CVE-2004-2252: The firewall in Astaro Security Linux before 4.024 sends responses to SYN-FIN packets, which makes it easie...

Security readout for executives and security teams

Astaro Security Linux firewalls older than 4.024 may respond to unusual SYN-FIN network packets. That behavior can reveal information that helps a remote attacker profile the system and plan more tailored attacks. Exposure is limited to environments still running Astaro Security Linux before 4.024, especially if reachable from untrusted networks. The source bundle does not identify broader products or supported versions. Treat as low immediate urgency unless legacy Astaro Security Linux is present. If found on a perimeter path, prioritize upgrade or retirement because firewall fingerprinting can support targeted attack planning. Mitigation focus: Identify any Astaro Security Linux deployments and confirm version levels.; Upgrade systems older than 4.024 to a fixed or supported release.; If upgrade is not possible, isolate the firewall from untrusted probing where feasible..

Prepared

Jun 29, 2026, 19:05 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.