CRITICAL CVSS 9.3
Published: 2022-08-12

CVE-2022-35942

linuxfoundation loopback-connector-postgresql Security Advisory (CVE-2022-35942)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2022-35942 impacting linuxfoundation loopback-connector-postgresql. Evaluated with CVSS Base Score of 9.3 (CRITICAL).

Original NVD Description

Source: NIST NVD
Improper input validation on the `contains` LoopBack filter may allow for arbitrary SQL injection. When the extended filter property `contains` is permitted to be interpreted by the Postgres connector, it is possible to inject arbitrary SQL which may affect the confidentiality and integrity of data stored on the connected database. A patch was released in version 5.5.1. This affects users who does any of the following: - Connect to the database via the DataSource with `allowExtendedProperties: true` setting OR - Uses the connector's CRUD methods directly OR - Uses the connector's other methods to interpret the LoopBack filter. Users who are unable to upgrade should do the following if applicable: - Remove `allowExtendedProperties: true` DataSource setting - Add `allowExtendedProperties: false` DataSource setting - When passing directly to the connector functions, manually sanitize the user input for the `contains` LoopBack filter beforehand.

📊 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
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
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product linuxfoundation / loopback-connector-postgresql
Affected Versions *
Weakness Enumeration CWE-89

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-2022-35942 impacting linuxfoundation loopback-connector-postgresql.

⚡ Nuclei Detection Template (YAML) cve-2022-35942.yaml
id: cve-2022-35942

info:
  name: linuxfoundation loopback-connector-postgresql - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2022-35942 affecting linuxfoundation loopback-connector-postgresql.
    Evaluation: Improper input validation on the `contains` LoopBack filter may allow for arbitrary SQL injection. When the extended filter property `contains` is per...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2022-35942
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 9.3
    cve-id: CVE-2022-35942
    cwe-id: CWE-89
  tags: cve,cve-2022-35942,linuxfoundation,loopback-connector-postgr,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "loopback-connector-postgresql"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2022-35942.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2022-35942
# Target: linuxfoundation loopback-connector-postgresql | CVSS: 9.3 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2022-35942 (linuxfoundation loopback-connector-postgresql)...")
    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 linuxfoundation loopback-connector-postgresql 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-2022-35942.sh
# Recommended Remediation & Patching Commands for CVE-2022-35942
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install loopback-connector-postgr 2>/dev/null || \
sudo dnf upgrade loopback-connector-postgr 2>/dev/null || \
sudo yum update loopback-connector-postgr

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

# 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-2022-35942 in linuxfoundation loopback-connector-postgresql?

Review vendor-specific security notices and update linuxfoundation loopback-connector-postgresql 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-2022-35942?

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-2022-35942?

CVE-2022-35942 is classified with a CVSS 3.1 Base Score of 9.3 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.3
CRITICAL SEVERITY
CVE ID CVE-2022-35942
Weakness CWE-89
Vendor linuxfoundation
Product loopback-connector-postgresql
Published 2022-08-12
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H