GopherGate/SECURITY_AUDIT.md

LLM Proxy Security Audit Report

Executive Summary

A comprehensive security audit of the llm-proxy repository was conducted. The audit identified 1 critical vulnerability, 3 high-risk issues, 4 medium-risk issues, and 3 low-risk issues. The most severe findings include Cross-Site Scripting (XSS) in the dashboard interface and insecure storage of provider API keys in the database.

Detailed Findings

Critical Risk Vulnerabilities

CRITICAL-01: Cross-Site Scripting (XSS) in Dashboard Interface

• Location: static/js/pages/clients.js (multiple locations).
• Description: User-controlled data (e.g., client.id) inserted directly into HTML or onclick handlers without escaping.
• Impact: Arbitrary JavaScript execution in admin context, potentially stealing session tokens.

CRITICAL-02: Insecure API Key Storage in Database

• Location: src/database/mod.rs, src/providers/mod.rs, src/dashboard/providers.rs.
• Description: Provider API keys are stored in plaintext in the SQLite database.
• Impact: Compromised database file exposes all provider API keys.

High Risk Vulnerabilities

HIGH-01: Missing Input Validation and Size Limits

• Location: src/server/mod.rs, src/models/mod.rs.
• Impact: Denial of Service via large payloads.

HIGH-02: Sensitive Data Logging Without Encryption

• Location: src/database/mod.rs, src/logging/mod.rs.
• Description: Full request and response bodies stored in llm_requests table without encryption or redaction.

HIGH-03: Weak Default Credentials and Password Policy

• Description: Default admin password is 'admin' with only 4-character minimum password length.

Medium Risk Vulnerabilities

MEDIUM-01: Missing CSRF Protection

• No CSRF tokens or SameSite cookie attributes for state-changing dashboard endpoints.

MEDIUM-02: Insecure Session Management

• Session tokens stored in localStorage without HttpOnly flag.
• Tokens use simple session-{uuid} format.

MEDIUM-03: Error Information Leakage

• Internal error details exposed to clients in some cases.

MEDIUM-04: Outdated Dependencies

• Outdated versions of chrono, tokio, and reqwest.

Low Risk Vulnerabilities

• Missing security headers (CSP, HSTS, X-Frame-Options).
• Insufficient rate limiting on dashboard authentication.
• No database encryption at rest.

Recommendations

Immediate Actions

1. Fix XSS Vulnerabilities: Implement proper HTML escaping for all user-controlled data.
2. Secure API Key Storage: Encrypt API keys in database using a library like ring.
3. Implement Input Validation: Add maximum payload size limits (e.g., 10MB).
4. Improve Data Protection: Add option to disable request/response body logging.

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Report generated by Security Auditor Agent on March 6, 2026