T05 · Unauthorized Access and Privilege Escalation
Error
- Location
scripts/idea_vault.py:569- Finding
Unrestricted Attachment Downloads Enable Server-Side Request Forgery
- Content
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None: ensure_dir(os.path.dirname(out_path)) headers = {"User-Agent": "Mozilla/5.0"} r = requests.get(url, headers=headers, timeout=60) r.raise_for_status() with open(out_path, "wb") as f: f.write(r.content) ``` The function is invoked with URLs originating from captured message attachments: ```python assets = capture.get("assets") or [] if assets: mm = dt.datetime.now(dt.timezone.utc).strftime("%m") assets_dir = os.path.join(vault_dir, "assets", year, mm) ensure_dir(assets_dir) for a in assets: url_a = a.get("url") if not url_a: continue fn = a.get("filename") or slugify(url_a.split("/")[-1]) out_path = os.path.join(assets_dir, fn) try: download_asset(url_a, out_path) assets_out.append({"url": url_a, "path": out_path, "filename": fn}) except Exception as e: assets_out.append({"url": url_a, "error": str(e), "filename": fn}) ``` ### Technical Analysis Attachment URLs extracted from chat input are passed directly to `requests.get`. The implementation does not restrict destination hosts, resolve and validate IP addresses, reject non-public networks, constrain redirects, or limit the downloaded response size. Although `requests` only supports particular URL schemes, an attacker can still supply an HTTP or HTTPS URL pointing to: - Loopback services such as `127.0.0.1` or `::1` - RFC1918 private networks - Link-local addresses and cloud metadata endpoints - Internal DNS names - Public endpoints that redirect to restricted destinations Redirects are followed by default. Consequently, validating only the ini ...[truncated 1562 chars]- Remediation
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