fix(security): resolve Snyk Code findings — Tar Slip, Path Traversal, Open Redirect, XSS

Tar Slip (CWE-22) — 3 import services:
  threat_actor, lolbas, caldera: add path validation before extractall()
  to prevent malicious zip members with ../ escaping the target directory.
  (sigma, elastic, atomic already had this protection)

Path Traversal (CWE-23) — professional_reports.py:
  Add _assert_safe_report_path() check on all 5 report endpoints to
  verify the generated filepath stays within REPORT_OUTPUT_DIR.

Open Redirect (CWE-601) — sso.py:
  Validate IdP redirect URL scheme (must be http/https) before
  issuing RedirectResponse, blocking javascript: and data: redirects.

DOM XSS (CWE-79) — 4 frontend pages:
  Create src/utils/url.ts with safeUrl() that rejects non-http/https
  protocols; apply to actor.mitre_url, ref.url, intel.url.
  Sanitize framework name to alphanumeric-only before DOM insertion.
  Restrict evidence MIME types to an explicit safe allowlist (png/jpg/gif/webp).

Hardcoded credentials (CWE-798):
  verify_gaps.py, create_wiki.py: replace literal passwords with
  environment variable reads (AEGIS_ADMIN_PASSWORD, GITEA_PASSWORD).

backend/app/routers/professional_reports.py

@@ -2,9 +2,10 @@
 
 # Import UUID from uuid
 from uuid import UUID
+from pathlib import Path
 
-# Import APIRouter, Depends, Query, Request from fastapi
+# Import APIRouter, Depends, HTTPException, Query, Request from fastapi
-from fastapi import APIRouter, Depends, Query, Request
+from fastapi import APIRouter, Depends, HTTPException, Query, Request
 
 # Import FileResponse from fastapi.responses
 from fastapi.responses import FileResponse
@@ -21,12 +22,24 @@ from app.dependencies.auth import get_current_user, require_any_role
 # Import limiter from app.limiter
 from app.limiter import limiter
 
+# Import settings from app.config
+from app.config import settings
+
 # Import User from app.models.user
 from app.models.user import User
 
 # Import report_generation_service from app.services
 from app.services import report_generation_service
 
+
+def _assert_safe_report_path(filepath: str) -> str:
+    """Raise 500 if the generated filepath escapes the configured report directory."""
+    output_dir = Path(settings.REPORT_OUTPUT_DIR).resolve()
+    resolved = Path(filepath).resolve()
+    if not resolved.is_relative_to(output_dir):
+        raise HTTPException(status_code=500, detail="Report generation path error")
+    return filepath
+
 # Assign router = APIRouter(prefix="/reports/generate", tags=["professional-reports"])
 router = APIRouter(prefix="/reports/generate", tags=["professional-reports"])
 
@@ -65,7 +78,7 @@ def generate_purple_report(
     )
     # Return FileResponse(
     return FileResponse(
-        filepath,
+        _assert_safe_report_path(filepath),
         # Keyword argument: media_type
         media_type=_MEDIA_TYPES[format],
         # Keyword argument: filename
@@ -95,7 +108,7 @@ def generate_coverage_report(
     )
     # Return FileResponse(
     return FileResponse(
-        filepath,
+        _assert_safe_report_path(filepath),
         # Keyword argument: media_type
         media_type=_MEDIA_TYPES[format],
         # Keyword argument: filename
@@ -125,7 +138,7 @@ def generate_executive_report(
     )
     # Return FileResponse(
     return FileResponse(
-        filepath,
+        _assert_safe_report_path(filepath),
         # Keyword argument: media_type
         media_type=_MEDIA_TYPES[format],
         # Keyword argument: filename
@@ -155,7 +168,7 @@ def generate_quarterly_report(
     )
     # Return FileResponse(
     return FileResponse(
-        filepath,
+        _assert_safe_report_path(filepath),
         # Keyword argument: media_type
         media_type=_MEDIA_TYPES[format],
         # Keyword argument: filename
@@ -187,7 +200,7 @@ def generate_technique_report(
     )
     # Return FileResponse(
     return FileResponse(
-        filepath,
+        _assert_safe_report_path(filepath),
         # Keyword argument: media_type
         media_type=_MEDIA_TYPES[format],
         # Keyword argument: filename

backend/app/routers/sso.py

@@ -1,6 +1,7 @@
 """Phase 14: SSO / SAML 2.0 router."""
 
 import os
+from urllib.parse import urlparse
 
 from fastapi import APIRouter, Depends, HTTPException, Request, Response
 from fastapi.responses import RedirectResponse
@@ -74,7 +75,10 @@ def sso_login(request: Request, db: Session = Depends(get_db)):
         result = svc.initiate_login(db, request_data)
     except RuntimeError as exc:
         raise HTTPException(status_code=503, detail=str(exc))
-    return RedirectResponse(url=result["redirect_url"])
+    redirect_url = result["redirect_url"]
+    if urlparse(redirect_url).scheme not in ("http", "https"):
+        raise HTTPException(status_code=400, detail="Invalid IdP redirect URL")
+    return RedirectResponse(url=redirect_url)
 
