A prosody security update has been released for Debian GNU/Linux 10 and 11 to address a denial of service issue.

DSA 5047-1: prosody security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-5047-1 security@debian.org
  https://www.debian.org/security/ Moritz Muehlenhoff
January 15, 2022   https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : prosody
CVE ID : CVE-2022-0217

Matthew Wild discovered that the WebSockets code in Prosody, a
lightweight Jabber/XMPP server, was susceptible to denial of service.

For the oldstable distribution (buster), this problem has been fixed
in version 0.11.2-1+deb10u3.

For the stable distribution (bullseye), this problem has been fixed in
version 0.11.9-2+deb11u1.

We recommend that you upgrade your prosody packages.

For the detailed security status of prosody please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/prosody

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/