Heap-based buffer overflow in X.org Server and Xwayland - CVE-2024-31080

Vulnerability identifier: #VU88115

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2024-31080

CWE-ID: CWE-122

Exploitation vector: Local access

Exploit availability: No public exploit available

Affected software:
X.org Server
Oracle SD-WAN Edge
Xwayland
Oracle Solaris
Amazon Linux AMI
Debian Linux
Oracle Linux
Gentoo Linux
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Real Time 15
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
Red Hat Enterprise Linux Workstation
Anolis OS
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
SUSE Enterprise Storage
OpenBSD
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Ubuntu
Slackware Linux
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP2 LTSS
SUSE Linux Enterprise Server 15 SP3 LTSS
SUSE Linux Enterprise Desktop 15 SP4 LTSS
SUSE Linux Enterprise Server 15 SP4 LTSS
Development Tools Module
Basesystem Module
openSUSE Leap
openEuler
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
xwayland (Ubuntu package)
xserver-xorg-core (Ubuntu package)
tigervnc (Red Hat package)
tigervnc-server-applet
tigervnc-license
tigervnc-icons
tigervnc-server-module
tigervnc-server-minimal
tigervnc-server
tigervnc
tigervnc-selinux
xorg-x11-server-sdk
xorg-x11-server-debuginfo
xorg-x11-server-debugsource
xorg-x11-server-extra-debuginfo
xorg-x11-server
xorg-x11-server-extra
xorg-x11-server-wayland-debuginfo
xorg-x11-server-wayland
xorg-x11-server-source
xorg-x11-server-devel
xorg-x11-server-common
xorg-x11-server-Xwayland
xorg-x11-server-Xvfb
xorg-x11-server-Xorg
xorg-x11-server-Xnest
xorg-x11-server-Xephyr
xorg-x11-server-Xdmx
xorg-x11-server (Red Hat package)
xorg-x11-server-help
xorg-server (Debian package)
xorg-x11-server-doc
xorg-server-xephyr
xorg-server
xorg-server-xnest
xorg-server-xvfb
xorg-x11-server-Xwayland (Red Hat package)
xorg-server-xwayland
xwayland-devel
xwayland-debuginfo
xwayland
xwayland-debugsource
xorg-x11-server-Xvfb-debuginfo
x11-base/xorg-server
xorg-x11-server-Xwayland-devel
xorg-x11-server-Xwayland-debugsource
xorg-x11-server-Xwayland-debuginfo
x11-base/xwayland

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a boundary error within the ProcXIGetSelectedEvents() function. A local user can trigger a heap-based buffer overflow and read system memory.

Install updates from vendor's website.

• https://lists.x.org/archives/xorg-announce/2024-April/003497.html
• https://gitlab.freedesktop.org/xorg/xserver/-/commit/96798fc1967491c80a4d0