UNKNOWN).

Original NVD Description

Source: NIST NVD
The Netscape Portable Runtime (NSPR) API 4.6.1 and 4.6.2, as used in Sun Solaris 10, trusts user-specified environment variables for specifying log files even when running from setuid programs, which allows local users to create or overwrite arbitrary files.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
Low (AC:L)
No specialized conditions required
Confidentiality
None (C:N)
No data confidentiality impact

🎯 Affected Versions Matrix

Affected Product netscape / portable_runtime_api
Affected Versions 4.6.1
Weakness Enumeration CWE-20

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-2006-4842 impacting netscape portable_runtime_api.

⚡ Nuclei Detection Template (YAML) cve-2006-4842.yaml
id: cve-2006-4842

info:
  name: netscape portable_runtime_api - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2006-4842 affecting netscape portable_runtime_api.
    Evaluation: The Netscape Portable Runtime (NSPR) API 4.6.1 and 4.6.2, as used in Sun Solaris 10, trusts user-specified environment variables for specifying log fi...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2006-4842
  classification:
    cvss-metrics: CVSS:3.1/AV:L/AC:L/Au:N/C:N/I:P/A:P
    cvss-score: 3.6
    cve-id: CVE-2006-4842
    cwe-id: CWE-20
  tags: cve,cve-2006-4842,netscape,portable_runtime_api,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "portable_runtime_api"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2006-4842.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2006-4842
# Target: netscape portable_runtime_api | CVSS: 3.6 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2006-4842 (netscape portable_runtime_api)...")
    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 netscape portable_runtime_api scope (4.6.1).")
        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-2006-4842.sh
# Recommended Remediation & Patching Commands for CVE-2006-4842
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install portable_runtime_api 2>/dev/null || \
sudo dnf upgrade portable_runtime_api 2>/dev/null || \
sudo yum update portable_runtime_api

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

# 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-2006-4842 in netscape portable_runtime_api?

Review vendor-specific security notices and update netscape portable_runtime_api 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-2006-4842?

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-2006-4842?

CVE-2006-4842 is classified with a CVSS 3.1 Base Score of 3.6 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
3.6
UNKNOWN SEVERITY
CVE ID CVE-2006-4842
Weakness CWE-20
Vendor netscape
Product portable_runtime_api
Published 2006-10-12
Vector AV:L/AC:L/Au:N/C:N/I:P/A:P