Debian: DSA-5918-1 critical: Varnish request smuggling issue

Ben Kallus discovered that incorrect parsing of chunked transfer
encodings in the Varnish web accelerator may result in HTTP request
smuggling or cache poisoning.

For the stable distribution (bookworm), this problem has been fixed in
version 7.1.1-2+deb12u1.

We recommend that you upgrade your varnish packages.

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

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/