UNKNOWN CVSS 4.6
Published: 2011-06-22

CVE-2011-2200

freedesktop dbus Security Advisory (CVE-2011-2200)
↗ Official NIST NVD Record
Seeking technical exploit breakdowns or verified PoC code for CVE-2011-2200?
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2011-2200 impacting freedesktop dbus. Evaluated with CVSS Base Score of 4.6 (UNKNOWN).

Original NVD Description

Source: NIST NVD
The _dbus_header_byteswap function in dbus-marshal-header.c in D-Bus (aka DBus) 1.2.x before 1.2.28, 1.4.x before 1.4.12, and 1.5.x before 1.5.4 does not properly handle a non-native byte order, which allows local users to cause a denial of service (connection loss), obtain potentially sensitive information, or conduct unspecified state-modification attacks via crafted messages.

📊 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 freedesktop / dbus
Affected Versions 1.5.0
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-2011-2200 impacting freedesktop dbus.

⚡ Nuclei Detection Template (YAML) cve-2011-2200.yaml
id: cve-2011-2200

info:
  name: freedesktop dbus - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2011-2200 affecting freedesktop dbus.
    Evaluation: The _dbus_header_byteswap function in dbus-marshal-header.c in D-Bus (aka DBus) 1.2.x before 1.2.28, 1.4.x before 1.4.12, and 1.5.x before 1.5.4 does ...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2011-2200
  classification:
    cvss-metrics: CVSS:3.1/AV:L/AC:L/Au:N/C:P/I:P/A:P
    cvss-score: 4.6
    cve-id: CVE-2011-2200
    cwe-id: CWE-20
  tags: cve,cve-2011-2200,freedesktop,dbus,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "dbus"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2011-2200.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2011-2200
# Target: freedesktop dbus | CVSS: 4.6 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2011-2200 (freedesktop dbus)...")
    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 freedesktop dbus scope (1.5.0).")
        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-2011-2200.sh
# Recommended Remediation & Patching Commands for CVE-2011-2200
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install dbus 2>/dev/null || \
sudo dnf upgrade dbus 2>/dev/null || \
sudo yum update dbus

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

# 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-2011-2200 in freedesktop dbus?

Review vendor-specific security notices and update freedesktop dbus 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-2011-2200?

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-2011-2200?

CVE-2011-2200 is classified with a CVSS 3.1 Base Score of 4.6 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.6
UNKNOWN SEVERITY
CVE ID CVE-2011-2200
Weakness CWE-20
Vendor freedesktop
Product dbus
Published 2011-06-22
Vector AV:L/AC:L/Au:N/C:P/I:P/A:P