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====================================================================                   
Red Hat Security Advisory

Synopsis:          Low: spice security update
Advisory ID:       RHSA-2021:1924-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:1924
Issue date:        2021-05-18
CVE Names:         CVE-2021-20201
====================================================================
1. Summary:

An update for spice is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact
of Low. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat CodeReady Linux Builder (v. 8) - aarch64, x86_64
Red Hat Enterprise Linux AppStream (v. 8) - aarch64, x86_64

3. Description:

The Simple Protocol for Independent Computing Environments (SPICE) is a
remote display system built for virtual environments which allows the user
to view a computing 'desktop' environment not only on the machine where it
is running, but from anywhere on the Internet and from a wide variety of
machine architectures.

Security Fix(es):

* spice: Client initiated renegotiation denial of service (CVE-2021-20201)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat
Enterprise Linux 8.4 Release Notes linked from the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

All applications using SPICE (most notably all QEMU-KVM instances using the
SPICE console) must be restarted for this update to take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1904459 - CVE-2021-20201 spice: OpenSSL(TLS/SSL) Security DoS Vulnerability - enables client-initiated renegotiation [rhel-8]
1921846 - CVE-2021-20201 spice: Client initiated renegotiation denial of service

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
spice-0.14.3-4.el8.src.rpm

aarch64:
spice-debugsource-0.14.3-4.el8.aarch64.rpm
spice-server-0.14.3-4.el8.aarch64.rpm
spice-server-debuginfo-0.14.3-4.el8.aarch64.rpm

x86_64:
spice-debugsource-0.14.3-4.el8.i686.rpm
spice-debugsource-0.14.3-4.el8.x86_64.rpm
spice-server-0.14.3-4.el8.i686.rpm
spice-server-0.14.3-4.el8.x86_64.rpm
spice-server-debuginfo-0.14.3-4.el8.i686.rpm
spice-server-debuginfo-0.14.3-4.el8.x86_64.rpm

Red Hat CodeReady Linux Builder (v. 8):

aarch64:
spice-debugsource-0.14.3-4.el8.aarch64.rpm
spice-server-debuginfo-0.14.3-4.el8.aarch64.rpm
spice-server-devel-0.14.3-4.el8.aarch64.rpm

x86_64:
spice-debugsource-0.14.3-4.el8.i686.rpm
spice-debugsource-0.14.3-4.el8.x86_64.rpm
spice-server-debuginfo-0.14.3-4.el8.i686.rpm
spice-server-debuginfo-0.14.3-4.el8.x86_64.rpm
spice-server-devel-0.14.3-4.el8.i686.rpm
spice-server-devel-0.14.3-4.el8.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2021-20201
https://access.redhat.com/security/updates/classification/#low
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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