CVE-2003-0001: Freebsd

Medium severity, CVSS 5.0. EPSS: 70.2% chance of exploitation in the next 30 days.

Multiple ethernet Network Interface Card (NIC) device drivers do not pad frames with null bytes, which allows remote attackers to obtain information from previous packets or kernel memory by using malformed packets, as demonstrated by Etherleak.

Affected products

• Freebsd Freebsd: version 4.2 only; version 4.3 only; version 4.4 only; version 4.5 only; version 4.6 only; version 4.7 only
• Linux Linux Kernel: version 2.4.1 only; version 2.4.2 only; version 2.4.3 only; version 2.4.4 only; version 2.4.5 only; version 2.4.6 only; …
• Microsoft Windows 2000: any version
• Microsoft Windows 2000 Terminal Services: any version
• Netbsd Netbsd: version 1.5 only; version 1.5.1 only; version 1.5.2 only; version 1.5.3 only; version 1.6 only

Published 2003-01-17. Last modified 2026-06-16.