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Red Hat Security Advisory 2023-1549-01

Red Hat Security Advisory 2023-1549-01 - Virtual Network Computing 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. Issues addressed include privilege escalation and use-after-free vulnerabilities.

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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
=====================================================================

Summary:

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.

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

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.

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

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

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

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

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

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

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/

References:

https://access.redhat.com/security/cve/CVE-2023-1393
https://access.redhat.com/security/updates/classification/#important

Contact:

The Red Hat security contact is [email protected]. More contact
details at https://access.redhat.com/security/team/contact/

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