UNKNOWN CVSS 4.3
Published: 2011-08-15

CVE-2011-0550

symantec endpoint_protection Security Advisory (CVE-2011-0550)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2011-0550 impacting symantec endpoint_protection. Evaluated with CVSS Base Score of 4.3 (UNKNOWN).

Original NVD Description

Source: NIST NVD
Multiple cross-site scripting (XSS) vulnerabilities in the Web Interface in the Endpoint Protection Manager in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.6300 allow remote attackers to inject arbitrary web script or HTML via (1) the token parameter to portal/Help.jsp or (2) the URI in a console/apps/sepm request.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Confidentiality
None (C:N)
No data confidentiality impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product symantec / endpoint_protection
Affected Versions 11.0.6000
Weakness Enumeration CWE-79

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-2011-0550 impacting symantec endpoint_protection.

⚡ Nuclei Detection Template (YAML) cve-2011-0550.yaml
id: cve-2011-0550

info:
  name: symantec endpoint_protection - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2011-0550 affecting symantec endpoint_protection.
    Evaluation: Multiple cross-site scripting (XSS) vulnerabilities in the Web Interface in the Endpoint Protection Manager in Symantec Endpoint Protection (SEP) 11.0...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2011-0550
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:M/Au:N/C:N/I:P/A:N
    cvss-score: 4.3
    cve-id: CVE-2011-0550
    cwe-id: CWE-79
  tags: cve,cve-2011-0550,symantec,endpoint_protection,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "endpoint_protection"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2011-0550.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2011-0550
# Target: symantec endpoint_protection | CVSS: 4.3 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2011-0550 (symantec endpoint_protection)...")
    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 endpoint_protection scope (11.0.6000).")
        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-2011-0550.sh
# Recommended Remediation & Patching Commands for CVE-2011-0550
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install endpoint_protection 2>/dev/null || \
sudo dnf upgrade endpoint_protection 2>/dev/null || \
sudo yum update endpoint_protection

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

# 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.

🔗 Verified Technical References

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2011-0550 in symantec endpoint_protection?

Review vendor-specific security notices and update symantec endpoint_protection 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-2011-0550?

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-2011-0550?

CVE-2011-0550 is classified with a CVSS 3.1 Base Score of 4.3 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.3
UNKNOWN SEVERITY
CVE ID CVE-2011-0550
Weakness CWE-79
Vendor symantec
Product endpoint_protection
Published 2011-08-15
Vector AV:N/AC:M/Au:N/C:N/I:P/A:N