[RHSA-2023:2830-01] Moderate: tigervnc security and bug fix update

Tue May 16 12:00:10 UTC 2023

An update for tigervnc is now available for Red Hat Enterprise Linux 8.

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. 8) - 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 8.8 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/):

1437569 - 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
2164704 - selinux policy will not allow tigervnc-server to start
2169960 - Backport upstream fix for broken keyboard handling

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

Source:
tigervnc-1.12.0-15.el8_8.src.rpm

aarch64:
tigervnc-1.12.0-15.el8_8.aarch64.rpm
tigervnc-debuginfo-1.12.0-15.el8_8.aarch64.rpm
tigervnc-debugsource-1.12.0-15.el8_8.aarch64.rpm
tigervnc-server-1.12.0-15.el8_8.aarch64.rpm
tigervnc-server-debuginfo-1.12.0-15.el8_8.aarch64.rpm
tigervnc-server-minimal-1.12.0-15.el8_8.aarch64.rpm
tigervnc-server-minimal-debuginfo-1.12.0-15.el8_8.aarch64.rpm
tigervnc-server-module-1.12.0-15.el8_8.aarch64.rpm
tigervnc-server-module-debuginfo-1.12.0-15.el8_8.aarch64.rpm

noarch:
tigervnc-icons-1.12.0-15.el8_8.noarch.rpm
tigervnc-license-1.12.0-15.el8_8.noarch.rpm
tigervnc-selinux-1.12.0-15.el8_8.noarch.rpm

ppc64le:
tigervnc-1.12.0-15.el8_8.ppc64le.rpm
tigervnc-debuginfo-1.12.0-15.el8_8.ppc64le.rpm
tigervnc-debugsource-1.12.0-15.el8_8.ppc64le.rpm
tigervnc-server-1.12.0-15.el8_8.ppc64le.rpm
tigervnc-server-debuginfo-1.12.0-15.el8_8.ppc64le.rpm
tigervnc-server-minimal-1.12.0-15.el8_8.ppc64le.rpm
tigervnc-server-minimal-debuginfo-1.12.0-15.el8_8.ppc64le.rpm
tigervnc-server-module-1.12.0-15.el8_8.ppc64le.rpm
tigervnc-server-module-debuginfo-1.12.0-15.el8_8.ppc64le.rpm

s390x:
tigervnc-1.12.0-15.el8_8.s390x.rpm
tigervnc-debuginfo-1.12.0-15.el8_8.s390x.rpm
tigervnc-debugsource-1.12.0-15.el8_8.s390x.rpm
tigervnc-server-1.12.0-15.el8_8.s390x.rpm
tigervnc-server-debuginfo-1.12.0-15.el8_8.s390x.rpm
tigervnc-server-minimal-1.12.0-15.el8_8.s390x.rpm
tigervnc-server-minimal-debuginfo-1.12.0-15.el8_8.s390x.rpm
tigervnc-server-module-1.12.0-15.el8_8.s390x.rpm
tigervnc-server-module-debuginfo-1.12.0-15.el8_8.s390x.rpm

x86_64:
tigervnc-1.12.0-15.el8_8.x86_64.rpm
tigervnc-debuginfo-1.12.0-15.el8_8.x86_64.rpm
tigervnc-debugsource-1.12.0-15.el8_8.x86_64.rpm
tigervnc-server-1.12.0-15.el8_8.x86_64.rpm
tigervnc-server-debuginfo-1.12.0-15.el8_8.x86_64.rpm
tigervnc-server-minimal-1.12.0-15.el8_8.x86_64.rpm
tigervnc-server-minimal-debuginfo-1.12.0-15.el8_8.x86_64.rpm
tigervnc-server-module-1.12.0-15.el8_8.x86_64.rpm
tigervnc-server-module-debuginfo-1.12.0-15.el8_8.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/8/html/8.8_release_notes/index

8. Contact:

The Red Hat security contact is <secalert at redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2023 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=ld2g
-----END PGP SIGNATURE-----