69517 : NetBSD sys/netinet6/udp6_output.c udp6_output() UDP6 Datagram Packet DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
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Timeline

Disclosure Date
2010-07-15

Description

NetBSD's sys/netinet6/udp6_output.c udp6_output() function contains a flaw that may allow a local denial of service. The issue is triggered when bad parameters are passed to the "opt" variable that is used to store IPv6 packet options. This can result in udp6_output() releasing the options without creating them first and leading to an uninitialized pointer access, which may result in loss of availability for the platform.

Classification

Location: Local Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Workaround, Upgrade
Exploit: Exploit Private
Disclosure: Vendor Verified

Solution

Upgrade to version 5.1 or higher, as it has been reported to fix this vulnerability. In addition, NetBSD has released patched branches for some older versions.

Products

NetBSD Foundation, Inc.	NetBSD	current (prior to 07/15/2010)
		5.0.x
		5.0
		4.0.x
		4.0

References

SCIP VulDB ID: 4232
Secunia Advisory ID: 42421
Bugtraq ID: 45086
Generic Informational URL: http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/netinet6/udp6_output.c?only_with_tag=MAIN
Other Advisory URL: http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2010-013.txt.asc
Vendor URL: http://www.netbsd.org/

Credit

Clément Lecigne

CVSSv2 Score

NVD does not currently have a CVSSv2 score assigned.

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