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CVE-2020-28368

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Date: November 10, 2020

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.

Language: C

Severity Score

Related Resources (16)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5J66QUUHXH2RR4CNCKQRGVXVSOUFRPDA/
https://www.zdnet.com/article/new-platypus-attack-can-steal-data-from-intel-cpus/
https://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/
http://www.openwall.com/lists/oss-security/2020/11/26/1
https://www.debian.org/security/2020/dsa-4804
https://security.alpinelinux.org/vuln/CVE-2020-28368
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XV23EZIMNLJN4YXRRXLQV2ALW6ZEALXV/
http://xenbits.xen.org/xsa/advisory-351.html
https://access.redhat.com/security/cve/CVE-2020-28368
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-28368
https://platypusattack.com
https://security-tracker.debian.org/tracker/CVE-2020-28368
https://nvd.nist.gov/vuln/detail/CVE-2020-28368
https://www.mend.io/vulnerability-database/CVE-2020-28368

Severity Score

Weakness Type (CWE)

Observable Discrepancy

CWE-203

Missing Authorization

CWE-862

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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