A xorg-x11-server security update has been released for openSUSE Leap 15.3.

openSUSE-SU-2021:4136-1: important: Security update for xorg-x11-server

openSUSE Security Update: Security update for xorg-x11-server
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Announcement ID: openSUSE-SU-2021:4136-1
Rating: important
References: #1190487 #1190488 #1190489
Cross-References: CVE-2021-4009 CVE-2021-4010 CVE-2021-4011

CVSS scores:
CVE-2021-4009 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-4010 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2021-4011 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:
openSUSE Leap 15.3
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An update that fixes three vulnerabilities is now available.

Description:

This update for xorg-x11-server fixes the following issues:

- CVE-2021-4009: The handler for the CreatePointerBarrier request of the
XFixes extension does not properly validate the request length leading
to out of bounds memory write. (bsc#1190487)
- CVE-2021-4010: The handler for the Suspend request of the Screen Saver
extension does not properly validate the request length leading to out
of bounds memory write. (bsc#1190488)
- CVE-2021-4011: The handlers for the RecordCreateContext and
RecordRegisterClients requests of the Record extension do not properly
validate the request length leading to out of bounds memory write.
(bsc#1190489)

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods
like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 15.3:

zypper in -t patch openSUSE-SLE-15.3-2021-4136=1


Package List:

- openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64):

xorg-x11-server-1.20.3-22.5.42.1
xorg-x11-server-debuginfo-1.20.3-22.5.42.1
xorg-x11-server-debugsource-1.20.3-22.5.42.1
xorg-x11-server-extra-1.20.3-22.5.42.1
xorg-x11-server-extra-debuginfo-1.20.3-22.5.42.1
xorg-x11-server-sdk-1.20.3-22.5.42.1
xorg-x11-server-source-1.20.3-22.5.42.1
xorg-x11-server-wayland-1.20.3-22.5.42.1
xorg-x11-server-wayland-debuginfo-1.20.3-22.5.42.1

References:

  https://www.suse.com/security/cve/CVE-2021-4009.html
  https://www.suse.com/security/cve/CVE-2021-4010.html
  https://www.suse.com/security/cve/CVE-2021-4011.html
  https://bugzilla.suse.com/1190487
  https://bugzilla.suse.com/1190488
  https://bugzilla.suse.com/1190489