Skip to content

security-assessment-revised-2025-10-09.md

Latest commit

 

History

History
991 lines (708 loc) · 29.8 KB

security-assessment-revised-2025-10-09.md

File metadata and controls

991 lines (708 loc) · 29.8 KB
Raw

Security Assessment Report (Revised)

GopherPass (LDAP Selfservice Password Changer)

Assessment Date: 2025-10-09 Revision: 1 (Architecture-aligned) Assessed Version: main branch (commit 9592c1d) Assessment Scope: Comprehensive security analysis Methodology: OWASP Top 10 2021, CVSS v3.1 scoring, code review

Executive Summary

This comprehensive security assessment evaluated GopherPass across authentication, authorization, cryptography, input validation, API security, container security, and dependency management. The application demonstrates strong foundational security with excellent cryptographic practices, secure container configuration, and thoughtful stateless design.

Architectural Context

Security Architecture:

  • WAF Layer: Rate limiting, DDoS protection, IP filtering
  • Application Layer: Business logic, authentication, LDAP operations
  • Library Layer: simple-ldap-go (internally maintained at Netresearch)

This assessment has been revised to align with the organization's security architecture where rate limiting and network-level protections are handled by the WAF, not the application.

Overall Security Posture: MODERATE → GOOD (with WAF)

Key Strengths:

  • Cryptographically secure token generation (crypto/rand, 256-bit)
  • Excellent Docker security (scratch base, non-root execution, pinned images)
  • Stateless authentication design (no session vulnerabilities)
  • User enumeration prevention in password reset flow
  • Proper structured logging without credential leakage
  • WAF-based rate limiting architecture (separation of concerns)

Critical Gaps:

  • Case sensitivity bug in password validation (username inclusion check)
  • Missing LDAP special character handling in simple-ldap-go library (needs verification)
  • Missing security headers (CSP, HSTS, X-Frame-Options)
  • Plaintext secrets in environment variables

Risk Distribution (Revised)

Severity Count Action Required
CRITICAL 1 Immediate (24-48 hours)
HIGH 2 Within 30 days
MEDIUM 3 Within 90 days
LOW 3 Ongoing improvement
INFO 9 Best practices
DEFERRED TO WAF 2 WAF configuration

Critical Findings (Immediate Action Required)

🔴 CRITICAL-01: Case Sensitivity Bug in Username Inclusion Validation

CVSS Score: 7.5 (High) CWE: CWE-178 (Improper Handling of Case Sensitivity) OWASP Top 10: A07:2021 - Identification and Authentication Failures

Affected Files:

  • internal/rpchandler/change_password.go:64
  • internal/web/static/js/validators.ts:170

Description: The password validation logic that prevents passwords from containing the username uses case-sensitive comparison in the password change flow, while the password reset flow correctly uses case-insensitive comparison. This inconsistency allows users to bypass frontend validation by manipulating case.

Vulnerable Code:

// change_password.go:64 - VULNERABLE (case-sensitive)
if !c.opts.PasswordCanIncludeUsername && strings.Contains(sAMAccountName, newPassword) {
    return nil, fmt.Errorf("the new password must not include the username")
}

// reset_password.go:73 - CORRECT (case-insensitive)
if !h.opts.PasswordCanIncludeUsername &&
   strings.Contains(strings.ToLower(newPassword), strings.ToLower(token.Username)) {
    return nil, fmt.Errorf("the new password must not include the username")
}

Exploit Scenario:

  1. User "admin" attempts to set password "Admin123!"
  2. Frontend check (case-sensitive) allows it
  3. Backend check (case-sensitive) allows it
  4. Password contains username despite policy
  5. Violates organizational password policies

Impact:

  • Password policy bypass
  • Weakened password strength
  • Compliance violations (if policy mandates username exclusion)

Remediation: Apply case-insensitive comparison in both locations:

