Unbound 1.21.1 released

[Petr Menšík]

Hi!

I have tried to update to this key. When searched for it on the same 
source as Wouter Wijngaards has link, it has found expired key only.

Perhaps could the GPG key be refreshed also on link

https://keys.openpgp.org/pks/lookup?op=get&search=948EB42322C5D00B79340F5DCFF3344D9087A490

?

It would be better, if the older Wouter's key signed 948E B423 22C5 D00B 
7934  0F5D CFF3 344D 9087 A490 key.

Would be all releases from now signed by this Yorgos key or is this 
exceptional case?

Regards,
Petr

On 03. 10. 24 18:00, Yorgos Thessalonikefs via Unbound-users wrote:
> Hi,
>
> Unbound 1.21.1 is available:
> https://nlnetlabs.nl/downloads/unbound/unbound-1.21.1.tar.gz
> sha256 3036d23c23622b36d3c87e943117bdec1ac8f819636eb978d806416b0fa9ea46
> pgp https://nlnetlabs.nl/downloads/unbound/unbound-1.21.1.tar.gz.asc
>
> ** This release is signed by yorgos at nlnetlabs.nl. Please find the 
> relevant key at https://nlnetlabs.nl/people/ **
>
> This security release fixes CVE-2024-8508.
>
> A vulnerability has been discovered in Unbound when handling replies
> with very large RRsets that Unbound needs to perform name compression
> for.
>
> Malicious upstreams responses with very large RRsets can cause Unbound
> to spend a considerable time applying name compression to downstream
> replies. This can lead to degraded performance and eventually denial of
> service in well orchestrated attacks.
>
> The vulnerability can be exploited by a malicious actor querying Unbound
> for the specially crafted contents of a malicious zone with very large
> RRsets.
> Before Unbound replies to the query it will try to apply name
> compression which was an unbounded operation that could lock the CPU
> until the whole packet was complete.
>
> Unbound version 1.21.1 introduces a hard limit on the number of name
> compression calculations it is willing to do per packet.
> Packets that need more compression will result in semi-compressed
> packets or truncated packets, even on TCP for huge messages, to avoid
> locking the CPU for long.
>
> This change should not affect normal DNS traffic.
>
> We would like to thank Toshifumi Sakaguchi for discovering and
> responsibly disclosing the vulnerability.
>
>
> Bug Fixes:
> - Fix CVE-2024-8508, unbounded name compression could lead to denial of
>   service.
>
> Best regards,
> -- Yorgos
>
-- 
Petr Menšík
Software Engineer, RHEL
Red Hat, http://www.redhat.com/
PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB