CVE-2002-1221: Freebsd

Medium severity, CVSS 5.0. EPSS: 7.6% chance of exploitation in the next 30 days.

BIND 8.x through 8.3.3 allows remote attackers to cause a denial of service (crash) via SIG RR elements with invalid expiry times, which are removed from the internal BIND database and later cause a null dereference.

Affected products

• Freebsd Freebsd: version 4.4 only; version 4.5 only; version 4.6 only; version 4.7 only
• ISC BIND: version 8.1 only; version 8.1.1 only; version 8.1.2 only; version 8.2 only; version 8.2.1 only; version 8.2.2 only; …
• OpenBSD OpenBSD: version 3.0 only; version 3.1 only; version 3.2 only

Published 2002-11-29. Last modified 2026-06-16.