bug#47674: closed (dnsmasq is vulnerable to CVE-2021-3448)

[GNU bug Tracking System]

Your message dated Fri, 9 Apr 2021 15:34:34 -0400
with message-id <YHCsSh9+7Uqdq0VU@jasmine.lan>
and subject line Re: bug#47674: dnsmasq is vulnerable to CVE-2021-3448
has caused the debbugs.gnu.org bug report #47674,
regarding dnsmasq is vulnerable to CVE-2021-3448
to be marked as done.

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47674: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=47674
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--- Begin Message --- Subject: dnsmasq is vulnerable to CVE-2021-3448 Date: Fri, 09 Apr 2021 17:10:43 +0200

CVE-2021-3448

A flaw was found in dnsmasq in versions before 2.85. When configured to
use a specific server for a given network interface, dnsmasq uses a
fixed port while forwarding queries. An attacker on the network, able to
find the outgoing port used by dnsmasq, only needs to guess the random
transmission ID to forge a reply and get it accepted by dnsmasq. This
flaw makes a DNS Cache Poisoning attack much easier. The highest threat
from this vulnerability is to data integrity.

guix ships dnsmasq@2.84. guix refresh shows version 2.85 is available,
and there are 43 dependent packages so this can go directly to master.

All dependent packages (refresh -l) build fine except for
python2-libvirt@7.2.0, which is failing also on master
(libvirt-python requires Python >= 3.5 to build).  Since it's a python2
package and no other packages depends on it, can we just drop it?

Thanks, Nicolò

0001-gnu-dnsmasq-Update-to-2.85.patch
Description: Text Data

--- End Message ---

> --- Begin Message ---
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>
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> Subject: 
>
> Re: bug#47674: dnsmasq is vulnerable to CVE-2021-3448
>
>
>
>
> Date: 
>
> Fri, 9 Apr 2021 15:34:34 -0400
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>
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>
> On Fri, Apr 09, 2021 at 05:10:43PM +0200, Nicolò Balzarotti wrote:
> > From a0932442c6c72d1e1a2a0f400f8afa487251189d Mon Sep 17 00:00:00 2001
> > From: nixo <nicolo@nixo.xyz>
> > Date: Fri, 9 Apr 2021 16:19:03 +0200
> > Subject: [PATCH] gnu: dnsmasq: Update to 2.85.
> > 
> > * gnu/packages/dns.scm (dnsmasq): Update to 2.85.
>
> Looks like this change was already done with commit
> c8d809f9a49c2b4ec5500c2685e96168dcd9afa9
>
>
> --- End Message ---