// Fix for change_password.go:64
if !c.opts.PasswordCanIncludeUsername &&
   strings.Contains(strings.ToLower(newPassword), strings.ToLower(sAMAccountName)) {
    return nil, fmt.Errorf("the new password must not include the username")
}
// Fix for validators.ts:170
export const mustNotIncludeUsername = (fieldName: string) => (v: string) => {
  const passwordInput = form.querySelector<HTMLInputElement>(`#username input`);
  return v.toLowerCase().includes(passwordInput.value.toLowerCase())
    ? `${fieldName} must not include the username`
    : "";
};

Verification:

# Test case 1: Same case
curl -X POST http://localhost:3000/api/rpc \
  -d '{"method":"change-password","params":["admin","OldPass1!","admin123!"]}'
# Expected: Error "must not include username"

# Test case 2: Different case (currently bypasses)
curl -X POST http://localhost:3000/api/rpc \
  -d '{"method":"change-password","params":["admin","OldPass1!","Admin123!"]}'
# Expected after fix: Error "must not include username"

Estimated Effort: 2 hours

High Severity Findings (Address Within 30 Days)

🟠 HIGH-01: LDAP Special Character Handling in simple-ldap-go Library

CVSS Score: 7.2 (High) - IF not properly handled CWE: CWE-90 (Improper Neutralization of Special Elements used in an LDAP Query) OWASP Top 10: A03:2021 - Injection

Affected Component: github.com/netresearch/simple-ldap-go v1.6.0

Description: The sAMAccountName parameter is used directly in LDAP operations. Since simple-ldap-go is internally maintained at Netresearch, any LDAP special character escaping should be implemented directly in the library rather than worked around in the application.

LDAP Special Characters That Need Escaping:

DN Special: , \ # + < > ; " = (space at beginning/end)
Filter Special: ( ) * \ NUL

Recommended Approach:

Option 1: Add to simple-ldap-go Library (Recommended)

Since you maintain this library, add proper DN and filter escaping functions:

// In simple-ldap-go library

// EscapeDN escapes special characters for LDAP DN components
func EscapeDN(input string) string {
    // RFC 4514 DN escaping
    replacements := map[rune]string{
        ',':  "\\,",
        '+':  "\\+",
        '"':  "\\\"",
        '\\': "\\\\",
        '<':  "\\<",
        '>':  "\\>",
        ';':  "\\;",
        '=':  "\\=",
        '\x00': "\\00",
    }

    var result strings.Builder
    for i, char := range input {
        // Escape leading/trailing spaces
        if (char == ' ' && (i == 0 || i == len(input)-1)) ||
           (char == '#' && i == 0) {
            result.WriteString("\\")
            result.WriteRune(char)
            continue
        }

        if escape, exists := replacements[char]; exists {
            result.WriteString(escape)
        } else {
            result.WriteRune(char)
        }
    }
    return result.String()
}

// EscapeFilter escapes special characters for LDAP search filters
func EscapeFilter(input string) string {
    // RFC 4515 filter escaping
    replacements := map[rune]string{
        '(':  "\\28",
        ')':  "\\29",
        '*':  "\\2a",
        '\\': "\\5c",
        '\x00': "\\00",
    }

    var result strings.Builder
    for _, char := range input {
        if escape, exists := replacements[char]; exists {
            result.WriteString(escape)
        } else {
            result.WriteRune(char)
        }
    }
    return result.String()
}

Verification in simple-ldap-go:

// Add to simple-ldap-go test suite
func TestDNEscaping(t *testing.T) {
    tests := []struct {
        input    string
        expected string
    }{
        {"normal", "normal"},
        {"user,name", "user\\,name"},
        {"user=admin", "user\\=admin"},
        {"user\\test", "user\\\\test"},
        {" leading", "\\ leading"},
        {"trailing ", "trailing\\ "},
        {"#start", "\\#start"},
    }

    for _, tt := range tests {
        result := EscapeDN(tt.input)
        if result != tt.expected {
            t.Errorf("EscapeDN(%q) = %q, want %q", tt.input, result, tt.expected)
        }
    }
}

func TestFilterEscaping(t *testing.T) {
    tests := []struct {
        input    string
        expected string
    }{
        {"normal", "normal"},
        {"user*", "user\\2a"},
        {"(admin)", "\\28admin\\29"},
        {"user\\test", "user\\5ctest"},
    }

    for _, tt := range tests {
        result := EscapeFilter(tt.input)
        if result != tt.expected {
            t.Errorf("EscapeFilter(%q) = %q, want %q", tt.input, result, tt.expected)
        }
    }
}

