UNKNOWN CVSS 4.3
Published: 2012-08-07

CVE-2012-2317

debian php5-common Security Advisory (CVE-2012-2317)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2012-2317 impacting debian php5-common. Evaluated with CVSS Base Score of 4.3 (UNKNOWN).

Original NVD Description

Source: NIST NVD
The Debian php_crypt_revamped.patch patch for PHP 5.3.x, as used in the php5 package before 5.3.3-7+squeeze4 in Debian GNU/Linux squeeze, the php5 package before 5.3.2-1ubuntu4.17 in Ubuntu 10.04 LTS, and the php5 package before 5.3.5-1ubuntu7.10 in Ubuntu 11.04, does not properly handle an empty salt string, which might allow remote attackers to bypass authentication by leveraging an application that relies on the PHP crypt function to choose a salt for password hashing.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Confidentiality
None (C:N)
No data confidentiality impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product debian / php5-common
Affected Versions *
Weakness Enumeration CWE-310

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-2012-2317 impacting debian php5-common.

⚡ Nuclei Detection Template (YAML) cve-2012-2317.yaml
id: cve-2012-2317

info:
  name: debian php5-common - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: unknown
  description: |
    Automated signature & scanner for CVE-2012-2317 affecting debian php5-common.
    Evaluation: The Debian php_crypt_revamped.patch patch for PHP 5.3.x, as used in the php5 package before 5.3.3-7+squeeze4 in Debian GNU/Linux squeeze, the php5 pac...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2012-2317
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:M/Au:N/C:N/I:P/A:N
    cvss-score: 4.3
    cve-id: CVE-2012-2317
    cwe-id: CWE-310
  tags: cve,cve-2012-2317,debian,php5-common,unknown

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "php5-common"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2012-2317.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2012-2317
# Target: debian php5-common | CVSS: 4.3 (UNKNOWN)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2012-2317 (debian php5-common)...")
    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 debian php5-common 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-2012-2317.sh
# Recommended Remediation & Patching Commands for CVE-2012-2317
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install php5-common 2>/dev/null || \
sudo dnf upgrade php5-common 2>/dev/null || \
sudo yum update php5-common

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i php5-common 2>/dev/null || rpm -qa | grep -i php5-common

# 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-2012-2317 in debian php5-common?

Review vendor-specific security notices and update debian php5-common 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-2012-2317?

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-2012-2317?

CVE-2012-2317 is classified with a CVSS 3.1 Base Score of 4.3 (UNKNOWN). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.3
UNKNOWN SEVERITY
CVE ID CVE-2012-2317
Weakness CWE-310
Vendor debian
Product php5-common
Published 2012-08-07
Vector AV:N/AC:M/Au:N/C:N/I:P/A:N