The SYN cache (syncache) and SYN cookie (syncookie) mechanism in FreeBSD 4.5 and earlier allows remote attackers to cause a denial of service (crash) (1) via a SYN packet that is accepted using syncookies that causes a null pointer to be referenced for the socket's TCP options, or (2) by killing and restarting a process that listens on the same socket, which does not properly clear the old inpcb pointer on restart.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-08T02:49:28.879Z

Reserved: 2002-06-07T00:00:00

Link: CVE-2002-0518

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2002-08-12T04:00:00.000

Modified: 2025-04-03T01:03:51.193

Link: CVE-2002-0518

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.