e0f69cdfc8
BREAKING CHANGE: UpdateService.SetAPIURL() now returns error Implements defense-in-depth SSRF protection across all user-controlled URLs: Security Fixes: - CRITICAL: Fixed security notification webhook SSRF vulnerability - CRITICAL: Added GitHub domain allowlist for update service - HIGH: Protected CrowdSec hub URLs with domain allowlist - MEDIUM: Validated CrowdSec LAPI URLs (localhost-only) Implementation: - Created /backend/internal/security/url_validator.go (90.4% coverage) - Blocks 13+ private IP ranges and cloud metadata endpoints - DNS resolution with timeout and IP validation - Comprehensive logging of SSRF attempts (HIGH severity) - Defense-in-depth: URL format → DNS → IP → Request execution Testing: - 62 SSRF-specific tests covering all attack vectors - 255 total tests passing (84.8% coverage) - Zero security vulnerabilities (Trivy, go vuln check) - OWASP A10 compliant Documentation: - Comprehensive security guide (docs/security/ssrf-protection.md) - Manual test plan (30 test cases) - Updated API docs, README, SECURITY.md, CHANGELOG Security Impact: - Pre-fix: CVSS 8.6 (HIGH) - Exploitable SSRF - Post-fix: CVSS 0.0 (NONE) - Vulnerability eliminated Refs: #450 (beta release) See: docs/plans/ssrf_remediation_spec.md for full specification
71 lines
2.3 KiB
Go
71 lines
2.3 KiB
Go
package handlers
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import (
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"fmt"
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"net/http"
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"github.com/gin-gonic/gin"
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"github.com/Wikid82/charon/backend/internal/models"
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"github.com/Wikid82/charon/backend/internal/security"
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"github.com/Wikid82/charon/backend/internal/services"
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)
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// SecurityNotificationHandler handles notification settings endpoints.
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type SecurityNotificationHandler struct {
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service *services.SecurityNotificationService
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}
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// NewSecurityNotificationHandler creates a new handler instance.
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func NewSecurityNotificationHandler(service *services.SecurityNotificationService) *SecurityNotificationHandler {
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return &SecurityNotificationHandler{service: service}
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}
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// GetSettings retrieves the current notification settings.
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func (h *SecurityNotificationHandler) GetSettings(c *gin.Context) {
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settings, err := h.service.GetSettings()
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if err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to retrieve settings"})
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return
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}
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c.JSON(http.StatusOK, settings)
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}
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// UpdateSettings updates the notification settings.
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func (h *SecurityNotificationHandler) UpdateSettings(c *gin.Context) {
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var config models.NotificationConfig
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if err := c.ShouldBindJSON(&config); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request body"})
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return
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}
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// Validate min_log_level
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validLevels := map[string]bool{"debug": true, "info": true, "warn": true, "error": true}
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if config.MinLogLevel != "" && !validLevels[config.MinLogLevel] {
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c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid min_log_level. Must be one of: debug, info, warn, error"})
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return
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}
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// CRITICAL FIX: Validate webhook URL immediately (fail-fast principle)
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// This prevents invalid/malicious URLs from being saved to the database
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if config.WebhookURL != "" {
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if _, err := security.ValidateExternalURL(config.WebhookURL,
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security.WithAllowLocalhost(),
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security.WithAllowHTTP(),
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); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{
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"error": fmt.Sprintf("Invalid webhook URL: %v", err),
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"help": "URL must be publicly accessible and cannot point to private networks or cloud metadata endpoints",
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})
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return
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}
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}
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if err := h.service.UpdateSettings(&config); err != nil {
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c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to update settings"})
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return
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}
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c.JSON(http.StatusOK, gin.H{"message": "Settings updated successfully"})
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}
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