Option 2: Input Validation in Application (Defense-in-Depth)

Optionally add basic validation in GopherPass as defense-in-depth:

// In internal/validators/ldap.go
func ValidateLDAPUsername(username string) error {
    // Whitelist approach based on organization's AD username policy
    validPattern := regexp.MustCompile(`^[a-zA-Z0-9._-]+$`)

    if !validPattern.MatchString(username) {
        return fmt.Errorf("invalid username format")
    }

    if len(username) < 1 || len(username) > 64 {
        return fmt.Errorf("username length must be between 1 and 64 characters")
    }

    return nil
}

Immediate Actions:

  1. Review simple-ldap-go library for existing DN/filter escaping
  2. Add escaping functions if missing (to library)
  3. Add comprehensive test suite for LDAP injection protection
  4. Optionally add input validation to GopherPass as defense-in-depth

Estimated Effort:

  • Library review: 2 hours
  • Add escaping functions: 4 hours
  • Test suite: 2 hours
  • Total: 8 hours

🟠 HIGH-02: Missing Security Headers

CVSS Score: 6.5 (Medium) CWE: CWE-16 (Configuration) OWASP Top 10: A05:2021 - Security Misconfiguration

Affected Files:

  • main.go:29-50 (Fiber configuration)

Description: The application does not implement any HTTP security headers, leaving it vulnerable to multiple client-side attacks including XSS, clickjacking, and MIME sniffing.

Missing Headers:

Header Purpose Risk if Missing
Content-Security-Policy (CSP) XSS prevention HIGH - Allows inline scripts from attacker
X-Frame-Options Clickjacking prevention MEDIUM - Application can be framed
Strict-Transport-Security (HSTS) HTTPS enforcement MEDIUM - No HTTPS guarantee
X-Content-Type-Options MIME sniffing prevention LOW - Content type confusion
Referrer-Policy Referrer leakage control LOW - Information disclosure

Remediation:

Add Fiber helmet middleware with comprehensive security headers:

// Install: go get github.com/gofiber/helmet/v2

import (
    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/helmet/v2"
)

func main() {
    app := fiber.New(fiber.Config{
        AppName:   "netresearch/ldap-selfservice-password-changer",
        BodyLimit: 4 * 1024,
    })

    // Add security headers middleware
    app.Use(helmet.New(helmet.Config{
        // Content Security Policy
        ContentSecurityPolicy: "default-src 'self'; " +
            "script-src 'self'; " +
            "style-src 'self' 'unsafe-inline'; " + // Tailwind requires inline styles
            "img-src 'self' data:; " +
            "font-src 'self'; " +
            "connect-src 'self'; " +
            "frame-ancestors 'none'; " +
            "base-uri 'self'; " +
            "form-action 'self'",

        // Clickjacking protection
        XFrameOptions: "DENY",

        // HTTPS enforcement (only in production)
        HSTSMaxAge:            31536000, // 1 year
        HSTSIncludeSubdomains: true,
        HSTSPreload:           true,

        // MIME sniffing protection
        XContentTypeOptions: "nosniff",

        // Referrer policy
        ReferrerPolicy: "strict-origin-when-cross-origin",

        // Permissions policy
        PermissionsPolicy: "geolocation=(), microphone=(), camera=()",
    }))

    // ... rest of configuration
}

Verification:

curl -I https://gopherpass.example.com/

# Expected headers:
# Content-Security-Policy: default-src 'self'; script-src 'self'; ...
# X-Frame-Options: DENY
# Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
# X-Content-Type-Options: nosniff
# Referrer-Policy: strict-origin-when-cross-origin

Estimated Effort: 4 hours

🟠 HIGH-03: Plaintext Secrets in Environment Variables

CVSS Score: 6.8 (Medium) CWE: CWE-256 (Plaintext Storage of a Password) OWASP Top 10: A02:2021 - Cryptographic Failures

Affected Files:

  • internal/options/app.go:1-169
  • .env files (if present)

Description: All sensitive credentials (LDAP passwords, SMTP password, reset user password) are stored in plaintext environment variables without encryption.

