Debian: DSA-5281-1 Urgent Nginx Denial of Service Vulnerability Alert

It was discovered that parsing errors in the mp4 module of Nginx, a
high-performance web and reverse proxy server, could result in denial
of service, memory disclosure or potentially the execution of arbitrary
code when processing a malformed mp4 file.

This module is only enabled in the nginx-extras binary package.

For the stable distribution (bullseye), these problems have been fixed in
version 1.18.0-6.1+deb11u3.

We recommend that you upgrade your nginx packages.

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

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/