Improper Initialization in xorg-server - CVE-2020-14347

Vulnerability identifier: #VU45684

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-14347

CWE-ID: CWE-665

Exploitation vector: Local access

Exploit availability: No public exploit available

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

A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.

xorg-server
Data Computing Appliance (DCA)
Gentoo Linux
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
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
CentOS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
Ubuntu
Opensuse
openEuler
xorg-x11-server (Red Hat package)
xorg-server (Alpine package)
xorg-server (Debian package)
xserver-xorg-core (Ubuntu package)
xserver-xorg-core-hwe-16.04 (Ubuntu package)
xserver-xorg-core-hwe-18.04 (Ubuntu package)
egl-wayland (Red Hat package)
libglvnd (Red Hat package)
libwacom (Red Hat package)
libX11 (Red Hat package)
libinput (Red Hat package)
xorg-x11-server
xorg-x11-server-help
xorg-x11-server-debugsource
xorg-x11-server-devel
xorg-x11-server-Xephyr
xorg-x11-server-debuginfo
libdrm (Red Hat package)
xorg-x11-drivers (Red Hat package)
mesa (Red Hat package)
Cloud Pak for Security (CP4S)
OpenShift Virtualization

Install update from vendor's website.

xorg-x11-server (Red Hat package) - addressed in versions 1.20.4-15.el7_9, 1.20.10-1.el8
Cloud Pak for Security (CP4S) - update to 1.8.0.0
xorg-server (Debian package) - update to 1.20.4-1+deb10u1
xserver-xorg-core (Ubuntu package) - addressed in versions 2:1.15.1-0ubuntu2.11+esm2, 2:1.18.4-0ubuntu0.9, 2:1.19.6-1ubuntu4.5, 2:1.20.8-2ubuntu2.3
xserver-xorg-core-hwe-16.04 (Ubuntu package) - update to 2:1.19.6-1ubuntu4.1~16.04.3
xserver-xorg-core-hwe-18.04 (Ubuntu package) - update to 2:1.20.8-2ubuntu2.2~18.04.2
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
libinput (Red Hat package) - update to 1.16.3-1.el8
xorg-x11-server - update to 1.20.8-4
xorg-x11-server-help - update to 1.20.8-4
xorg-x11-server-debugsource - update to 1.20.8-4
xorg-x11-server-devel - update to 1.20.8-4
xorg-x11-server-Xephyr - update to 1.20.8-4
xorg-x11-server-debuginfo - update to 1.20.8-4
libdrm (Red Hat package) - update to 2.4.103-1.el8
xorg-x11-drivers (Red Hat package) - update to 7.7-30.el8
mesa (Red Hat package) - update to 20.3.3-2.el8
OpenShift Virtualization - addressed in versions 2.6.6, 4.8.0
Data Computing Appliance (DCA) - update to 4.3.0.0

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14347
• https://lists.x.org/archives/xorg-announce/2020-July/003051.html
• https://www.openwall.com/lists/oss-security/2020/07/31/2

• Improper Initialization in NGINX xorg-server
• Improper Initialization in xorg-server (Alpine package)
• OpenSUSE Linux update for xorg-x11-server
• OpenSUSE Linux update for xorg-x11-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)
• openEuler update for xorg-x11-server
• Multiple vulnerabilities in OpenShift Virtualization 4.8
• Multiple vulnerabilities in OpenShift Virtualization 2.6
• Ubuntu update for xorg-server
• Ubuntu update for xorg-server