What’s Vulnerable › Vulnerabilities

CVE-2020-28368

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-11-10 · updated 2026-06-17
• Weakness: CWE-862

Description

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 products

• Debian Linux: 10.0
• Fedoraproject Fedora: 32
• xen: through 4.14.0

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/

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