SYN Cookie Implementation Vulnerability in FreeBSD by The FreeBSD Project
CVE-2003-1230

Currently unrated

Key Information:

Vendor: The FreeBSD Project
Status: FreeBSD
Vendor: CVE Published:; 31 December 2003

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What is CVE-2003-1230?

The SYN cookie implementation in FreeBSD versions 4.5 to 5.0-RELEASE-p3 utilizes 32-bit internal keys for generating SYN cookies. This design flaw allows attackers to perform brute force ISN (Initial Sequence Number) guessing attacks, potentially enabling them to spoof legitimate traffic. The vulnerability compromises the integrity of network connections and can lead to unauthorized access or denial of service.

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