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Description of problem:
First reported here: https://gitlab.freedesktop.org/spice/spice/-/issues/49

When using TLS to secure the communication to the VM, SPICE is allowing client-initiated renegotiation of ciphers, which can be used to trigger a DoS attack on the host (see https://nvd.nist.gov/vuln/detail/CVE-2011-1473)


How reproducible:
Using the testssl.sh script (from https://testssl.sh/), you can check the vulnerability of a service.

Steps to Reproduce:
1. Setup secure connexion on a SPICE VM using TLS
2. Use testssl.sh to check for the vulnerability

Actual results:
testssl.sh reports the following:

Secure Client-Initiated Renegotiation     VULNERABLE (NOT ok), potential DoS threat

Expected results:

Secure Client-Initiated Renegotiation     likely not vulnerable (OK), timed out

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Low: spice security update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:1924