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Red Hat Security Advisory
Synopsis: Moderate: tigervnc security and bug fix update
Advisory ID: RHSA-2023:2257-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:2257
Issue date: 2023-05-09
CVE Names: CVE-2022-4283 CVE-2022-46340 CVE-2022-46341
CVE-2022-46342 CVE-2022-46343 CVE-2022-46344
=====================================================================
1. Summary:
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 impact
of Moderate. 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 (v. 9) - 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: XkbGetKbdByName use-after-free (CVE-2022-4283)
* xorg-x11-server: XTestSwapFakeInput stack overflow (CVE-2022-46340)
* xorg-x11-server: XIPassiveUngrab out-of-bounds access (CVE-2022-46341)
* xorg-x11-server: XvdiSelectVideoNotify use-after-free (CVE-2022-46342)
* xorg-x11-server: ScreenSaverSetAttributes use-after-free (CVE-2022-46343)
* xorg-x11-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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat
Enterprise Linux 9.2 Release Notes linked from 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/):
2119016 - 'ghost pointer' behavior observed when using TigerVNC's x0vncserver
2119017 - x0vncserver incorrectly maps keysym from vncclient running german
keyboard
2151755 - CVE-2022-46340 xorg-x11-server: XTestSwapFakeInput stack overflow
2151756 - CVE-2022-46341 xorg-x11-server: XIPassiveUngrab out-of-bounds access
2151757 - CVE-2022-46342 xorg-x11-server: XvdiSelectVideoNotify use-after-free
2151758 - CVE-2022-46343 xorg-x11-server: ScreenSaverSetAttributes
use-after-free
2151760 - CVE-2022-46344 xorg-x11-server: XIChangeProperty out-of-bounds access
2151761 - CVE-2022-4283 xorg-x11-server: XkbGetKbdByName use-after-free
2164703 - selinux policy will not allow tigervnc-server to start
2169965 - Backport upstream fix for broken keyboard handling
6. Package List:
Red Hat Enterprise Linux AppStream (v. 9):
Source:
tigervnc-1.12.0-13.el9_2.src.rpm
aarch64:
tigervnc-1.12.0-13.el9_2.aarch64.rpm
tigervnc-debuginfo-1.12.0-13.el9_2.aarch64.rpm
tigervnc-debugsource-1.12.0-13.el9_2.aarch64.rpm
tigervnc-server-1.12.0-13.el9_2.aarch64.rpm
tigervnc-server-debuginfo-1.12.0-13.el9_2.aarch64.rpm
tigervnc-server-minimal-1.12.0-13.el9_2.aarch64.rpm
tigervnc-server-minimal-debuginfo-1.12.0-13.el9_2.aarch64.rpm
tigervnc-server-module-1.12.0-13.el9_2.aarch64.rpm
tigervnc-server-module-debuginfo-1.12.0-13.el9_2.aarch64.rpm
noarch:
tigervnc-icons-1.12.0-13.el9_2.noarch.rpm
tigervnc-license-1.12.0-13.el9_2.noarch.rpm
tigervnc-selinux-1.12.0-13.el9_2.noarch.rpm
ppc64le:
tigervnc-1.12.0-13.el9_2.ppc64le.rpm
tigervnc-debuginfo-1.12.0-13.el9_2.ppc64le.rpm
tigervnc-debugsource-1.12.0-13.el9_2.ppc64le.rpm
tigervnc-server-1.12.0-13.el9_2.ppc64le.rpm
tigervnc-server-debuginfo-1.12.0-13.el9_2.ppc64le.rpm
tigervnc-server-minimal-1.12.0-13.el9_2.ppc64le.rpm
tigervnc-server-minimal-debuginfo-1.12.0-13.el9_2.ppc64le.rpm
tigervnc-server-module-1.12.0-13.el9_2.ppc64le.rpm
tigervnc-server-module-debuginfo-1.12.0-13.el9_2.ppc64le.rpm
s390x:
tigervnc-1.12.0-13.el9_2.s390x.rpm
tigervnc-debuginfo-1.12.0-13.el9_2.s390x.rpm
tigervnc-debugsource-1.12.0-13.el9_2.s390x.rpm
tigervnc-server-1.12.0-13.el9_2.s390x.rpm
tigervnc-server-debuginfo-1.12.0-13.el9_2.s390x.rpm
tigervnc-server-minimal-1.12.0-13.el9_2.s390x.rpm
tigervnc-server-minimal-debuginfo-1.12.0-13.el9_2.s390x.rpm
tigervnc-server-module-1.12.0-13.el9_2.s390x.rpm
tigervnc-server-module-debuginfo-1.12.0-13.el9_2.s390x.rpm
x86_64:
tigervnc-1.12.0-13.el9_2.x86_64.rpm
tigervnc-debuginfo-1.12.0-13.el9_2.x86_64.rpm
tigervnc-debugsource-1.12.0-13.el9_2.x86_64.rpm
tigervnc-server-1.12.0-13.el9_2.x86_64.rpm
tigervnc-server-debuginfo-1.12.0-13.el9_2.x86_64.rpm
tigervnc-server-minimal-1.12.0-13.el9_2.x86_64.rpm
tigervnc-server-minimal-debuginfo-1.12.0-13.el9_2.x86_64.rpm
tigervnc-server-module-1.12.0-13.el9_2.x86_64.rpm
tigervnc-server-module-debuginfo-1.12.0-13.el9_2.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-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/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9.2_release_notes/index
8. Contact:
The Red Hat security contact is <[email protected]>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2023 Red Hat, Inc.
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