 
 @router.post("/callback")

backend/app/services/caldera_import_service.py

@@ -102,9 +102,14 @@ def _download_zip(url: str = CALDERA_ZIP_URL) -> bytes:
 # Define function _extract_zip
 def _extract_zip(zip_bytes: bytes, dest: str) -> Path:
     """Extract *zip_bytes* into *dest* and return abilities dir."""
-    # Open context manager
+    dest_path = Path(dest).resolve()
     with zipfile.ZipFile(io.BytesIO(zip_bytes)) as zf:
-        # Call zf.extractall()
+        for member in zf.infolist():
+            target = (dest_path / member.filename).resolve()
+            if not target.is_relative_to(dest_path):
+                raise ValueError(
+                    f"Zip Slip detected — '{member.filename}' resolves outside target directory"
+                )
         zf.extractall(dest)
     # Assign abilities_dir = Path(dest) / _ZIP_ROOT_PREFIX / "data" / "abilities"
     abilities_dir = Path(dest) / _ZIP_ROOT_PREFIX / "data" / "abilities"

backend/app/services/lolbas_import_service.py

@@ -151,11 +151,15 @@ def _download_zip(url: str) -> bytes:
 # Define function _extract_zip
 def _extract_zip(zip_bytes: bytes, dest: str) -> Path:
     """Extract *zip_bytes* into *dest* and return the root directory."""
-    # Open context manager
+    dest_path = Path(dest).resolve()
     with zipfile.ZipFile(io.BytesIO(zip_bytes)) as zf:
-        # Call zf.extractall()
+        for member in zf.infolist():
+            target = (dest_path / member.filename).resolve()
+            if not target.is_relative_to(dest_path):
+                raise ValueError(
+                    f"Zip Slip detected — '{member.filename}' resolves outside target directory"
+                )
         zf.extractall(dest)
-    # Return Path(dest)
     return Path(dest)
 
 

backend/app/services/threat_actor_import_service.py

@@ -112,9 +112,14 @@ def _download_zip(url: str = MITRE_CTI_ZIP_URL) -> bytes:
 # Define function _extract_zip_and_load_bundle
 def _extract_zip_and_load_bundle(zip_bytes: bytes, dest: str) -> dict:
     """Extract ZIP and load the enterprise-attack STIX bundle."""
-    # Open context manager
+    dest_path = Path(dest).resolve()
     with zipfile.ZipFile(io.BytesIO(zip_bytes)) as zf:
-        # Call zf.extractall()
+        for member in zf.infolist():
+            target = (dest_path / member.filename).resolve()
+            if not target.is_relative_to(dest_path):
+                raise ValueError(
+                    f"Zip Slip detected — '{member.filename}' resolves outside target directory"
+                )
         zf.extractall(dest)
 
     # Assign bundle_path = (

frontend/src/pages/CompliancePage.tsx

@@ -102,9 +102,13 @@ export default function CompliancePage() {
     const json = JSON.stringify(frameworkStatus, null, 2);
     const blob = new Blob([json], { type: "application/json" });
     const url = URL.createObjectURL(blob);
+    const safeName = frameworkStatus.framework.name
+      .replace(/[^a-zA-Z0-9\s_-]/g, "")
+      .replace(/\s+/g, "_")
+      .substring(0, 64);
     const a = document.createElement("a");
     a.href = url;
-    a.download = `compliance_${frameworkStatus.framework.name.replace(/\s+/g, "_")}.json`;
+    a.download = `compliance_${safeName}.json`;
     document.body.appendChild(a);
     a.click();
     document.body.removeChild(a);

frontend/src/pages/ImportRTPage.tsx

@@ -373,8 +373,12 @@ export default function ImportRTPage() {
                         <div className="flex items-center gap-1.5">
                           <div className="flex gap-1">
                             {t.evidence.slice(0, 3).map((ev: RTEvidenceEntry, ei: number) => {
-                              const ext = ev.filename.split(".").pop()?.toLowerCase() ?? "png";
+                              const SAFE_MIMES: Record<string, string> = {
-                              const mime = ext === "jpg" || ext === "jpeg" ? "image/jpeg" : `image/${ext}`;
+                                png: "image/png", jpg: "image/jpeg", jpeg: "image/jpeg",
+                                gif: "image/gif", webp: "image/webp",
+                              };
+                              const ext = ev.filename.split(".").pop()?.toLowerCase() ?? "";
+                              const mime = SAFE_MIMES[ext] ?? "image/png";
                               return (
                                 <img
                                   key={ei}

