Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions

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Summary

CVECVE-2023-6377
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-12-13 07:15:30 UTC
Updated2026-06-23 18:17:37 UTC
DescriptionA flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-125 | CWE-125 Out-of-bounds Read

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 11.0 All All All
Operating System Debian Debian Linux 12.0 All All All
Operating System Redhat Enterprise Linux 6.0 All All All
Operating System Redhat Enterprise Linux 7.0 All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux 9.0 All All All
Operating System Redhat Enterprise Linux Eus 9.2 All All All
Application X.org Xwayland All All All All
Application X.org X Server All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION unaffected 0:1.1.0-25.el6_10.14 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 7 unaffected 0:1.8.0-28.el7_9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 7 unaffected 0:1.20.4-25.el7_9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:1.13.1-2.el8_9.4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:1.20.11-22.el8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:21.1.3-15.el8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support unaffected 0:1.9.0-15.el8_2.6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service unaffected 0:1.9.0-15.el8_2.6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.2 Update Services For SAP Solutions unaffected 0:1.9.0-15.el8_2.6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support unaffected 0:1.11.0-8.el8_4.5 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service unaffected 0:1.11.0-8.el8_4.5 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.4 Update Services For SAP Solutions unaffected 0:1.11.0-8.el8_4.5 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support unaffected 0:1.12.0-6.el8_6.6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support unaffected 0:1.12.0-15.el8_8.4 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:1.13.1-3.el9_3.3 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:1.20.11-24.el9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:22.1.9-5.el9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support unaffected 0:1.11.0-22.el9_0.5 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support unaffected 0:1.12.0-14.el9_2.2 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified

References

ReferenceSourceLinkTags
X.Org X Server, XWayland: Multiple Vulnerabilities (GLSA 202401-30) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
oss-security - FW: X.Org Security Advisory: Issues in X.Org X server prior to 21.1.10 and Xwayland prior to 23.2.3 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
December 2023 X.Org X Server Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
access.redhat.com/errata/RHSA-2024:0015 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
access.redhat.com/errata/RHSA-2024:0017 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
lists.x.org/archives/xorg-announce/2023-December/003435.html af854a3a-2127-422b-91ae-364da2661108 lists.x.org Mailing List
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
gitlab.freedesktop.org/xorg/xserver/-/commit/0c1a93d319558fe3ab2d94f51d174b4f93810afd af854a3a-2127-422b-91ae-364da2661108 gitlab.freedesktop.org Patch
lists.debian.org/debian-lts-announce/2023/12/msg00013.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
access.redhat.com/errata/RHSA-2024:0006 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 38 Update: tigervnc-1.13.1-9.fc38 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
access.redhat.com/errata/RHSA-2024:2995 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
access.redhat.com/security/cve/CVE-2023-6377 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Vendor Advisory
access.redhat.com/errata/RHSA-2025:13998 [email protected] access.redhat.com
access.redhat.com/errata/RHSA-2023:7886 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Vendor Advisory
access.redhat.com/errata/RHSA-2024:2169 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
access.redhat.com/errata/RHSA-2024:0009 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
lists.fedoraproject.org/archives/list/[email protected]/messag... af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
lists.debian.org/debian-lts-announce/2023/12/msg00008.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
access.redhat.com/errata/RHSA-2024:2996 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
bugzilla.redhat.com/show_bug.cgi af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking
access.redhat.com/errata/RHSA-2024:2170 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
www.debian.org/security/2023/dsa-5576 af854a3a-2127-422b-91ae-364da2661108 www.debian.org
access.redhat.com/errata/RHSA-2024:0018 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
access.redhat.com/errata/RHSA-2024:0010 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
access.redhat.com/errata/RHSA-2024:0016 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
access.redhat.com/errata/RHSA-2024:0014 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
access.redhat.com/errata/RHSA-2024:0020 af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: This issue was discovered by Peter Hutterer (Red Hat). (en)

Additional Advisory Data

SourceTimeEvent
CNA2023-11-30T00:00:00.000ZReported to Red Hat.
CNA2023-12-13T00:00:00.000ZMade public.

