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

Synopsis:          Moderate: spice-vdagent security and bug fix update
Advisory ID:       RHSA-2021:1791-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:1791
Issue date:        2021-05-18
CVE Names:         CVE-2020-25650 CVE-2020-25651 CVE-2020-25652 
                   CVE-2020-25653 
=====================================================================

1. Summary:

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

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

The spice-vdagent packages provide a SPICE agent for Linux guests.

Security Fix(es):

* spice-vdagent: possible file transfer DoS and information leak via
active_xfers hash map (CVE-2020-25651)

* spice-vdagent: UNIX domain socket peer PID retrieved via SO_PEERCRED is
subject to race condition (CVE-2020-25653)

* spice-vdagent: memory DoS via arbitrary entries in active_xfers hash
table (CVE-2020-25650)

* spice-vdagent: possibility to exhaust file descriptors in vdagentd
(CVE-2020-25652)

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

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

1790904 - [wayland] Multiple displays: mouse coordinates taken from the other
 display
1824610 - [wayland] 3. and 4. spice display does not react to mouse interaction
1886345 - CVE-2020-25650 spice-vdagent: memory DoS via arbitrary entries in
 active_xfers hash table
1886359 - CVE-2020-25651 spice-vdagent: possible file transfer DoS and
 information leak via active_xfers hash map
1886366 - CVE-2020-25652 spice-vdagent: possibility to exhaust file descriptors
 in vdagentd
1886372 - CVE-2020-25653 spice-vdagent: UNIX domain socket peer PID retrieved
 via SO_PEERCRED is subject to race condition

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
spice-vdagent-0.20.0-3.el8.src.rpm

aarch64:
spice-vdagent-0.20.0-3.el8.aarch64.rpm
spice-vdagent-debuginfo-0.20.0-3.el8.aarch64.rpm
spice-vdagent-debugsource-0.20.0-3.el8.aarch64.rpm

ppc64le:
spice-vdagent-0.20.0-3.el8.ppc64le.rpm
spice-vdagent-debuginfo-0.20.0-3.el8.ppc64le.rpm
spice-vdagent-debugsource-0.20.0-3.el8.ppc64le.rpm

s390x:
spice-vdagent-0.20.0-3.el8.s390x.rpm
spice-vdagent-debuginfo-0.20.0-3.el8.s390x.rpm
spice-vdagent-debugsource-0.20.0-3.el8.s390x.rpm

x86_64:
spice-vdagent-0.20.0-3.el8.x86_64.rpm
spice-vdagent-debuginfo-0.20.0-3.el8.x86_64.rpm
spice-vdagent-debugsource-0.20.0-3.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-2020-25650
https://access.redhat.com/security/cve/CVE-2020-25651
https://access.redhat.com/security/cve/CVE-2020-25652
https://access.redhat.com/security/cve/CVE-2020-25653
https://access.redhat.com/security/updates/classification/#moderate
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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