CVE-2002-0518

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Summary

CVECVE-2002-0518
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2002-08-12 04:00:00 UTC
Updated2025-04-03 01:03:51 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 5 from [email protected]

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

Problem Types: NVD-CWE-Other | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Freebsd Freebsd 4.5 release All All
Operating System Freebsd Freebsd 4.5 stable All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
www.osvdb.org/6046 af854a3a-2127-422b-91ae-364da2661108 www.osvdb.org
ISS X-Force Database: bsd-syncookie-pointer-dos (8873): FreeBSD syncookie "NULL" pointer denial of service af854a3a-2127-422b-91ae-364da2661108 www.iss.net
FreeBSD 4.5 syncache / syncookies Denial Of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Patch, Vendor Advisory
ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:20.syncache.asc af854a3a-2127-422b-91ae-364da2661108 ftp.freebsd.org
ISS X-Force Database: bsd-syncache-inpcb-dos (8875): FreeBSD syncache "inpcb" pointer denial of service af854a3a-2127-422b-91ae-364da2661108 www.iss.net Patch, Vendor Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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