CVE-2020-28368
First published: Tue Nov 10 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/xen | 4.11.4+107-gef32c7afa2-1 4.14.6-1 4.14.5+94-ge49571868d-1 4.17.1+2-gb773c48e36-1 4.17.2+55-g0b56bed864-1 | |
| Xen xen-unstable | <=4.14.0 | |
| Fedora | =32 | |
| Debian | =10.0 |
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Reference Links
- https://xenbits.xen.org/xsa/advisory-351.html
- https://security-tracker.debian.org/tracker/CVE-2020-28368
- 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@lists.fedoraproject.org/message/5J66QUUHXH2RR4CNCKQRGVXVSOUFRPDA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XV23EZIMNLJN4YXRRXLQV2ALW6ZEALXV/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5J66QUUHXH2RR4CNCKQRGVXVSOUFRPDA/
Frequently Asked Questions
What is the severity of CVE-2020-28368?
CVE-2020-28368 is classified as a medium severity vulnerability due to its potential to expose sensitive information through side-channel attacks.
How do I fix CVE-2020-28368?
To mitigate CVE-2020-28368, you should update Xen to versions 4.14.6 or later, or to the specified remedy versions available from Debian and Fedora.
Who is affected by CVE-2020-28368?
CVE-2020-28368 affects administrators of guest operating systems running vulnerable versions of Xen.
What type of attack does CVE-2020-28368 involve?
CVE-2020-28368 involves a side-channel attack leveraging power/energy monitoring interfaces to extract sensitive information.
Can CVE-2020-28368 be exploited remotely?
CVE-2020-28368 requires local access to the guest OS, making it less likely to be exploited remotely, but still poses a significant risk.
- collector/security-tracker-debian
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/weakness
- agent/severity
- agent/references
- agent/last-modified-date
- agent/author
- agent/first-publish-date
- agent/event
- agent/description
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/debian
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.14.0
- vendor/fedoraproject
- canonical/fedora
- version/fedora/32
- vendor/debian
- canonical/debian
- version/debian/10.0