CVE-2002-0518

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.

CVSS v2.0 5.0 MEDIUM

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://www.securityfocus.com/bid/4524	Patch Vendor Advisory
http://www.iss.net/security_center/static/8875.php	Patch Vendor Advisory
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:20.syncache.asc
http://www.iss.net/security_center/static/8873.php
http://www.osvdb.org/6046

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:freebsd:freebsd:4.5:stable::::::
	cpe:2.3:o:freebsd:freebsd:4.5:release::::::

Information

Published : 2002-08-11 21:00

Updated : 2008-09-05 13:28

NVD link : CVE-2002-0518

Mitre link : CVE-2002-0518

JSON object : View

CWE

NVD-CWE-Other

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Products Affected

freebsd

freebsd

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