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RedHat 7 RHSA-2023-0045-01 Important: Tigervnc Denial Of Service

red hat
Calendar Grey January 9, 2023
Dist Redhat Esm H88
Crucial security patch released for tigervnc on Red Hat Enterprise Linux 7, focusing on significant vulnerabilities and reinforcing system dependability.
An update for tigervnc is now available for Red Hat Enterprise Linux 7

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: X.Org Server XkbGetKbdByName use-after-free (CVE-2022-4283)
* xorg-x11-server: X.Org Server XTestSwapFakeInput stack overflow (CVE-2022-46340)
* xorg-x11-server: X.Org Server XIPassiveUngrab out-of-bounds access (CVE-2022-46341)
* xorg-x11-server: X.Org Server XvdiSelectVideoNotify use-after-free (CVE-2022-46342)
* xorg-x11-server: X.Org Server ScreenSaverSetAttributes use-after-free (CVE-2022-46343)
* xorg-x11-server: X.Org Server XIChangeProperty out-of-bounds access (CVE-2022-46344)
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 denial of service Red Hat buffer overflow remote access important tigervnc

References

https://access.redhat.com/security/cve/CVE-2022-4283 https://access.redhat.com/security/cve/CVE-2022-46340 https://access.redhat.com/security/cve/CVE-2022-46341 https://access.redhat.com/security/cve/CVE-2022-46342 https://access.redhat.com/security/cve/CVE-2022-46343 https://access.redhat.com/security/cve/CVE-2022-46344 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: tigervnc-1.8.0-23.el7_9.src.rpm
noarch: tigervnc-icons-1.8.0-23.el7_9.noarch.rpm tigervnc-license-1.8.0-23.el7_9.noarch.rpm
x86_64: tigervnc-1.8.0-23.el7_9.x86_64.rpm tigervnc-debuginfo-1.8.0-23.el7_9.x86_64.rpm tigervnc-server-1.8.0-23.el7_9.x86_64.rpm tigervnc-server-minimal-1.8.0-23.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: tigervnc-server-applet-1.8.0-23.el7_9.noarch.rpm
x86_64: tigervnc-debuginfo-1.8.0-23.el7_9.x86_64.rpm tigervnc-server-module-1.8.0-23.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: tigervnc-1.8.0-23.el7_9.src.rpm
noarch: tigervnc-license-1.8.0-23.el7_9.noarch.rpm
x86_64: tigervnc-debuginfo-1.8.0-23.el7_9.x86_64.rpm tigervnc-server-minimal-1.8.0-23.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch: tigervnc-icons-1.8.0-23.el7_9.noarch.rpm tigervnc-server-applet-1.8.0-23.el7_9.noarch.rpm
x86_64: tigervnc-1.8.0-23.el7_9.x86_64.rpm tigervnc-debuginfo-1.8.0-23.el7_9.x86_64.rpm tigervnc-server-1.8.0-23.el7_9.x86_64.rpm tigervnc-server-module-1.8.0-23.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: tigervnc-1.8.0-23.el7_9.src.rpm
noarch: tigervnc-icons-1.8.0-23.el7_9.noarch.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2023:0045-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:0045
Issue date: 2023-01-09

Topic

An update for tigervnc is now available for Red Hat Enterprise Linux 7.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 denial of service Red Hat buffer overflow remote access important tigervnc

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

Bugs Fixed

2151755 - CVE-2022-46340 xorg-x11-server: X.Org Server XTestSwapFakeInput stack overflow

2151756 - CVE-2022-46341 xorg-x11-server: X.Org Server XIPassiveUngrab out-of-bounds access

2151757 - CVE-2022-46342 xorg-x11-server: X.Org Server XvdiSelectVideoNotify use-after-free

2151758 - CVE-2022-46343 xorg-x11-server: X.Org Server ScreenSaverSetAttributes use-after-free

2151760 - CVE-2022-46344 xorg-x11-server: X.Org Server XIChangeProperty out-of-bounds access

2151761 - CVE-2022-4283 xorg-x11-server: X.Org Server XkbGetKbdByName use-after-free

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