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FreeBSD Security Advisory (FreeBSD-SA-08:09.icmp6.asc)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update to the system as announced in the referenced advisory FreeBSD-SA-08:09.icmp6.asc
Insight
Insight
IPv6 nodes use ICMPv6 amongst other things to report errors encountered while processing packets. The 'Packet Too Big Message' is sent in case a node cannot forward a packet because the size of the packet is larger than the MTU of next-hop link. In case of an incoming ICMPv6 'Packet Too Big Message', there is an insufficient check on the proposed new MTU for a path to the destination.
Solution
Solution
Upgrade your system to the appropriate stable release or security branch dated after the correction date https://secure1.securityspace.com/smysecure/catid.html?in=FreeBSD-SA-08:09.icmp6.asc