Security Audit Report - VulnerableVault.sol

# Security Audit Report

VulnerableVault Security Audit

Contract VulnerableVault.sol
Version 1.0.0
Auditor MIESC Automated Security Audit
Organization MIESC Security Framework
Audit Date 2025-12-24
Report ID MIESC-20251224-DEMO

## Executive Summary

56
Risk Score
5
Total Findings
2
Critical
1
High
1
Medium
1
Low

### Overall Risk Assessment

MEDIUM RISK

### Key Statistics

Contract | VulnerableVault.sol
Lines of Code | 32
Solidity Version | 0.8.0
Contract Hash (SHA256) | `fd79f4d86b83fa66...`
Analysis Tools Used | 4
Security Layers Analyzed | 3

## Methodology

This security audit was conducted using MIESC v4.2.1 (Multi-layer Intelligent Evaluation for Smart Contracts), a comprehensive security analysis framework implementing a Defense-in-Depth strategy across 9 specialized security layers.

### Findings by Security Layer

Static Analysis (Layer 1)
3 findings
Pattern Detection (Layer 2)
1 findings
Symbolic Execution (Layer 3)
1 findings

### Findings by Analysis Tool

Slither
2
Mythril
1
SmartBugsDetector
1
Aderyn
1

### Analysis Coverage

Layer | Analysis Type | Description
--- | --- | ---
1 | Static Analysis | AST-based vulnerability detection (Slither, Aderyn)
2 | Pattern Detection | Known vulnerability pattern matching
3 | Symbolic Execution | Path exploration and constraint solving (Mythril)
4 | Fuzzing | Property-based testing (Echidna, Medusa)
5 | Formal Verification | Mathematical correctness proofs (Certora, Halmos)
6 | ML Detection | Graph neural network analysis (DA-GNN)
7 | AI Analysis | LLM-powered semantic analysis (SmartLLM)
8 | DeFi Security | Flash loans, MEV, oracle manipulation
9 | Dependency Security | Supply chain vulnerability scanning

## Detailed Findings

### Critical (2)

Critical Reentrancy Vulnerability in withdraw() VulnerableVault.sol:10-17

#### Description

External call before state update allows reentrant calls. An attacker can recursively call withdraw() before the balance is updated.

SWC: SWC-107 CWE: CWE-841

#### Category

SWC-107 | Detected by: Slither (Layer 1)

#### Remediation

Apply the Checks-Effects-Interactions pattern. Update state variables before making external calls.

Critical Unrestricted setBalance() Function VulnerableVault.sol:24-26

#### Description

Missing access control allows any address to modify user balances arbitrarily.

SWC: SWC-105 CWE: CWE-284

#### Category

SWC-105 | Detected by: Slither (Layer 1)

#### Remediation

Add onlyOwner modifier or implement role-based access control (RBAC).

### High (1)

High Reentrancy Attack Path Confirmed VulnerableVault.sol:12

#### Description

Symbolic execution confirmed exploitable reentrancy path with concrete attack transaction.

SWC: SWC-107

#### Category

SWC-107 | Detected by: Mythril (Layer 3)

#### Remediation

Use ReentrancyGuard from OpenZeppelin or apply CEI pattern.

### Medium (1)

Medium Block Timestamp Dependence VulnerableVault.sol:29

#### Description

Timestamp can be manipulated by miners within a ~15 second window.

SWC: SWC-116

#### Category

SWC-116 | Detected by: SmartBugsDetector (Layer 2)

#### Remediation

Avoid using block.timestamp for critical logic. Use block.number instead.

### Low (1)

Low Missing Zero Address Validation VulnerableVault.sol:24

#### Description

setBalance() does not validate that the user address is not zero.

SWC: SWC-123

#### Category

SWC-123 | Detected by: Aderyn (Layer 1)

#### Remediation

Add require(user != address(0), 'Invalid address') check.

## Raw Tool Outputs (Evidence)

Complete tool outputs preserved for audit trail and verification.

#### Slither

{ "version": "0.10.0", "findings_count": 2, "detectors_run": 92, "execution_time": "0.8s" }

#### Mythril

{ "version": "0.24.7", "findings_count": 1, "symbolic_execution_time": "12.3s" }

#### SmartBugsDetector

{ "version": "1.0.0", "patterns_matched": 1, "patterns_checked": 47 }

#### Aderyn

{ "version": "0.1.0", "findings_count": 1, "ast_analysis": true }

## Disclaimer

This report is provided for informational purposes only and does not constitute legal, financial, or professional advice. The security analysis was performed using automated tools and should be supplemented with manual code review by qualified security professionals.

Smart contract security is an evolving field. This audit represents a point-in-time assessment and does not guarantee the absence of all vulnerabilities. New attack vectors may emerge after this audit.