Info

Disclosure

Mar 02, 2004

Discovery

Jan 22, 2004

Dates

Exploit

Unknown

Solution

Unknown

Description

FreeBSD and OpenBSD contain a flaw that may allow a remote denial of service. The issue is triggered when multiple out-of-sequence tcp packets are sent, and will result in loss of availability for the platform.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Rumored
Disclosure: OSVDB Verified

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, the FreeBSD Project and OpenBSD have released patches to address this vulnerability.

Products

FreeBSD Project	FreeBSD	4.8
		4.9
		5.2

OpenBSD	OpenBSD	3.3
		3.4

References

Secunia Advisory ID: 11023 11074 11697 12682
ISS X-Force ID: 15369
CVE ID: 2004-0171 (see also: NVD)
SCIP VulDB ID: 543
Bugtraq ID: 9792
Vendor Specific Advisory URL: ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:04.tcp.asc
Other Advisory URL: ftp://patches.sgi.com/support/free/security/advisories/20040905-01-P.asc http://www.idefense.com/application/poi/display?id=78&type=vulnerabilities&flashstatus=false
http://www.securitytracker.com/alerts/2004/Mar/1009276.html
Vendor URL: http://www.freebsd.org
http://www.openbsd.org
http://www.openbsd.org/errata33.html
http://www.openbsd.org/errata34.html

Credit

Alexander Cuttergo - iDefense

Direct URL: http://osvdb.org/4124