CVE-2003-1230

MediumCVSS 6.4/10Last modified Jun 16, 2026

Description

The implementation of SYN cookies (syncookies) in FreeBSD 4.5 through 5.0-RELEASE-p3 uses only 32-bit internal keys when generating syncookies, which makes it easier for remote attackers to conduct brute force ISN guessing attacks and spoof legitimate traffic.

Metrics

CVSS 2.0 6.4/10AV:N/AC:L/Au:N/C:P/I:P/A:N

Affected software

No affected versions have been published.

Timeline

Published
Dec 31, 2003
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2003-1230: Medium severity, CVSS 6.4 | Vulnix