Handling of Overlapping IPv6 Fragments
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From: The IESG <email@example.com> To: IETF-Announce <firstname.lastname@example.org> Cc: Internet Architecture Board <email@example.com>, RFC Editor <firstname.lastname@example.org>, 6man mailing list <email@example.com>, 6man chair <firstname.lastname@example.org> Subject: Protocol Action: 'Handling of overlapping IPv6 fragments' to Proposed Standard The IESG has approved the following document: - 'Handling of overlapping IPv6 fragments ' <draft-ietf-6man-overlap-fragment-03.txt> as a Proposed Standard This document is the product of the IPv6 Maintenance Working Group. The IESG contact persons are Jari Arkko and Ralph Droms. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-6man-overlap-fragment-03.txt
Technical Summary The fragmentation and reassembly algorithm specified in the base IPv6 specification allows fragments to overlap. This document demonstrates the security issues with allowing overlapping fragments and updates the IPv6 specification to explicitly forbid overlapping fragments. Working Group Summary The 6MAN working group has done extensive review of this document and it represents the strong consensus of the group. Document Quality This document has been reviewed by key members of the 6MAN working group and the chairs. Personnel Document Shepherd is Brian Haberman and the responsible Area Director is Jari Arkko. RFC Editor Note Please move references RFC 1858 and RFC 4942 to the informative references section. Please add the following text to the end of Section 4: Nodes MAY also provide mechanisms to track the reception of such packets, for instance, by implementing counters or alarms relating to these events. Please change the title of Section 4 to "Node Behavior" Please change the last sentence of Section 1 as follows: OLD: This document explores the issues that can be caused by overlapping fragments. NEW: This document explores the issues that can be caused by overlapping fragments and updates the IPv6 specification to explicitly forbid overlapping fragments.