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

Synopsis:          Important: tigervnc security update
Advisory ID:       RHSA-2023:1549-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2023:1549
Issue date:        2023-04-03
CVE Names:         CVE-2023-1393 
=====================================================================

1. Summary:

An update for tigervnc is now available for Red Hat Enterprise Linux 8.2
Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications
Update Service, and Red Hat Enterprise Linux 8.2 Update Services for SAP
Solutions.

Red Hat Product Security has rated this update as having a security impact
of Important. 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 AUS (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64
Red Hat Enterprise Linux AppStream E4S (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64
Red Hat Enterprise Linux AppStream TUS (v. 8.2) - aarch64, noarch, ppc64le, s390x, x86_64

3. Description:

Virtual Network Computing (VNC) is a remote display system which allows
users 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. TigerVNC is a suite of VNC servers and clients.

Security Fix(es):

* xorg-x11-server: X.Org Server Overlay Window Use-After-Free Local
Privilege Escalation Vulnerability (CVE-2023-1393)

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.

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/):

2180288 - CVE-2023-1393 xorg-x11-server: X.Org Server Overlay Window Use-After-Free Local Privilege Escalation Vulnerability

6. Package List:

Red Hat Enterprise Linux AppStream AUS (v. 8.2):

Source:
tigervnc-1.9.0-15.el8_2.3.src.rpm

aarch64:
tigervnc-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm

noarch:
tigervnc-icons-1.9.0-15.el8_2.3.noarch.rpm
tigervnc-license-1.9.0-15.el8_2.3.noarch.rpm
tigervnc-server-applet-1.9.0-15.el8_2.3.noarch.rpm

ppc64le:
tigervnc-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm

s390x:
tigervnc-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.s390x.rpm

x86_64:
tigervnc-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm

Red Hat Enterprise Linux AppStream E4S (v. 8.2):

Source:
tigervnc-1.9.0-15.el8_2.3.src.rpm

aarch64:
tigervnc-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm

noarch:
tigervnc-icons-1.9.0-15.el8_2.3.noarch.rpm
tigervnc-license-1.9.0-15.el8_2.3.noarch.rpm
tigervnc-server-applet-1.9.0-15.el8_2.3.noarch.rpm

ppc64le:
tigervnc-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm

s390x:
tigervnc-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.s390x.rpm

x86_64:
tigervnc-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm

Red Hat Enterprise Linux AppStream TUS (v. 8.2):

Source:
tigervnc-1.9.0-15.el8_2.3.src.rpm

aarch64:
tigervnc-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.aarch64.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.aarch64.rpm

noarch:
tigervnc-icons-1.9.0-15.el8_2.3.noarch.rpm
tigervnc-license-1.9.0-15.el8_2.3.noarch.rpm
tigervnc-server-applet-1.9.0-15.el8_2.3.noarch.rpm

ppc64le:
tigervnc-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.ppc64le.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.ppc64le.rpm

s390x:
tigervnc-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.s390x.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.s390x.rpm

x86_64:
tigervnc-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-debugsource-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-minimal-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-minimal-debuginfo-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-module-1.9.0-15.el8_2.3.x86_64.rpm
tigervnc-server-module-debuginfo-1.9.0-15.el8_2.3.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-2023-1393
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2023 Red Hat, Inc.
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