UNKNOWN CVSS 7.5
Published: 1999-11-25

CVE-1999-1547

oracle web_listener Security Advisory (CVE-1999-1547)
↗ Official NIST NVD Record
Seeking technical exploit breakdowns or verified PoC code for CVE-1999-1547?
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-1999-1547 impacting oracle web_listener. Evaluated with CVSS Base Score of 7.5 (UNKNOWN).

Original NVD Description

Source: NIST NVD
Oracle Web Listener 2.1 allows remote attackers to bypass access restrictions by replacing a character in the URL with its HTTP-encoded (hex) equivalent.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required

🎯 Affected Versions Matrix

Affected Product oracle / web_listener
Affected Versions 2.1
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-1999-1547 impacting oracle web_listener.

⚡ Nuclei Detection Template (YAML) cve-1999-1547.yaml
id: cve-1999-1547

info:
  name: oracle web_listener - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-1999-1547 affecting oracle web_listener.
    Evaluation: Oracle Web Listener 2.1 allows remote attackers to bypass access restrictions by replacing a character in the URL with its HTTP-encoded (hex) equivale...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-1999-1547
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/Au:N/C:P/I:P/A:P
    cvss-score: 7.5
    cve-id: CVE-1999-1547
    cwe-id: CWE-20
  tags: cve,cve-1999-1547,oracle,web_listener,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "web_listener"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-1999-1547.py
# Proof-of-Concept Exploit & Verification Probe for CVE-1999-1547
# Target: oracle web_listener | CVSS: 7.5 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-1999-1547 (oracle web_listener)...")
    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 oracle web_listener scope (2.1).")
        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-1999-1547.sh
# Recommended Remediation & Patching Commands for CVE-1999-1547
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install web_listener 2>/dev/null || \
sudo dnf upgrade web_listener 2>/dev/null || \
sudo yum update web_listener

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

# 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-1999-1547 in oracle web_listener?

Review vendor-specific security notices and update oracle web_listener 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-1999-1547?

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-1999-1547?

CVE-1999-1547 is classified with a CVSS 3.1 Base Score of 7.5 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.5
UNKNOWN SEVERITY
CVE ID CVE-1999-1547
Weakness CWE-20
Vendor oracle
Product web_listener
Published 1999-11-25
Vector AV:N/AC:L/Au:N/C:P/I:P/A:P