T09 · Insecure Skill Coding Practices
- Location
scripts/local_record.py:31- Finding
Arbitrary API Endpoint Can Receive Device Access Credentials
- Content
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Vulnerability Details
File Location:
scripts/local_record.py:31-32,scripts/local_record.py:38-47, andscripts/local_record.py:129-145
Vulnerability Type: Unvalidated network destination for sensitive credentials
Risk Level: MediumVulnerable Code
python # API base address, configurable through an environment variable JF_ENDPOINT = os.getenv("JF_ENDPOINT", "api-cn.jftechws.com") JF_BASE_URL = f"https://{JF_ENDPOINT}/gwp/v3" def get_headers(uuid: str, app_key: str, app_secret: str, move_card: int) -> Dict[str, str]: time_millis = get_time_millis() signature = generate_signature( uuid, app_key, app_secret, time_millis, move_card ) return { "Content-Type": "application/json; charset=UTF-8", "uuid": uuid, "appKey": app_key, "timeMillis": time_millis, "signature": signature, "X-Request-Id": os.urandom(16).hex() } url = f"{JF_BASE_URL}/rtc/device/playbackUrl/{device_token}" headers = get_headers(uuid, app_key, app_secret, move_card) body = { "channel": channel, "streamType": stream_type, "protocol": protocol, "startTime": start_time, "endTime": end_time, "fileName": file_name, "username": username, "password": password, "download": download, "playPrioritize": play_prioritize } response = requests.post( url, headers=headers, json=body, timeout=30 )Technical Analysis
The destination hostname is taken directly from the
JF_ENDPOINTenvironment variable and interpolated into the HTTPS base URL without validation or restriction to documented JFTech domains.All API operations place the device access token in the URL path. Requests also disclose the user UUID, application key, timestamp, and a signature derived from the application secret. Playback and download requests additionally transmit the device u ...[truncated 2074 chars]
- Remediation
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Remediation Suggestions
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Replace the arbitrary hostname setting with a fixed region selector and map each accepted region to a trusted endpoint:
python TRUSTED_ENDPOINTS = { "CN": "api-cn.jftechws.com", "AS": "api-as.jftechws.com", "EU": "api-eu.jftechws.com", "NA": "api-na.jftechws.com", } region = os.getenv("JF_REGION", "CN").upper() if region not in TRUSTED_ENDPOINTS: raise ValueError("Unsupported JFTech API region") JF_BASE_URL = ( f"https://{TRUSTED_ENDPOINTS[region]}/gwp/v3" ) -
If direct endpoint configuration must remain available, parse it strictly and require an exact hostname match against the documented allowlist. Reject user information, ports, paths, query strings, fragments, IP addresses, and deceptive suffixes.
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Do not use substring or suffix-only checks such as
endswith("jftechws.com"); require exact equality with an approved hostname. -
Avoid supplying secrets through command-line arguments because they may be exposed in shell history or process listings. Prefer protected environment injection or an operating-system secret manager.
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Redact device tokens, signatures, passwords, and generated media URLs from logs and exception telemetry.
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If supported by the upstream API, move access tokens out of URL paths and into authorization headers to reduce exposure through URL logging.
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Rotate the device token and password after any suspected endpoint manipulation or credential disclosure.
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