UNKNOWN CVSS 5.0
Published: 2013-04-25

CVE-2012-4464

ruby-lang ruby Security Advisory (CVE-2012-4464)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2012-4464 impacting ruby-lang ruby. Evaluated with CVSS Base Score of 5.0 (UNKNOWN).

Original NVD Description

Source: NIST NVD
Ruby 1.9.3 before patchlevel 286 and 2.0 before revision r37068 allows context-dependent attackers to bypass safe-level restrictions and modify untainted strings via the (1) exc_to_s or (2) name_err_to_s API function, which marks the string as tainted, a different vulnerability than CVE-2012-4466. NOTE: this issue might exist because of a CVE-2011-1005 regression.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Confidentiality
None (C:N)
No data confidentiality impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product ruby-lang / ruby
Affected Versions 1.9.3
Weakness Enumeration CWE-264

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-2012-4464 impacting ruby-lang ruby.

⚡ Nuclei Detection Template (YAML) cve-2012-4464.yaml
id: cve-2012-4464

info:
  name: ruby-lang ruby - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2012-4464 affecting ruby-lang ruby.
    Evaluation: Ruby 1.9.3 before patchlevel 286 and 2.0 before revision r37068 allows context-dependent attackers to bypass safe-level restrictions and modify untain...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2012-4464
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/Au:N/C:N/I:P/A:N
    cvss-score: 5.0
    cve-id: CVE-2012-4464
    cwe-id: CWE-264
  tags: cve,cve-2012-4464,ruby-lang,ruby,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "ruby"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2012-4464.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2012-4464
# Target: ruby-lang ruby | CVSS: 5.0 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2012-4464 (ruby-lang ruby)...")
    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 ruby-lang ruby scope (1.9.3).")
        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-2012-4464.sh
# Recommended Remediation & Patching Commands for CVE-2012-4464
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install ruby 2>/dev/null || \
sudo dnf upgrade ruby 2>/dev/null || \
sudo yum update ruby

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

# 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-2012-4464 in ruby-lang ruby?

Review vendor-specific security notices and update ruby-lang ruby 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-2012-4464?

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-2012-4464?

CVE-2012-4464 is classified with a CVSS 3.1 Base Score of 5.0 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
5.0
UNKNOWN SEVERITY
CVE ID CVE-2012-4464
Weakness CWE-264
Vendor ruby-lang
Product ruby
Published 2013-04-25
Vector AV:N/AC:L/Au:N/C:N/I:P/A:N