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Red Hat: RHSA-2023-0664-01 Important: Tigervnc Privilege Elevation

red hat
Calendar Grey February 8, 2023
Dist Redhat Esm H88
Keep abreast of essential updates via this Red Hat notice regarding the significant tigervnc vulnerability patch, emphasizing the CVE-2023-0494 threat.
An update for tigervnc is now available for Red Hat Enterprise Linux 8.4 Extended Update Support

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

Summary

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: DeepCopyPointerClasses use-after-free leads to privilege elevation (CVE-2023-0494)
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.

Topics%20covered

Topics Covered

security advisory important red hat enterprise linux remote display tigervnc privilege elevation

References

https://access.redhat.com/security/cve/CVE-2023-0494 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream EUS (v.8.4):
Source: tigervnc-1.11.0-8.el8_4.1.src.rpm
aarch64: tigervnc-1.11.0-8.el8_4.1.aarch64.rpm tigervnc-debuginfo-1.11.0-8.el8_4.1.aarch64.rpm tigervnc-debugsource-1.11.0-8.el8_4.1.aarch64.rpm tigervnc-server-1.11.0-8.el8_4.1.aarch64.rpm tigervnc-server-debuginfo-1.11.0-8.el8_4.1.aarch64.rpm tigervnc-server-minimal-1.11.0-8.el8_4.1.aarch64.rpm tigervnc-server-minimal-debuginfo-1.11.0-8.el8_4.1.aarch64.rpm tigervnc-server-module-1.11.0-8.el8_4.1.aarch64.rpm tigervnc-server-module-debuginfo-1.11.0-8.el8_4.1.aarch64.rpm
noarch: tigervnc-icons-1.11.0-8.el8_4.1.noarch.rpm tigervnc-license-1.11.0-8.el8_4.1.noarch.rpm tigervnc-selinux-1.11.0-8.el8_4.1.noarch.rpm
ppc64le: tigervnc-1.11.0-8.el8_4.1.ppc64le.rpm tigervnc-debuginfo-1.11.0-8.el8_4.1.ppc64le.rpm tigervnc-debugsource-1.11.0-8.el8_4.1.ppc64le.rpm tigervnc-server-1.11.0-8.el8_4.1.ppc64le.rpm tigervnc-server-debuginfo-1.11.0-8.el8_4.1.ppc64le.rpm tigervnc-server-minimal-1.11.0-8.el8_4.1.ppc64le.rpm tigervnc-server-minimal-debuginfo-1.11.0-8.el8_4.1.ppc64le.rpm tigervnc-server-module-1.11.0-8.el8_4.1.ppc64le.rpm tigervnc-server-module-debuginfo-1.11.0-8.el8_4.1.ppc64le.rpm
s390x: tigervnc-1.11.0-8.el8_4.1.s390x.rpm tigervnc-debuginfo-1.11.0-8.el8_4.1.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:0664-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0664
Issue date: 2023-02-08

Topic

An update for tigervnc is now available for Red Hat Enterprise Linux 8.4Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory important red hat enterprise linux remote display tigervnc privilege elevation

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream EUS (v.8.4) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2165995 - CVE-2023-0494 xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation

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