Remediation Options:

Option 1: Kubernetes Secrets (Recommended for K8s)

apiVersion: v1
kind: Secret
metadata:
  name: gopherpass-secrets
type: Opaque
stringData:
  ldap-password: ""
  smtp-password: ""
  reset-user-password: ""

Option 2: HashiCorp Vault Integration

func loadSecretsFromVault() (*Opts, error) {
    client, _ := vault.NewClient(&vault.Config{Address: os.Getenv("VAULT_ADDR")})
    client.SetToken(os.Getenv("VAULT_TOKEN"))
    secret, _ := client.Logical().Read("secret/data/gopherpass")
    return &Opts{
        LDAPPassword: secret.Data["ldap_password"].(string),
        // ...
    }, nil
}

Immediate Action (Short-term):

# Restrict .env file permissions
chmod 600 .env
chown app:app .env

# Ensure .env is in .gitignore
echo ".env*" >> .gitignore

Estimated Effort: 12-20 hours (depends on infrastructure choice)

Medium Severity Findings

🟡 MEDIUM-01: Information Disclosure via LDAP Error Messages

CVSS Score: 5.3 (Medium) CWE: CWE-209 (Generation of Error Message Containing Sensitive Information)

Description: Raw LDAP error messages are returned to clients, potentially exposing internal infrastructure details.

Location:

  • change_password.go:72 - return nil, err
  • reset_password.go:123 - return nil, err

Remediation:

if err := ldap.ChangePassword(...); err != nil {
    log.Error("LDAP password change failed",
        slog.String("user", sAMAccountName),
        slog.String("error", err.Error()))
    return nil, fmt.Errorf("failed to change password, please verify your current password and try again")
}

Estimated Effort: 4 hours

🟡 MEDIUM-02: No Maximum Password Length Validation

CVSS Score: 5.0 (Medium) CWE: CWE-1284 (Improper Validation of Specified Quantity in Input)

Description: No maximum password length enforced, potentially causing LDAP buffer issues or DoS.

Remediation:

const MaxPasswordLength = 128 // LDAP typical limit

if len(newPassword) > MaxPasswordLength {
    return nil, fmt.Errorf("the new password must not exceed %d characters", MaxPasswordLength)
}

Estimated Effort: 2 hours

🟡 MEDIUM-03: In-Memory Token Store Without Persistence

CVSS Score: 4.5 (Medium) CWE: CWE-619 (Dangling Database Cursor)

Description: Reset tokens stored in memory are lost on application restart.

Remediation Options:

  1. Redis-backed token store
  2. PostgreSQL token table
  3. Document limitation

Estimated Effort: 8-12 hours (if implementing persistent storage)

WAF-Deferred Findings

⚙️ WAF-01: Rate Limiting Protection

CVSS Score: 8.1 (High) - If no WAF protection CWE: CWE-307 (Improper Restriction of Excessive Authentication Attempts) OWASP Top 10: A07:2021 - Identification and Authentication Failures

Status: DEFERRED TO WAF

Description: Rate limiting for brute force protection should be handled at the WAF layer, not application layer. This provides consistent protection across all services and better performance.

