CVE-2020-28368: 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…

PriorityP419medium4.4CVSS 3.1

AVLACLPRHUINSUCHINAN

EPSS

0.39%

31.9th percentile

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.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	xen	< xen 4.14.0+80-gd101b417b7-1 (bookworm)	xen 4.14.0+80-gd101b417b7-1 (bookworm)
fedoraproject	fedora	—	—
xen	xen	<= 4.14.0	—
xen	xen	>= 0 < 4.14.0+80-gd101b417b7-1	4.14.0+80-gd101b417b7-1
xen	xen	>= 0 < 4.14.0+80-gd101b417b7-1	4.14.0+80-gd101b417b7-1
xen	xen	>= 0 < 4.14.0+80-gd101b417b7-1	4.14.0+80-gd101b417b7-1
xen	xen	>= 0 < 4.14.0+80-gd101b417b7-1	4.14.0+80-gd101b417b7-1

CVSS provenance

nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

nvdv2.02.1LOWAV:L/AC:L/Au:N/C:P/I:N/A:N

osv4.4MEDIUM

vendor_debian4.4MEDIUM

vendor_redhat4.4MEDIUM

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.