HIGH CVSS 7.5
Published: 2023-12-21

CVE-2023-5594

eset endpoint_antivirus Security Advisory (CVE-2023-5594)
โ†— Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2023-5594 impacting eset endpoint_antivirus. Evaluated with CVSS Base Score of 7.5 (HIGH).

Original NVD Description

Source: NIST NVD
Improper validation of the serverโ€™s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.

๐Ÿ“Š CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
High (AC:H)
Depends on race conditions or environment
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
High (C:H)
Total information disclosure
Integrity
Low (I:L)
Partial data modification possible
Availability
None (A:N)
No system availability impact

๐ŸŽฏ Affected Versions Matrix

Affected Product eset / endpoint_antivirus
Affected Versions *
Weakness Enumeration CWE-295

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-2023-5594 impacting eset endpoint_antivirus.

โšก Nuclei Detection Template (YAML) cve-2023-5594.yaml
id: cve-2023-5594

info:
  name: eset endpoint_antivirus - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2023-5594 affecting eset endpoint_antivirus.
    Evaluation: Improper validation of the serverโ€™s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or S...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2023-5594
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
    cvss-score: 7.5
    cve-id: CVE-2023-5594
    cwe-id: CWE-295
  tags: cve,cve-2023-5594,eset,endpoint_antivirus,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "endpoint_antivirus"
        part: body
๐Ÿ PoC Exploit & Verification Probe (Python 3) poc_cve-2023-5594.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2023-5594
# Target: eset endpoint_antivirus | CVSS: 7.5 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2023-5594 (eset endpoint_antivirus)...")
    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 eset endpoint_antivirus scope (*).")
        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)
๐Ÿ›ก๏ธ Quick Patch & Remediation Script (Bash) patch_cve-2023-5594.sh
# Recommended Remediation & Patching Commands for CVE-2023-5594
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install endpoint_antivirus 2>/dev/null || \
sudo dnf upgrade endpoint_antivirus 2>/dev/null || \
sudo yum update endpoint_antivirus

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

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

๐Ÿ›ก๏ธ 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.
โš ๏ธ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

โ“ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2023-5594 in eset endpoint_antivirus?

Review vendor-specific security notices and update eset endpoint_antivirus 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-2023-5594?

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-2023-5594?

CVE-2023-5594 is classified with a CVSS 3.1 Base Score of 7.5 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.5
HIGH SEVERITY
CVE ID CVE-2023-5594
Weakness CWE-295
Vendor eset
Product endpoint_antivirus
Published 2023-12-21
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N