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Date: Tue, 13 Feb 2024 22:52:09 +0100
From: Solar Designer <solar@...nwall.com>
To: oss-security@...ts.openwall.com
Subject: Re: Unbound: disclosure of CVE-2023-50387 and CVE-2023-50868 DNSSEC validation vulnerabilities
On Tue, Feb 13, 2024 at 12:06:42PM -0800, Alan Coopersmith wrote:
> On 2/13/24 06:07, Yorgos Thessalonikefs wrote:
> >DNSSEC protocol vulnerabilities have been discovered that render various
> >DNSSEC validators victims of Denial Of Service while trying to validate
> >specially crafted DNSSEC responses.
> >
> >There are two known vulnerabilities: CVE-2023-50387 (referred here as
> >the KeyTrap vulnerability) and CVE-2023-50868 (referred here as the
> >NSEC3 vulnerability).
>
> Similarly, dnsmasq 2.90 was published today to address these:
> https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html
And fixes for these two CVEs were merged into PowerDNS today:
https://github.com/PowerDNS/pdns/pull/13781
I hope PowerDNS will also be sending a proper advisory in here.
Alexander
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