CVE-2020-28368

EUVD-2020-20827
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.4 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 20%
Affected Products (NVD)
VendorProductVersion
xenxen
𝑥
≤ 4.14.0
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
xen
bookworm
4.17.3+10-g091466ba55-1~deb12u1
fixed
bullseye
4.14.6-1
fixed
bullseye (security)
4.14.5+94-ge49571868d-1
fixed
sid
4.17.3+36-g54dacb5c02-1
fixed
trixie
4.17.3+36-g54dacb5c02-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
xen
bionic
needed
focal
needed
groovy
ignored
hirsute
ignored
impish
ignored
jammy
not-affected
kinetic
not-affected
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
dne
xenial
needed
Common Weakness Enumeration
References
http://www.openwall.com/lists/oss-security/2020/11/26/1
http://xenbits.xen.org/xsa/advisory-351.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5J66QUUHXH2RR4CNCKQRGVXVSOUFRPDA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XV23EZIMNLJN4YXRRXLQV2ALW6ZEALXV/
https://platypusattack.com
https://www.debian.org/security/2020/dsa-4804
https://www.zdnet.com/article/new-platypus-attack-can-steal-data-from-intel-cpus/
https://xenbits.xen.org/xsa/advisory-351.html
http://www.openwall.com/lists/oss-security/2020/11/26/1
http://xenbits.xen.org/xsa/advisory-351.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5J66QUUHXH2RR4CNCKQRGVXVSOUFRPDA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XV23EZIMNLJN4YXRRXLQV2ALW6ZEALXV/
https://platypusattack.com
https://www.debian.org/security/2020/dsa-4804
https://www.zdnet.com/article/new-platypus-attack-can-steal-data-from-intel-cpus/
https://xenbits.xen.org/xsa/advisory-351.html