CVE-2020-28368
MEDIUMXen < 4.14.0 - Unauthenticated Sensitive Information Disclosure via Power Monitoring Side-Channel
Title source: llmDescription
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.
References (8)
Core 8
Core References
Third Party Advisory x_refsource_misc
https://www.zdnet.com/article/new-platypus-attack-can-steal-data-from-intel-cpus/
Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-351.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2020/11/26/1
Mailing List, Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2020/dsa-4804
Patch, Vendor Advisory x_refsource_misc
https://xenbits.xen.org/xsa/advisory-351.html
Third Party Advisory x_refsource_misc
https://platypusattack.com
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XV23EZIMNLJN4YXRRXLQV2ALW6ZEALXV/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5J66QUUHXH2RR4CNCKQRGVXVSOUFRPDA/
Scores
CVSS v3
4.4
EPSS
0.0007
EPSS Percentile
20.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-862
Status
published
Products (3)
debian/debian_linux
10.0
fedoraproject/fedora
32
xen/xen
< 4.14.0
Published
Nov 10, 2020
Tracked Since
Feb 18, 2026