Workarounds

CNA: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Legacy QID Mappings

  • 161260 Oracle Enterprise Linux Security Update for xorg-x11-server (ELSA-2024-0009)
  • 161261 Oracle Enterprise Linux Security Update for tigervnc (ELSA-2024-0006)
  • 161265 Oracle Enterprise Linux Security Update for tigervnc (ELSA-2024-0010)
  • 161267 Oracle Enterprise Linux Security Update for tigervnc (ELSA-2024-0018)
  • 200008 Ubuntu Security Notification for X.Org X Server Vulnerabilities (USN-6555-2)
  • 200009 Ubuntu Security Notification for X.Org X Server Vulnerabilities (USN-6555-1)
  • 242635 Red Hat Update for tigervnc (RHSA-2023:7886)
  • 242638 Red Hat Update for tigervnc (RHSA-2024:0017)
  • 242648 Red Hat Update for tigervnc (RHSA-2024:0006)
  • 242649 Red Hat Update for tigervnc (RHSA-2024:0020)
  • 242650 Red Hat Update for tigervnc (RHSA-2024:0015)
  • 242652 Red Hat Update for tigervnc (RHSA-2024:0014)
  • 242654 Red Hat Update for tigervnc (RHSA-2024:0018)
  • 242660 Red Hat Update for tigervnc (RHSA-2024:0010)
  • 242662 Red Hat Update for tigervnc (RHSA-2024:0016)
  • 242665 Red Hat Update for xorg-x11-server (RHSA-2024:0009)
  • 257273 Centos Security Update for tigervnc
  • 257274 Centos Security Update for xorg-x11-server
  • 257276 CentOS Security Update for tigervnc (CESA-2024:0006)
  • 257278 CentOS Security Update for xorg-x11-server (CESA-2024:0009)
  • 284828 Fedora Security Update for xorg (FEDORA-2023-77c8903bcb)
  • 284852 Fedora Security Update for tigervnc (FEDORA-2023-ec02e360af)
  • 285097 Fedora Security Update for xorg (FEDORA-2023-93940b58fd)
  • 285098 Fedora Security Update for tigervnc (FEDORA-2023-52460bedda)
  • 296108 Oracle Solaris 11.4 Support Repository Update (SRU) 66.164.1 Missing (CPUJAN2024)
  • 357185 Amazon Linux Security Advisory for xorg-x11-server : AL2012-2024-484
  • 357249 Amazon Linux Security Advisory for xorg-x11-server : ALAS2023-2024-522
  • 379273 Alibaba Cloud Linux Security Update for xorg-x11-server (ALINUX2-SA-2024:0002)
  • 379625 Alibaba Cloud Linux Security Update for tigervnc (ALINUX3-SA-2024:0028)
  • 505836 Alpine Linux Security Update for xorg-server
  • 6000380 Debian Security Update for xorg-server (DLA 3686-1)
  • 6000381 Debian Security Update for xorg-server (DSA 5576-1)
  • 6000388 Debian Security Update for xorg-server (DLA 3686-2)
  • 6000389 Debian Security Update for xorg-server (DSA 5576-2)
  • 673396 EulerOS Security Update for xorg-x11-server (EulerOS-SA-2024-1210)
  • 673399 EulerOS Security Update for xorg-x11-server (EulerOS-SA-2024-1352)
  • 673442 EulerOS Security Update for xorg-x11-server (EulerOS-SA-2024-1307)
  • 673626 EulerOS Security Update for xorg-x11-server (EulerOS-SA-2024-1232)
  • 673924 EulerOS Security Update for tigervnc (EulerOS-SA-2024-1304)
  • 673929 EulerOS Security Update for xorg-x11-server (EulerOS-SA-2024-1254)
  • 673935 EulerOS Security Update for xorg-x11-server (EulerOS-SA-2024-1330)
  • 674012 EulerOS Security Update for xorg-x11-server (EulerOS-SA-2024-1190)
  • 691374 Free Berkeley Software Distribution (FreeBSD) Security Update for xorg (972568d6-3485-40ab-80ff-994a8aaf9683)
  • 710847 Gentoo Linux X.Org X Server, XWayland Multiple Vulnerabilities (GLSA 202401-30)
  • 755500 SUSE Enterprise Linux Security Update for xwayland (SUSE-SU-2023:4926-1)
  • 755501 SUSE Enterprise Linux Security Update for xorg-x11-server (SUSE-SU-2023:4925-1)
  • 755514 SUSE Enterprise Linux Security Update for xorg-x11-server (SUSE-SU-2023:4935-1)
  • 755515 SUSE Enterprise Linux Security Update for xorg-x11-server (SUSE-SU-2023:4934-1)
  • 755528 SUSE Enterprise Linux Security Update for xorg-x11-server (SUSE-SU-2023:4949-1)
  • 941513 AlmaLinux Security Update for tigervnc (ALSA-2024:0010)
  • 941516 AlmaLinux Security Update for tigervnc (ALSA-2024:0018)
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