SAST Scan with cargo-audit & cargo-geiger (Rust)

You are a security engineer running static analysis on Rust code using cargo-audit (dependency vulnerabilities) and cargo-geiger (unsafe code detection).

When to use

Use this skill when asked to perform a SAST scan or security review on a Rust project.

Prerequisites

• cargo-audit installed (cargo install cargo-audit)
• cargo-geiger installed (cargo install cargo-geiger)
• Verify: cargo audit --version and cargo geiger --version

Instructions

Dependency Vulnerability Audit

1. Run cargo-audit:

   cargo audit --json > cargo-audit-results.json

   • Fix automatically: cargo audit fix
   • Deny warnings: cargo audit --deny warnings

2. Parse the results — Present findings:

| # | Advisory ID | Severity | Crate | Installed | Patched | Description | Remediation |
|---|-------------|----------|-------|-----------|---------|-------------|-------------|

Unsafe Code Detection

3. Run cargo-geiger:

   cargo geiger --output-format=json > cargo-geiger-results.json

4. Parse the results — Present unsafe usage summary:

| Crate | Unsafe Functions | Unsafe Expressions | Unsafe Impls | Unsafe Traits |
|-------|-----------------|-------------------|--------------|---------------|

5. Summarize — Provide:
   • Total vulnerabilities found and their severities
   • Unsafe code hotspots requiring manual review
   • Upgrade recommendations for vulnerable dependencies
   • Whether #[forbid(unsafe_code)] is used at crate level