Security Fix: Add timeout parameters to HTTP requests

This fix addresses a critical security vulnerability where HTTP requests
could hang indefinitely, potentially causing denial of service.

Changes:
- Added 10-second timeout to version check API call
- Added 10-second timeout to GitHub pull request API call
- Added 30-second timeout to data file downloads (larger timeout for data)
- Added 10-second timeout to exclusions list download

Impact:
- Prevents infinite hangs that could freeze the application
- Improves user experience with predictable response times
- Fixes security issue flagged by Bandit static analysis (B113)
- Makes the application more robust in poor network conditions

The timeouts are conservative enough to work with slow connections
while preventing indefinite blocking that could be exploited.

sherlock_project/sherlock.py

@@ -742,7 +742,7 @@ def main():
 
     # Check for newer version of Sherlock. If it exists, let the user know about it
     try:
-        latest_release_raw = requests.get(forge_api_latest_release).text
+        latest_release_raw = requests.get(forge_api_latest_release, timeout=10).text
         latest_release_json = json_loads(latest_release_raw)
         latest_remote_tag = latest_release_json["tag_name"]
 
@@ -802,7 +802,7 @@ def main():
                 if args.json_file.isnumeric():
                     pull_number = args.json_file
                     pull_url = f"https://api.github.com/repos/sherlock-project/sherlock/pulls/{pull_number}"
-                    pull_request_raw = requests.get(pull_url).text
+                    pull_request_raw = requests.get(pull_url, timeout=10).text
                     pull_request_json = json_loads(pull_request_raw)
 
                     # Check if it's a valid pull request

sherlock_project/sites.py

@@ -129,7 +129,7 @@ class SitesInformation:
         if data_file_path.lower().startswith("http"):
             # Reference is to a URL.
             try:
-                response = requests.get(url=data_file_path)
+                response = requests.get(url=data_file_path, timeout=30)
             except Exception as error:
                 raise FileNotFoundError(
                     f"Problem while attempting to access data file URL '{data_file_path}':  {error}"
@@ -166,7 +166,7 @@ class SitesInformation:
 
         if honor_exclusions:
             try:
-                response = requests.get(url=EXCLUSIONS_URL)
+                response = requests.get(url=EXCLUSIONS_URL, timeout=10)
                 if response.status_code == 200:
                     exclusions = response.text.splitlines()
                     exclusions = [exclusion.strip() for exclusion in exclusions]