Out-of-bounds read in X.org Server - CVE-2020-14360

Vulnerability identifier: #VU48758

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N]

CVE-ID: CVE-2020-14360

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a boundary condition when processing XkbSetMap requests. A local user can trigger an out-of-bounds read error and read contents of memory on the system.

X.org Server
Arch Linux
Gentoo Linux
Red Hat Enterprise Linux for Scientific Computing
CentOS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Ubuntu
Fedora
Cloud Pak for Security (CP4S)
xorg-server (Debian package)
xorg-x11-server (Red Hat package)
xorg-server (Alpine package)
egl-wayland (Red Hat package)
libglvnd (Red Hat package)
libwacom (Red Hat package)
libX11 (Red Hat package)
xserver-xorg-core (Ubuntu package)
libinput (Red Hat package)
xserver-xorg-core-hwe-16.04 (Ubuntu package)
xserver-xorg-core-hwe-18.04 (Ubuntu package)
xorg-x11-server
libdrm (Red Hat package)
xorg-x11-drivers (Red Hat package)
mesa (Red Hat package)
OpenShift Virtualization
Data Computing Appliance (DCA)

Install updates from vendor's website.

X.org Server - update to 1.20.10
Cloud Pak for Security (CP4S) - update to 1.8.0.0
xorg-server (Debian package) - update to 2:1.20.4-1+deb10u2
xorg-x11-server (Red Hat package) - addressed in versions 1.20.4-15.el7_9, 1.20.10-1.el8
xorg-server (Alpine package) - update to 1.20.10-r0
egl-wayland (Red Hat package) - update to 1.1.5-3.el8
libglvnd (Red Hat package) - update to 1.3.2-1.el8
libwacom (Red Hat package) - update to 1.6-2.el8
libX11 (Red Hat package) - update to 1.6.8-4.el8
xserver-xorg-core (Ubuntu package) - addressed in versions 2:1.15.1-0ubuntu2.11+esm3, 2:1.18.4-0ubuntu0.11, 2:1.19.6-1ubuntu4.8, 2:1.20.8-2ubuntu2.6, 2:1.20.9-2ubuntu1.1
libinput (Red Hat package) - update to 1.16.3-1.el8
xserver-xorg-core-hwe-16.04 (Ubuntu package) - update to 2:1.19.6-1ubuntu4.1~16.04.5
xserver-xorg-core-hwe-18.04 (Ubuntu package) - update to 2:1.20.8-2ubuntu2.2~18.04.4
xorg-x11-server - addressed in versions 1.20.10-1.fc32, 1.20.10-1.fc33
libdrm (Red Hat package) - update to 2.4.103-1.el8
OpenShift Virtualization - addressed in versions 2.6.6, 4.8.0
Data Computing Appliance (DCA) - update to 4.3.0.0
xorg-x11-drivers (Red Hat package) - update to 7.7-30.el8
mesa (Red Hat package) - update to 20.3.3-2.el8

• http://seclists.org/oss-sec/2020/q4/177

• Multiple vulnerabilities in X.Org Server
• Out-of-bounds read in xorg-server (Alpine package)
• Arch Linux update for xorg-server
• Debian update for xorg-server
• Gentoo update for X.Org X Server
• Red Hat Enterprise Linux 7 update for xorg-x11-server
• CentOS 7 update for xorg-x11-server
• Red Hat Enterprise Linux 8 update for userspace graphics, xorg-x11, and mesa
• Multiple vulnerabilities in IBM Cloud Pak for Security
• Multiple vulnerabilities in Dell EMC Data Computing Appliance (DCA)
• Multiple vulnerabilities in OpenShift Virtualization 4.8
• Multiple vulnerabilities in OpenShift Virtualization 2.6
• Ubuntu update for xorg-server
• Ubuntu update for xorg-server
• Fedora 33 update for xorg-x11-server
• Fedora 32 update for xorg-x11-server