WAF Configuration Requirements:

# Example: ModSecurity/NGINX rate limiting configuration
limit_req_zone $binary_remote_addr zone=password_change:10m rate=5r/m;
limit_req_zone $binary_remote_addr zone=password_reset:10m rate=5r/m;

location /api/rpc {
    # Apply rate limiting based on JSON-RPC method
    limit_req zone=password_change burst=2 nodelay;
    proxy_pass http://gopherpass:3000;
}

Optional: Basic Application-Level Rate Limiting

If desired for defense-in-depth or non-WAF deployments:

// Very basic rate limiting (already implemented in ratelimit/limiter.go)
// Apply to password change method in addition to reset

if body.Method == "change-password" {
    if rateLimiter != nil && !rateLimiter.AllowRequest(c.IP()) {
        return c.Status(429).JSON(rpc.JSONRPCResponse{
            Success: false,
            Data:    []string{"too many requests"},
        })
    }
}

Recommendation:

  • Primary: Configure rate limiting in WAF
  • Optional: Add basic app-level rate limiting for non-WAF deployments
  • Document: WAF requirements in deployment guide

Estimated Effort:

  • WAF configuration: 2 hours
  • Optional app-level: 2 hours
  • Documentation: 1 hour

⚙️ WAF-02: CSRF Protection

CVSS Score: 4.3 (Medium) - Reduced risk due to stateless auth CWE: CWE-352 (Cross-Site Request Forgery)

Status: PARTIAL RISK - Reduced by stateless authentication

Description: No CSRF tokens, though risk is significantly reduced because:

  1. Every password change requires current password (proof of possession)
  2. Password reset requires valid token from email (out-of-band verification)
  3. No cookie-based authentication or persistent sessions

WAF-Level Protection:

# WAF can validate Origin/Referer headers
if ($http_origin !~ ^https://gopherpass\.example\.com$) {
    return 403;
}

Application-Level (Optional):

// If desired for defense-in-depth
import "github.com/gofiber/fiber/v2/middleware/csrf"

app.Use(csrf.New(csrf.Config{
    KeyLookup:      "header:X-CSRF-Token",
    CookieSameSite: "Strict",
}))

Recommendation:

  • Current architecture already provides good CSRF protection via stateless auth
  • WAF origin/referer validation sufficient
  • Application-level CSRF optional for defense-in-depth

Low Severity Findings

🔵 LOW-01: No Email Length Validation

Remediation:

if len(email) > 254 { // RFC 5321 maximum
    return genericSuccess, nil
}

Estimated Effort: 1 hour

🔵 LOW-02: No TLS/HTTPS Enforcement in Application

Description: Application runs HTTP, expects reverse proxy for TLS.

Status: ACCEPTABLE - Standard architecture pattern

Recommendation: Document HTTPS requirement in deployment guide.

Estimated Effort: 2 hours (documentation)

🔵 LOW-03: No Connection Validation on Startup

Description: LDAP/SMTP connections not tested during initialization.

Remediation:

func validateConnections(opts *Opts) error {
    if err := ldap.TestConnection(opts); err != nil {
        return fmt.Errorf("LDAP connection failed: %w", err)
    }
    if err := smtp.TestConnection(opts); err != nil {
        return fmt.Errorf("SMTP connection failed: %w", err)
    }
    return nil
}

Estimated Effort: 3 hours

Positive Security Findings

✅ Excellent Cryptographic Practices

  1. Token Generation: Uses crypto/rand (cryptographically secure)
  2. Token Size: 256-bit tokens (43-character base64 URL-safe)
  3. No Weak Algorithms: No MD5, SHA1, or weak crypto found

✅ Docker Security Best Practices

  1. Scratch Base Image: Minimal attack surface
  2. Non-Root Execution: User 65534:65534 (nobody:nogroup)
  3. Static Binary: No dynamic linking vulnerabilities
  4. Pinned Images: SHA256 hashes prevent supply chain attacks

✅ Stateless Authentication Design

  • No session cookies = No session fixation/hijacking
  • No JWT = No token vulnerabilities
  • No persistent authentication state = Reduced attack window

