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Red Hat: RHSA-2023-0622-01 Critical: TigerVNC Privilege Elevation

red hat
Calendar Grey February 7, 2023
Dist Redhat Esm H88
Uncover the essential tigervnc security patch for Red Hat Enterprise Linux 9 and analyze its effects on remote graphical interfaces.
An update for tigervnc is now available for Red Hat Enterprise Linux 9

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 update 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 (v. 9):
Source: tigervnc-1.12.0-5.el9_1.1.src.rpm
aarch64: tigervnc-1.12.0-5.el9_1.1.aarch64.rpm tigervnc-debuginfo-1.12.0-5.el9_1.1.aarch64.rpm tigervnc-debugsource-1.12.0-5.el9_1.1.aarch64.rpm tigervnc-server-1.12.0-5.el9_1.1.aarch64.rpm tigervnc-server-debuginfo-1.12.0-5.el9_1.1.aarch64.rpm tigervnc-server-minimal-1.12.0-5.el9_1.1.aarch64.rpm tigervnc-server-minimal-debuginfo-1.12.0-5.el9_1.1.aarch64.rpm tigervnc-server-module-1.12.0-5.el9_1.1.aarch64.rpm tigervnc-server-module-debuginfo-1.12.0-5.el9_1.1.aarch64.rpm
noarch: tigervnc-icons-1.12.0-5.el9_1.1.noarch.rpm tigervnc-license-1.12.0-5.el9_1.1.noarch.rpm tigervnc-selinux-1.12.0-5.el9_1.1.noarch.rpm
ppc64le: tigervnc-1.12.0-5.el9_1.1.ppc64le.rpm tigervnc-debuginfo-1.12.0-5.el9_1.1.ppc64le.rpm tigervnc-debugsource-1.12.0-5.el9_1.1.ppc64le.rpm tigervnc-server-1.12.0-5.el9_1.1.ppc64le.rpm tigervnc-server-debuginfo-1.12.0-5.el9_1.1.ppc64le.rpm tigervnc-server-minimal-1.12.0-5.el9_1.1.ppc64le.rpm tigervnc-server-minimal-debuginfo-1.12.0-5.el9_1.1.ppc64le.rpm tigervnc-server-module-1.12.0-5.el9_1.1.ppc64le.rpm tigervnc-server-module-debuginfo-1.12.0-5.el9_1.1.ppc64le.rpm
s390x: tigervnc-1.12.0-5.el9_1.1.s390x.rpm tigervnc-debuginfo-1.12.0-5.el9_1.1.s390x.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:0622-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0622
Issue date: 2023-02-07

Topic

An update for tigervnc is now available for Red Hat Enterprise Linux 9.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 update remote display tigervnc privilege elevation

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 9) - 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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