UNKNOWN CVSS 7.2
Published: 2009-10-01

CVE-2009-3522

avast avast_antivirus_home Security Advisory (CVE-2009-3522)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2009-3522 impacting avast avast_antivirus_home. Evaluated with CVSS Base Score of 7.2 (UNKNOWN).

Original NVD Description

Source: NIST NVD
Stack-based buffer overflow in aswMon2.sys in avast! Home and Professional for Windows 4.8.1351, and possibly other versions before 4.8.1356, allows local users to cause a denial of service (system crash) and possibly gain privileges via a crafted IOCTL request to IOCTL 0xb2c80018.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
Low (AC:L)
No specialized conditions required

🎯 Affected Versions Matrix

Affected Product avast / avast_antivirus_home
Affected Versions 4.8.1351
Weakness Enumeration CWE-119

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-2009-3522 impacting avast avast_antivirus_home.

⚡ Nuclei Detection Template (YAML) cve-2009-3522.yaml
id: cve-2009-3522

info:
  name: avast avast_antivirus_home - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2009-3522 affecting avast avast_antivirus_home.
    Evaluation: Stack-based buffer overflow in aswMon2.sys in avast! Home and Professional for Windows 4.8.1351, and possibly other versions before 4.8.1356, allows l...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2009-3522
  classification:
    cvss-metrics: CVSS:3.1/AV:L/AC:L/Au:N/C:C/I:C/A:C
    cvss-score: 7.2
    cve-id: CVE-2009-3522
    cwe-id: CWE-119
  tags: cve,cve-2009-3522,avast,avast_antivirus_home,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "avast_antivirus_home"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2009-3522.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2009-3522
# Target: avast avast_antivirus_home | CVSS: 7.2 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2009-3522 (avast avast_antivirus_home)...")
    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 avast avast_antivirus_home scope (4.8.1351).")
        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-2009-3522.sh
# Recommended Remediation & Patching Commands for CVE-2009-3522
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install avast_antivirus_home 2>/dev/null || \
sudo dnf upgrade avast_antivirus_home 2>/dev/null || \
sudo yum update avast_antivirus_home

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

# 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-2009-3522 in avast avast_antivirus_home?

Review vendor-specific security notices and update avast avast_antivirus_home 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-2009-3522?

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-2009-3522?

CVE-2009-3522 is classified with a CVSS 3.1 Base Score of 7.2 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.2
UNKNOWN SEVERITY
CVE ID CVE-2009-3522
Weakness CWE-119
Vendor avast
Product avast_antivirus_home
Published 2009-10-01
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C