vsftpd: implement 3-tier bruteforce detection with impossible travel #1568
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- Add service: ftp metadata to vsftpd-logs parser - Create vsftpd-success-logs parser for OK LOGIN authentications - Uses generic log_type: auth_success for impossible-travel compatibility 3-Tier Bruteforce Detection (following SSH/SMB pattern): - vsftpd-bf: fast attacks (5 failures in ~50s, 0-10s intervals) - vsftpd-slow-bf: slow attacks (10 failures in ~10min, 10-60s intervals) - vsftpd-time-based-bf: time-based attacks (3 failures, >2min median, >120s intervals) - Uses MedianInterval() helper with conditional type - Includes cancel_on for successful authentication (false positive reduction) - Filters both failed and successful auth events Collections: - Update vsftpd collection with both parsers and 3 scenarios - Create vsftpd-impossible-travel collection (parser + impossible-travel scenarios) Testing: - vsftpd-logs: regenerate with service metadata - vsftpd-bf: update to private IPs and regenerate assertions - vsftpd-slow-bf: new test with 16 events at 15s intervals - vsftpd-time-based-bf: new test with 6 events at 3-4min intervals - vsftpd-success-logs: new parser test with 3 successful authentications - vsftpd-impossible-travel: new test with AU/US IPs - All 6 tests passing Provides gap-free coverage against all attack speeds for the most popular FTP server.
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Description
3-Tier Bruteforce Detection (following SSH/SMB pattern):
Collections:
Testing:
Provides gap-free coverage against all attack speeds for the most popular FTP server.
Checklist