Information disclosure in Intel Processor Microcode Package for Linux - CVE-2020-0543

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Main Vulnerability Database Vulnerabilities #VU28928

Information disclosure in Intel Processor Microcode Package for Linux - CVE-2020-0543

Published: June 10, 2020 / Updated: July 15, 2020


Vulnerability identifier: #VU28928
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-2020-0543
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to incomplete cleanup from specific special register read operations in some Intel(R) Processors. A local user can gain unauthorized access to sensitive information on the system.


Affected software

Intel Processor Microcode Package for Linux
Arch Linux
Amazon Linux AMI
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE CaaS Platform
SUSE Manager Server
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
SUSE Enterprise Storage
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Slackware Linux
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Server
SUSE Linux Enterprise Module for Server Applications
Opensuse
Ubuntu
Fedora
Xen
intel-microcode (Debian package)
intel-microcode (Ubuntu package)
microcode_ctl (Red Hat package)
kernel (Red Hat package)
xen (Alpine package)
kernel-rt (Red Hat package)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
sca-patterns-sle11
microcode_ctl
linux-4.4.227/kernel-generic
linux-4.4.227/kernel-huge
linux-4.4.227/kernel-modules
linux-4.4.227/kernel-headers
xenstore-utils (Ubuntu package)
libxenevtchn1 (Ubuntu package)
xen-utils-common (Ubuntu package)
xen-hypervisor-4.11-arm64 (Ubuntu package)
xen-utils-4.11 (Ubuntu package)
libxendevicemodel1 (Ubuntu package)
libxenmisc4.11 (Ubuntu package)
xen-hypervisor-4.11-armhf (Ubuntu package)
xen-hypervisor-4.11-amd64 (Ubuntu package)
libxengnttab1 (Ubuntu package)
kernel
kernel-headers
MRG Realtime
Oracle VM Server for x86
IBM Systems Director
Juniper Junos Space

How to mitigate CVE-2020-0543

This vulnerability will be addressed by Linux kernel vendors.

Intel Processor Microcode Package for Linux - update to 20200609
intel-microcode (Debian package) - addressed in versions 3.20200609.2~deb9u1, 3.20200609.2~deb10u1
intel-microcode (Ubuntu package) - addressed in versions 3.20200609.0ubuntu0.16.04.0, 3.20200609.0ubuntu0.18.04.0, 3.20200609.0ubuntu0.19.10.0, 3.20200609.0ubuntu0.20.04.0
microcode_ctl (Red Hat package) - addressed in versions 1.17-33.26.el6_10, 2.1-12.30.el7_2, 2.1-12.39.el7_2, 2.1-16.42.el7_3, 2.1-22.32.el7_4, 2.1-22.41.el7_4, 2.1-47.14.el7_6, 2.1-47.23.el7_6, 2.1-53.9.el7_7, 2.1-53.18.el7_7, 2.1-73.11.el7_9, 20180807a-2.20200609.1.el8_0, 20190618-1.20200609.1.el8_1, 20190618-1.20210608.1.el8_1, 20191115-4.20200602.2.el8_2, 20191115-4.20210608.1.el8_2, 20210216-1.20210608.1.el8_4
kernel (Red Hat package) - addressed in versions 2.6.32-754.30.2.el6, 3.10.0-327.89.1.el7, 3.10.0-514.78.1.el7, 3.10.0-693.69.1.el7, 3.10.0-957.56.1.el7, 3.10.0-1062.30.1.el7, 3.10.0-1127.13.1.el7, 4.18.0-80.23.2.el8_0, 4.18.0-147.20.1.el8_1, 4.18.0-193.6.3.el8_2
xen (Alpine package) - update to 4.12.3-r1
kernel-rt (Red Hat package) - addressed in versions 3.10.0-693.69.1.rt56.667.el6rt, 4.18.0-193.6.3.rt13.59.el8_2
sca-patterns-sle11 - update to 1.3.1-7.6.1
microcode_ctl - addressed in versions 2.1-38.fc31, 2.1-38.fc32, 2.1-39.fc31, 2.1-39.fc32, 2.1-39.2.fc32, 2.1-39.3.fc32
linux-4.4.227/kernel-generic - update to 4.4.227
linux-4.4.227/kernel-huge - update to 4.4.227
linux-4.4.227/kernel-modules - update to 4.4.227
linux-4.4.227/kernel-headers - update to 4.4.227_smp
xenstore-utils (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
libxenevtchn1 (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
xen-utils-common (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
xen-hypervisor-4.11-arm64 (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
xen-utils-4.11 (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
libxendevicemodel1 (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
libxenmisc4.11 (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
xen-hypervisor-4.11-armhf (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
xen-hypervisor-4.11-amd64 (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
libxengnttab1 (Ubuntu package) - update to 4.11.3+24-g14b62ab3e5-1ubuntu2.3
kernel - addressed in versions 5.6.18-200.fc31, 5.6.18-300.fc32
kernel-headers - addressed in versions 5.6.18-200.fc31, 5.6.18-300.fc32
Juniper Junos Space - update to 20.3R1
microcode_ctl - addressed in versions 20191115-4.20210608.1, 20210216-1.20210608.1

External References

Related Security Bulletins