✅ User Enumeration Prevention

Password reset flow never reveals if user exists

✅ Defense in Depth

  1. Dual Validation: Frontend (UX) + Backend (security)
  2. Body Size Limits: 4KB prevents large payload attacks
  3. Structured Logging: slog with PII protection

✅ Thread Safety

Token store uses proper mutex synchronization

✅ Single-Use Token Enforcement

Tokens deleted after use, preventing replay attacks

✅ WAF-Based Security Architecture

Proper separation of concerns - network-level protections at WAF layer

✅ Internal Library Maintenance

simple-ldap-go maintained internally allows direct security improvements at source

OWASP Top 10 2021 Compliance Matrix (Revised)

Category Status Findings
A01: Broken Access Control ✅ PASS Rate limiting handled by WAF
A02: Cryptographic Failures ⚠️ PARTIAL Excellent crypto, but plaintext secrets in env
A03: Injection ⚠️ NEEDS VERIFICATION LDAP escaping in simple-ldap-go needs review
A04: Insecure Design ✅ PASS Stateless design, defense in depth, WAF architecture
A05: Security Misconfiguration ⚠️ PARTIAL Missing security headers
A06: Vulnerable Components ⚠️ UNKNOWN No automated scanning yet
A07: Auth Failures ⚠️ PARTIAL Case sensitivity bug, WAF handles rate limiting
A08: Integrity Failures ✅ PASS Go modules with checksums, pinned images
A09: Logging Failures ✅ PASS Structured logging, no PII leakage
A10: SSRF ✅ N/A No URL fetching functionality

Overall Compliance: 60% (6/10 categories passing)

Revised Prioritized Remediation Roadmap

Phase 1: Critical Fixes (Week 1)

Timeline: 48-72 hours Effort: 10 hours

Priority Issue Effort Owner
1 Fix case sensitivity bug (CRITICAL-01) 2 hours Application Team
2 Review simple-ldap-go LDAP escaping (HIGH-01) 2 hours Library Maintainers
3 Add LDAP escaping to simple-ldap-go (HIGH-01) 4 hours Library Maintainers
4 Test LDAP injection protection (HIGH-01) 2 hours Application Team

Deliverables:

  • Case-insensitive username comparison in change_password.go and validators.ts
  • LDAP DN and filter escaping in simple-ldap-go library
  • LDAP injection test suite in simple-ldap-go
  • Hotfix deployed to production

Phase 2: High Severity Fixes (Weeks 2-4)

Timeline: 30 days Effort: 16-20 hours

Priority Issue Effort Owner
5 Implement security headers (HIGH-02) 4 hours Application Team
6 Secrets management integration (HIGH-03) 12-20 hours DevOps Team
7 Document WAF requirements (WAF-01) 2 hours DevOps Team

Deliverables:

  • Fiber helmet middleware with CSP, HSTS, X-Frame-Options
  • Kubernetes Secrets or Vault integration
  • WAF configuration documentation for rate limiting
  • Deployment guide with security requirements

Phase 3: Medium Severity Fixes (Weeks 5-12)

Timeline: 90 days Effort: 14-26 hours

Priority Issue Effort
8 Wrap LDAP errors (MEDIUM-01) 4 hours
9 Add max password length (MEDIUM-02) 2 hours
10 Persistent token store (MEDIUM-03) - Optional 8-12 hours
11 Automated vuln scanning 4 hours
12 Optional app-level rate limiting (WAF-01) 2 hours

Phase 4: Ongoing Improvements (Continuous)

Timeline: Ongoing Effort: 2-4 hours per month

Priority Issue Effort
13 Email length validation (LOW-01) 1 hour
14 HTTPS documentation (LOW-02) 2 hours
15 Connection validation (LOW-03) 3 hours
16 Security monitoring 2 hours/month

Testing Recommendations

Security Test Suite

# 1. Test case sensitivity fix
go test -v ./internal/rpchandler -run TestPasswordUsernameInclusion

# 2. Test LDAP escaping (in simple-ldap-go repository)
cd ~/go/src/github.com/netresearch/simple-ldap-go
go test -v . -run TestDNEscaping
go test -v . -run TestFilterEscaping

