CVE-2020-0543 Information disclosure in Intel(R) Processors

Medium 5.5 Published 15 Jun 2020 Updated 4 Aug 2024

Incomplete cleanup in Intel processors allows authenticated local users to disclose sensitive information.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2020-0543?

CVE-2020-0543 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 15 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Weakness: CWE-459

Which versions are affected by CVE-2020-0543?

It affects 694 products.

Linux distribution packages (24)

`sca-patterns-sle11` SUSE:Enterprise Storage 6	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Linux Enterprise High Performance Computing 15-ESPOS	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Linux Enterprise High Performance Computing 15-LTSS	All versions	`1.3.1-7.6.1`
`xen` SUSE:Linux Enterprise Module for Basesystem 15 SP1	All versions	`4.12.3_02-3.18.1`
`xen` SUSE:Linux Enterprise Module for Server Applications 15 SP1	All versions	`4.12.3_02-3.18.1`
`sca-patterns-sle11` SUSE:Linux Enterprise Module for Server Applications 15 SP2	All versions	`1.3.1-7.6.1`
`xen` SUSE:Linux Enterprise Server 12 SP4	All versions	`4.11.4_02-2.26.1`
`xen` SUSE:Linux Enterprise Server 12 SP5	All versions	`4.12.3_02-3.14.1`
`sca-patterns-sle11` SUSE:Linux Enterprise Server 15 SP1-BCL	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Linux Enterprise Server 15 SP1-LTSS	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Linux Enterprise Server 15-LTSS	All versions	`1.3.1-7.6.1`
`xen` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`4.11.4_02-2.26.1`
`xen` SUSE:Linux Enterprise Server for SAP Applications 12 SP5	All versions	`4.12.3_02-3.14.1`
`sca-patterns-sle11` SUSE:Linux Enterprise Server for SAP Applications 15	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Linux Enterprise Server for SAP Applications 15 SP1	All versions	`1.3.1-7.6.1`
`xen` SUSE:Linux Enterprise Software Development Kit 12 SP4	All versions	`4.11.4_02-2.26.1`
`xen` SUSE:Linux Enterprise Software Development Kit 12 SP5	All versions	`4.12.3_02-3.14.1`
`sca-patterns-sle11` SUSE:Manager Proxy 4.0	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Manager Retail Branch Server 4.0	All versions	`1.3.1-7.6.1`
`sca-patterns-sle11` SUSE:Manager Server 4.0	All versions	`1.3.1-7.6.1`
`xen` openSUSE:Leap 15.1	All versions	`4.12.3_02-lp151.2.18.2`
`sca-patterns-sle11` openSUSE:Tumbleweed	All versions	`1.3.5-1.2`

Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Intel Celeron 1000m, Intel Celeron 1005m, Intel Celeron 1007u, Intel Celeron 1017u and 688 more.

How do I fix CVE-2020-0543?

Apply the vendor's patch.

Is CVE-2020-0543 being exploited?

There is no known exploitation of CVE-2020-0543 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2020-0543, DEBIAN-CVE-2020-0543, GHSA-8gvr-7c6p-jfwg, SUSE-SU-2020:1609-1, SUSE-SU-2020:1632-1, SUSE-SU-2020:1633-1 and 4 more.