UNKNOWN CVSS 5.0
Published: 2006-03-07

CVE-2006-0883

openbsd openssh Security Advisory (CVE-2006-0883)
↗ Official NIST NVD Record
Seeking technical exploit breakdowns or verified PoC code for CVE-2006-0883?
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2006-0883 impacting openbsd openssh. Evaluated with CVSS Base Score of 5.0 (UNKNOWN).

Original NVD Description

Source: NIST NVD
OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a forked child process terminates during PAM authentication, which allows remote attackers to cause a denial of service (client connection refusal) by connecting multiple times to the SSH server, waiting for the password prompt, then disconnecting.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact

🎯 Affected Versions Matrix

Affected Product openbsd / openssh
Affected Versions 3.8.1p1
Weakness Enumeration CWE-399

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-2006-0883 impacting openbsd openssh.

⚡ Nuclei Detection Template (YAML) cve-2006-0883.yaml
id: cve-2006-0883

info:
  name: openbsd openssh - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2006-0883 affecting openbsd openssh.
    Evaluation: OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a forked child process terminates during PAM authentication, whi...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2006-0883
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/Au:N/C:N/I:N/A:P
    cvss-score: 5.0
    cve-id: CVE-2006-0883
    cwe-id: CWE-399
  tags: cve,cve-2006-0883,openbsd,openssh,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "openssh"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2006-0883.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2006-0883
# Target: openbsd openssh | CVSS: 5.0 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2006-0883 (openbsd openssh)...")
    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 openbsd openssh scope (3.8.1p1).")
        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-2006-0883.sh
# Recommended Remediation & Patching Commands for CVE-2006-0883
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install openssh 2>/dev/null || \
sudo dnf upgrade openssh 2>/dev/null || \
sudo yum update openssh

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

# 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-2006-0883 in openbsd openssh?

Review vendor-specific security notices and update openbsd openssh 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-2006-0883?

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-2006-0883?

CVE-2006-0883 is classified with a CVSS 3.1 Base Score of 5.0 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
5.0
UNKNOWN SEVERITY
CVE ID CVE-2006-0883
Weakness CWE-399
Vendor openbsd
Product openssh
Published 2006-03-07
Vector AV:N/AC:L/Au:N/C:N/I:N/A:P