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Message-ID: <CAPdG+L40W-nprsiRV_bw68HP-eJ9u6F=sfXS39UJgJAd2TkuNg@mail.gmail.com>
Date: Tue, 14 Aug 2018 17:09:38 -0400
From: "David T." <davidmthomsen@...il.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE-2018-5391: Linux kernel: IP fragments with
random offsets allow a remote denial of service (FragmentSmack)
Is this the same as "SegmentSmack" that came out last week, CVE-2018-5390?
Or, what is the difference?
On Tue, Aug 14, 2018 at 16:31 Vladis Dronov <vdronov@...hat.com> wrote:
> Heololo,
>
> A flaw named FragmentSmack was found in the way the Linux kernel handled
> reassembly of fragmented IPv4 and IPv6 packets. A remote attacker could
> use this flaw to trigger time and calculation expensive fragment reassembly
> algorithms by sending specially crafted packets which could lead to a CPU
> saturation and hence a denial of service on the system.
>
> External References:
>
> https://www.kb.cert.org/vuls/id/641765
>
> https://access.redhat.com/articles/3553061
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1609664
>
> Best regards,
> Vladis Dronov | Red Hat, Inc. | Product Security Engineer
>
--
Very respectfully,
David M Thomsen
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