frontend/src/pages/TechniqueDetailPage.tsx

@@ -1,6 +1,7 @@
 import { useState } from "react";
 import { useParams, useNavigate } from "react-router-dom";
 import MarkdownText from "../components/MarkdownText";
+import { safeUrl } from "../utils/url";
 import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
 import {
   Loader2,
@@ -640,7 +641,7 @@ export default function TechniqueDetailPage() {
                   </p>
                 </div>
                 <a
-                  href={intel.url}
+                  href={safeUrl(intel.url)}
                   target="_blank"
                   rel="noopener noreferrer"
                   className="flex items-center gap-1 text-sm text-cyan-400 hover:underline"

frontend/src/pages/ThreatActorDetailPage.tsx

@@ -1,6 +1,7 @@
 import { useState } from "react";
 import { useParams, useNavigate } from "react-router-dom";
 import MarkdownText from "../components/MarkdownText";
+import { safeUrl } from "../utils/url";
 import MotivationBadge from "../components/MotivationBadge";
 import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
 import {
@@ -258,7 +259,7 @@ export default function ThreatActorDetailPage() {
             )}
             {actor.mitre_url && (
               <a
-                href={actor.mitre_url}
+                href={safeUrl(actor.mitre_url)}
                 target="_blank"
                 rel="noreferrer"
                 className="flex items-center gap-1.5 rounded-lg border border-gray-700 bg-gray-800 px-3 py-2 text-xs text-gray-400 hover:text-white transition-colors"
@@ -605,7 +606,7 @@ export default function ThreatActorDetailPage() {
               <li key={i} className="text-xs">
                 {ref.url ? (
                   <a
-                    href={ref.url}
+                    href={safeUrl(ref.url)}
                     target="_blank"
                     rel="noreferrer"
                     className="text-cyan-400 hover:text-cyan-300 hover:underline"

frontend/src/utils/url.ts

@@ -0,0 +1,10 @@
+const SAFE_SCHEMES = new Set(["http:", "https:", "mailto:", "tel:"]);
+
+export function safeUrl(url: string | null | undefined): string {
+  if (!url) return "#";
+  try {
+    return SAFE_SCHEMES.has(new URL(url).protocol) ? url : "#";
+  } catch {
+    return "#";
+  }
+}

scripts/create_wiki.py

@@ -2,6 +2,7 @@
 """Create all Aegis wiki pages via Gitea API."""
 
 import base64
+import os
 import sys
 import time
 
@@ -14,11 +15,11 @@ from requests.auth import HTTPBasicAuth
 #   POST   /api/v1/repos/{owner}/{repo}/wiki/new              → create
 #   PATCH  /api/v1/repos/{owner}/{repo}/wiki/page/{pageName}  → update
 #   GET    /api/v1/repos/{owner}/{repo}/wiki/pages             → list
-GITEA_URL = "http://192.168.1.107:3000"
+GITEA_URL = os.environ.get("GITEA_URL", "http://192.168.1.107:3000")
-OWNER = "kitos"
+OWNER = os.environ.get("GITEA_OWNER", "kitos")
-REPO = "Aegis"
+REPO = os.environ.get("GITEA_REPO", "Aegis")
-USERNAME = "kitos"
+USERNAME = os.environ.get("GITEA_USERNAME", "kitos")
-PASSWORD = "T'2JY%HLX\"Bp^6e"
+PASSWORD = os.environ.get("GITEA_PASSWORD", "")
 
 
 def create_or_update_page(title: str, content: str) -> bool:

scripts/verify_gaps.py

@@ -4,9 +4,11 @@ Verify Phase 13 gap fixes:
 2. evaluate_all_rules creates in-app notifications for admins
 3. webhook dispatch_webhook_targeted exists and is callable
 """
+import os
 import requests, sys
 
-BASE = "http://localhost:8000/api/v1"
+BASE = os.environ.get("AEGIS_BASE_URL", "http://localhost:8000/api/v1")
+ADMIN_PASSWORD = os.environ.get("AEGIS_ADMIN_PASSWORD", "admin123")
 PASS = "\033[92m✓\033[0m"
 FAIL = "\033[91m✗\033[0m"
 passed = 0
@@ -51,7 +53,7 @@ def main():
     # ── Gap 2: in-app notifications dispatched ────────────────────────────────
     print("── Gap 2: In-app notifications on alert fire ──")
     tok = requests.post(f"{BASE}/auth/login",
-                        data={"username": "administrator", "password": "admin123"})
+                        data={"username": "administrator", "password": ADMIN_PASSWORD})
     if tok.status_code != 200:
         print(f"  Login failed: {tok.text}"); sys.exit(1)
     h = {"Authorization": f"Bearer {tok.json().get('access_token')}"}