Red Hat Security Advisory 2021-1791-01 - The spice-vdagent packages provide a SPICE agent for Linux guests. Issues addressed include denial of service and information leakage vulnerabilities.
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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
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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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