UNKNOWN CVSS 2.6
Published: 1999-08-11

CVE-1999-0861

microsoft commercial_internet_system Security Advisory (CVE-1999-0861)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-1999-0861 impacting microsoft commercial_internet_system. Evaluated with CVSS Base Score of 2.6 (UNKNOWN).

Original NVD Description

Source: NIST NVD
Race condition in the SSL ISAPI filter in IIS and other servers may leak information in plaintext.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
High (AC:H)
Depends on race conditions or environment
Integrity
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product microsoft / commercial_internet_system
Affected Versions 2.0
Weakness Enumeration CWE-362

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-1999-0861 impacting microsoft commercial_internet_system.

⚡ Nuclei Detection Template (YAML) cve-1999-0861.yaml
id: cve-1999-0861

info:
  name: microsoft commercial_internet_system - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-1999-0861 affecting microsoft commercial_internet_system.
    Evaluation: Race condition in the SSL ISAPI filter in IIS and other servers may leak information in plaintext....
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-1999-0861
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:H/Au:N/C:P/I:N/A:N
    cvss-score: 2.6
    cve-id: CVE-1999-0861
    cwe-id: CWE-362
  tags: cve,cve-1999-0861,microsoft,commercial_internet_syste,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "commercial_internet_system"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-1999-0861.py
# Proof-of-Concept Exploit & Verification Probe for CVE-1999-0861
# Target: microsoft commercial_internet_system | CVSS: 2.6 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-1999-0861 (microsoft commercial_internet_system)...")
    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 microsoft commercial_internet_system scope (2.0).")
        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-1999-0861.sh
# Recommended Remediation & Patching Commands for CVE-1999-0861
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install commercial_internet_syste 2>/dev/null || \
sudo dnf upgrade commercial_internet_syste 2>/dev/null || \
sudo yum update commercial_internet_syste

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

# 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-1999-0861 in microsoft commercial_internet_system?

Review vendor-specific security notices and update microsoft commercial_internet_system 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-1999-0861?

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-1999-0861?

CVE-1999-0861 is classified with a CVSS 3.1 Base Score of 2.6 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
2.6
UNKNOWN SEVERITY
CVE ID CVE-1999-0861
Weakness CWE-362
Vendor microsoft
Product commercial_internet_system
Published 1999-08-11
Vector AV:N/AC:H/Au:N/C:P/I:N/A:N