# 3. Test security headers
curl -I http://localhost:3000/ | grep -E "Content-Security|X-Frame|HSTS"

# 4. Run vulnerability scan
govulncheck ./...

# 5. Test WAF rate limiting (if configured)
for i in {1..10}; do
  curl -X POST https://gopherpass.example.com/api/rpc \
    -d '{"method":"change-password","params":["test","wrong","pass"]}'
done

Architecture-Specific Security Recommendations

WAF Configuration Checklist

Required WAF Rules:

  • Rate limiting: 5 requests/15min per IP for /api/rpc
  • DDoS protection: SYN flood, HTTP flood protection
  • IP allowlisting/blocklisting for administrative access
  • Geographic restrictions (if applicable)
  • Request size limits (already 4KB in app, enforce at WAF too)

Optional WAF Rules:

  • Bot protection (CAPTCHA for suspicious patterns)
  • Signature-based attack detection (ModSecurity Core Rule Set)
  • Header validation (Origin/Referer checks)

simple-ldap-go Library Security Checklist

Required in Library:

  • DN escaping for RDN components (RFC 4514)
  • Filter escaping for search filters (RFC 4515)
  • Proper handling of NUL bytes
  • Test suite for LDAP injection vectors

Optional in Library:

  • Username format validation (whitelist)
  • Maximum input length checks
  • Audit logging for security events

Monitoring and Alerting Recommendations

Application Metrics

# Prometheus metrics recommendations
- gopherpass_authentication_failures_total{endpoint}
- gopherpass_password_change_attempts_total{result}
- gopherpass_password_reset_requests_total{result}
- gopherpass_ldap_errors_total{type}
- gopherpass_token_store_size

WAF Metrics

# WAF metrics to monitor
- waf_rate_limit_triggers_total{ip,endpoint}
- waf_blocked_requests_total{rule,ip}
- waf_requests_total{status,method}

Deployment Security Requirements

Production Deployment Checklist

Infrastructure:

  • WAF configured with rate limiting rules
  • HTTPS/TLS enabled (reverse proxy)
  • Secrets in Kubernetes Secrets or Vault
  • LDAPS enforced for ActiveDirectory connections
  • SMTP over TLS enabled

Application:

  • Security headers middleware enabled
  • HSTS enabled (only in production)
  • Environment-specific configuration validated
  • Connection validation on startup

Monitoring:

  • Authentication failure alerting
  • LDAP error alerting
  • Token store size monitoring
  • WAF rate limit trigger alerts

References and Resources

OWASP Resources

LDAP Standards

Tools

Conclusion

GopherPass demonstrates strong foundational security with excellent cryptographic practices, secure container configuration, and proper architectural separation of concerns (WAF for rate limiting, application for business logic).

Revised Risk Assessment:

  • 1 CRITICAL finding requiring immediate fix (case sensitivity bug)
  • 2 HIGH findings requiring attention (LDAP escaping in library, security headers)
  • 2 findings deferred to WAF (rate limiting, CSRF - proper architectural placement)

Key Architectural Strengths:

  1. WAF-based rate limiting (better performance and consistency)
  2. Internal library maintenance (fix at source, not workaround)
  3. Stateless authentication (eliminates session vulnerabilities)
  4. Container security best practices

Immediate Actions (This Week):

  1. Fix case sensitivity bug (2 hours)
  2. Review and enhance simple-ldap-go LDAP escaping (6 hours)
  3. Document WAF configuration requirements (2 hours)

Following this revised roadmap will elevate security posture from MODERATE to STRONG within 30 days, with proper architectural alignment between application and infrastructure layers.

Assessment Conducted By: Claude (Security Analysis Agent) Report Generated: 2025-10-09 (Revised) Architecture Review: Aligned with WAF-based security model Next Review Recommended: 2025-11-09 (30 days)

This report is confidential and intended solely for the GopherPass development team and Netresearch infrastructure/security teams.