CVE-2005-2317: Shorewall

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

Shorewall 2.4.x before 2.4.1, 2.2.x before 2.2.5, and 2.0.x before 2.0.17, when MACLIST_TTL is greater than 0 or MACLIST_DISPOSITION is set to ACCEPT, allows remote attackers with an accepted MAC address to bypass other firewall rules or policies.

Affected products

• Shorewall Shorewall: version 2.0.0 only; version 2.0.0a only; version 2.0.0b only; version 2.0.1 only; version 2.0.2 only; version 2.0.2a only; …

Published 2005-07-19. Last modified 2026-06-16.