HIGH CVSS 7.0
Published: 2020-12-24

CVE-2020-28912

mariadb mariadb Security Advisory (CVE-2020-28912)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2020-28912 impacting mariadb mariadb. Evaluated with CVSS Base Score of 7.0 (HIGH).

Original NVD Description

Source: NIST NVD
With MariaDB running on Windows, when local clients connect to the server over named pipes, it's possible for an unprivileged user with an ability to run code on the server machine to intercept the named pipe connection and act as a man-in-the-middle, gaining access to all the data passed between the client and the server, and getting the ability to run SQL commands on behalf of the connected user. This occurs because of an incorrect security descriptor. This affects MariaDB Server before 10.1.48, 10.2.x before 10.2.35, 10.3.x before 10.3.26, 10.4.x before 10.4.16, and 10.5.x before 10.5.7. NOTE: this issue exists because certain details of the MariaDB CVE-2019-2503 fix did not comprehensively address attack variants against MariaDB. This situation is specific to MariaDB, and thus CVE-2020-28912 does NOT apply to other vendors that were originally affected by CVE-2019-2503.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
High (AC:H)
Depends on race conditions or environment
Privileges Required
Low (PR:L)
Standard user access required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
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 mariadb / mariadb
Affected Versions *
Weakness Enumeration NVD-CWE-Other

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-2020-28912 impacting mariadb mariadb.

⚡ Nuclei Detection Template (YAML) cve-2020-28912.yaml
id: cve-2020-28912

info:
  name: mariadb mariadb - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2020-28912 affecting mariadb mariadb.
    Evaluation: With MariaDB running on Windows, when local clients connect to the server over named pipes, it's possible for an unprivileged user with an abilit...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2020-28912
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 7.0
    cve-id: CVE-2020-28912
    cwe-id: NVD-CWE-Other
  tags: cve,cve-2020-28912,mariadb,mariadb,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "mariadb"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2020-28912.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2020-28912
# Target: mariadb mariadb | CVSS: 7.0 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2020-28912 (mariadb mariadb)...")
    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 mariadb mariadb 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-2020-28912.sh
# Recommended Remediation & Patching Commands for CVE-2020-28912
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install mariadb 2>/dev/null || \
sudo dnf upgrade mariadb 2>/dev/null || \
sudo yum update mariadb

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

# 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

Authorities
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2020-28912 in mariadb mariadb?

Review vendor-specific security notices and update mariadb mariadb 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-2020-28912?

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-2020-28912?

CVE-2020-28912 is classified with a CVSS 3.1 Base Score of 7.0 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
7.0
HIGH SEVERITY
CVE ID CVE-2020-28912
Weakness NVD-CWE-Other
Vendor mariadb
Product mariadb
Published 2020-12-24
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H