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PSA: update your DNS resolvers (PiHole, unbound, Bind9, dsnmasq) to patch DNSSEC vulnerability (lemmy.blackeco.com)

submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/[email protected]

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Researchers recently found a vulnerability in the way DNS resolvers handle DNSSEC validation that allow attackers to DoS resolvers with a single DNS request

https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/

It is highly recommended to upgrade your resolvers to the following versions:

unbound: 1.91.1
PiHole: FTL 5.25 or Docker 2024.02.0
Bind9: 9.19.17
dnsmasq: 2.90
and probably any other resolver you use

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[–] [email protected] 1 points 9 months ago* (last edited 9 months ago) (1 children)

I'm not familiar with off-the-shelf DNS filtering on mobile, but since running a DNS resolver on-device would be impractical, I think they must be using a DNS server that they maintain. Which means that unless I'm wrong, the vulnerability lies on their end, you should be fine.

[–] [email protected] 2 points 9 months ago (1 children)

I been using rethink dns but ik their are other for android at least. Works by making a local vpn magic.

[–] [email protected] 2 points 9 months ago

They maintain their own resolver, so they have to patch it if not done already.