IETF Logo Mail Archive

Re: [quicwg/base-drafts] Required state for retaining unacked RETIRE_CONNECTION_ID frames is unbound (#3509)

Kazuho Oku <notifications@github.com> Thu, 12 March 2020 02:47 UTC

Return-Path: <noreply@github.com>
X-Original-To: quic-issues@ietfa.amsl.com
Delivered-To: quic-issues@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7FECC3A073D for <quic-issues@ietfa.amsl.com>; Wed, 11 Mar 2020 19:47:28 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.554
X-Spam-Level:
X-Spam-Status: No, score=-1.554 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_IMAGE_ONLY_20=1.546, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=github.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PDx7fsYzDwbn for <quic-issues@ietfa.amsl.com>; Wed, 11 Mar 2020 19:47:26 -0700 (PDT)
Received: from out-27.smtp.github.com (out-27.smtp.github.com [192.30.252.210]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AB9A63A07E7 for <quic-issues@ietf.org>; Wed, 11 Mar 2020 19:47:25 -0700 (PDT)
Date: Wed, 11 Mar 2020 19:47:24 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1583981244; bh=VRxuvTxspgebJ1g/qRiVhR4n0QYXBSQs595ZMrm/sEo=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=UZ/6WRmy3NPOW4jmUx9PHyV/1Qko0P/uwoM39h3tri93kFfYXJcFC1UnUunwq7nXk 6UsNLbNKfVL/a7J16MWa0rjJ4iXWnEcJ8ORaEPlAAOK7I0VG/PvhrheBU8V85BUkEH EoTI8WedD4os8qll+ir3s4oQi+CbuzGx6hPHvsqs=
From: Kazuho Oku <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJK3P5R2JEARUFFF5D3N4OWB3ZEVBNHHCFAMG5E@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/issues/3509/597978952@github.com>
In-Reply-To: <quicwg/base-drafts/issues/3509@github.com>
References: <quicwg/base-drafts/issues/3509@github.com>
Subject: Re: [quicwg/base-drafts] Required state for retaining unacked RETIRE_CONNECTION_ID frames is unbound (#3509)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5e69a2bc6574b_75073fddfa4cd96c93974"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: kazuho
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
X-GitHub-Recipient-Address: quic-issues@ietf.org
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/aY33B6LaKQNsO8v67d7I4yF0lIw>
X-BeenThere: quic-issues@ietf.org
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <quic-issues.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic-issues/>
List-Post: <mailto:quic-issues@ietf.org>
List-Help: <mailto:quic-issues-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 12 Mar 2020 02:47:29 -0000

@erickinnear Yes, I think your problem statement is correct.

Or to be even more concise, the problem is that the issuer of CIDs is given additional credit when it receives RCID, which happens before the consumer of CIDs drops the state it needs to retain for retransmitting RCID.

For the attack to work, an attacker has to let the peer consume and retire CIDs. RPT and intentional migration are examples that makes that happen.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/quicwg/base-drafts/issues/3509#issuecomment-597978952

v2.23.0 | Report a Bug | By Email