UNKNOWN CVSS 6.5
Published: 2011-05-31

CVE-2011-0546

symantec backup_exec Security Advisory (CVE-2011-0546)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2011-0546 impacting symantec backup_exec. Evaluated with CVSS Base Score of 6.5 (UNKNOWN).

Original NVD Description

Source: NIST NVD
Symantec Backup Exec 11.0, 12.0, 12.5, 13.0, and 13.0 R2 does not validate identity information sent between the media server and the remote agent, which allows man-in-the-middle attackers to execute NDMP commands via unspecified vectors.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Adjacent (AV:A)
Requires shared subnet / local network access
Attack Complexity
High (AC:H)
Depends on race conditions or environment

🎯 Affected Versions Matrix

Affected Product symantec / backup_exec
Affected Versions 11.0
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-2011-0546 impacting symantec backup_exec.

⚡ Nuclei Detection Template (YAML) cve-2011-0546.yaml
id: cve-2011-0546

info:
  name: symantec backup_exec - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2011-0546 affecting symantec backup_exec.
    Evaluation: Symantec Backup Exec 11.0, 12.0, 12.5, 13.0, and 13.0 R2 does not validate identity information sent between the media server and the remote agent, wh...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2011-0546
  classification:
    cvss-metrics: CVSS:3.1/AV:A/AC:H/Au:S/C:C/I:C/A:C
    cvss-score: 6.5
    cve-id: CVE-2011-0546
    cwe-id: CWE-20
  tags: cve,cve-2011-0546,symantec,backup_exec,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "backup_exec"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2011-0546.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2011-0546
# Target: symantec backup_exec | CVSS: 6.5 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2011-0546 (symantec backup_exec)...")
    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 symantec backup_exec scope (11.0).")
        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-2011-0546.sh
# Recommended Remediation & Patching Commands for CVE-2011-0546
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install backup_exec 2>/dev/null || \
sudo dnf upgrade backup_exec 2>/dev/null || \
sudo yum update backup_exec

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

# 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-2011-0546 in symantec backup_exec?

Review vendor-specific security notices and update symantec backup_exec 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-2011-0546?

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-2011-0546?

CVE-2011-0546 is classified with a CVSS 3.1 Base Score of 6.5 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
6.5
UNKNOWN SEVERITY
CVE ID CVE-2011-0546
Weakness CWE-20
Vendor symantec
Product backup_exec
Published 2011-05-31
Vector AV:A/AC:H/Au:S/C:C/I:C/A:C