CVE-1999-0305

Medium CVSS 5

Published 1998-02-01 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-0305, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

The system configuration control (sysctl) facility in BSD based operating systems OpenBSD 2.2 and earlier, and FreeBSD 2.2.5 and earlier, does not properly restrict source routed packets even when the (1) dosourceroute or (2) forwarding variables are set, which allows remote attackers to spoof TCP connections.

Sources

NVD record for CVE-1999-0305

CVSS vector: AV:N/AC:L/Au:N/C:P/I:N/A:N