VulnerabilityModified
CVE-2020-28368
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.
MEDIUM 4.4EPSS 0.40%
Does this matter?
Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.4 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.40% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Affected
- xen/xen · fedoraproject/fedora · debian/debian linux
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2020/11/26/1Mailing List, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-351.htmlVendor Advisory
- 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.comThird Party Advisory
- https://www.debian.org/security/2020/dsa-4804Mailing List, Third Party Advisory
- https://www.zdnet.com/article/new-platypus-attack-can-steal-data-from-intel-cpus/Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-351.htmlPatch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2020/11/26/1Mailing List, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-351.htmlVendor Advisory
- 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.comThird Party Advisory
- https://www.debian.org/security/2020/dsa-4804Mailing List, Third Party Advisory
- https://www.zdnet.com/article/new-platypus-attack-can-steal-data-from-intel-cpus/Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-351.htmlPatch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.