CVE-2020-28368 Information disclosure in n/a

Medium 4.4 Published 10 Nov 2020 Updated 4 Aug 2024

Guest OS administrators can obtain sensitive information like AES keys via a side-channel attack on power monitoring interfaces in Xen.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2020-28368?

CVE-2020-28368 is a medium-severity vulnerability in Debian Debian Linux, published on 10 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Xen through 4.14.x allows guest OS administrators to obtain sensitive information (such as AES keys from outside the guest) via a side-channel attack on a power/energy monitoring interface, aka a "Platypus" attack. NOTE: there is only one logically independent fix: to change the access control for each such interface in Xen.

Weakness: CWE-862

Which versions are affected by CVE-2020-28368?

It affects 3 products.

Linux distribution packages (19)

`xen` SUSE:Linux Enterprise High Performance Computing 15-ESPOS	All versions	`4.10.4_20-3.47.1`
`xen` SUSE:Linux Enterprise High Performance Computing 15-LTSS	All versions	`4.10.4_20-3.47.1`
`xen` SUSE:Linux Enterprise Module for Basesystem 15 SP1	All versions	`4.12.4_02-3.34.2`
`xen` SUSE:Linux Enterprise Module for Basesystem 15 SP2	All versions	`4.13.2_02-3.16.2`
`xen` SUSE:Linux Enterprise Module for Server Applications 15 SP1	All versions	`4.12.4_02-3.34.2`
`xen` SUSE:Linux Enterprise Module for Server Applications 15 SP2	All versions	`4.13.2_02-3.16.2`
`xen` SUSE:Linux Enterprise Server 12 SP4-LTSS	All versions	`4.11.4_12-2.42.1`
`xen` SUSE:Linux Enterprise Server 12 SP5	All versions	`4.12.4_02-3.30.1`
`xen` SUSE:Linux Enterprise Server 12 SP5	All versions	`4.12.4_04-3.33.1`
`xen` SUSE:Linux Enterprise Server for SAP Applications 12 SP4	All versions	`4.11.4_12-2.42.1`
`xen` SUSE:Linux Enterprise Server for SAP Applications 12 SP5	All versions	`4.12.4_02-3.30.1`
`xen` SUSE:Linux Enterprise Server for SAP Applications 12 SP5	All versions	`4.12.4_04-3.33.1`
`xen` SUSE:Linux Enterprise Server for SAP Applications 15	All versions	`4.10.4_20-3.47.1`
`xen` SUSE:Linux Enterprise Software Development Kit 12 SP5	All versions	`4.12.4_02-3.30.1`
`xen` SUSE:Linux Enterprise Software Development Kit 12 SP5	All versions	`4.12.4_04-3.33.1`
`xen` SUSE:OpenStack Cloud 9	All versions	`4.11.4_12-2.42.1`
`xen` SUSE:OpenStack Cloud Crowbar 9	All versions	`4.11.4_12-2.42.1`
`xen` openSUSE:Leap 15.1	All versions	`4.12.4_02-lp151.2.30.1`
`xen` openSUSE:Leap 15.2	All versions	`4.13.2_02-lp152.2.15.1`

Products include Debian Debian Linux, Fedoraproject Fedora, Xen Xen.

How do I fix CVE-2020-28368?

Apply the vendor's patch.

Is CVE-2020-28368 being exploited?

There is no known exploitation of CVE-2020-28368 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2020-28368, DEBIAN-CVE-2020-28368, GHSA-hg2f-7x6w-x2hx, SUSE-SU-2020:3412-1, SUSE-SU-2020:3413-1, SUSE-SU-2020:3414-1 and 6 more.