MEDIUM CVSS 5.9
Published: 2022-11-22

CVE-2022-2791

emerson proficy Security Advisory (CVE-2022-2791)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2022-2791 impacting emerson proficy. Evaluated with CVSS Base Score of 5.9 (MEDIUM).

Original NVD Description

Source: NIST NVD
Emerson Electric's Proficy Machine Edition Version 9.00 and prior is vulnerable to CWE-434 Unrestricted Upload of File with Dangerous Type, and will upload any file written into the PLC logic folder to the connected PLC.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
Low (PR:L)
Standard user access required
User Interaction
Required (UI:R)
User must click or open resource
Scope
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
None (C:N)
No data confidentiality impact
Integrity
High (I:H)
Total modification of target system
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product emerson / proficy
Affected Versions *
Weakness Enumeration CWE-434

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-2022-2791 impacting emerson proficy.

⚡ Nuclei Detection Template (YAML) cve-2022-2791.yaml
id: cve-2022-2791

info:
  name: emerson proficy - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2022-2791 affecting emerson proficy.
    Evaluation: Emerson Electric's Proficy Machine Edition Version 9.00 and prior is vulnerable to CWE-434 Unrestricted Upload of File with Dangerous Type, and w...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2022-2791
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N
    cvss-score: 5.9
    cve-id: CVE-2022-2791
    cwe-id: CWE-434
  tags: cve,cve-2022-2791,emerson,proficy,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "proficy"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2022-2791.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2022-2791
# Target: emerson proficy | CVSS: 5.9 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2022-2791 (emerson proficy)...")
    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 emerson proficy 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)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2022-2791.sh
# Recommended Remediation & Patching Commands for CVE-2022-2791
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install proficy 2>/dev/null || \
sudo dnf upgrade proficy 2>/dev/null || \
sudo yum update proficy

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

# 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

Distributions
  • No records filed in this category.
Technical Analysis
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2022-2791 in emerson proficy?

Review vendor-specific security notices and update emerson proficy 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-2022-2791?

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-2022-2791?

CVE-2022-2791 is classified with a CVSS 3.1 Base Score of 5.9 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
5.9
MEDIUM SEVERITY
CVE ID CVE-2022-2791
Weakness CWE-434
Vendor emerson
Product proficy
Published 2022-11-22
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N