CVE-2020-28368medium
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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.
References
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
Details
Source: MITRE
Published: 2020-11-10
Updated: 2022-01-01
Type: CWE-862
Risk Information
CVSS v2
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
CVSS v3
Base Score: 4.4
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 0.8
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions up to 4.14.0 (inclusive)
Configuration 2
OR
Configuration 3
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 150513 | SUSE SLES11 Security Update : xen (SUSE-SU-2020:14557-1) | Nessus | SuSE Local Security Checks | high |
| 149227 | SUSE SLES15 Security Update : xen (SUSE-SU-2021:1460-1) | Nessus | SuSE Local Security Checks | high |
| 148365 | SUSE SLES12 Security Update : xen (SUSE-SU-2021:1023-1) | Nessus | SuSE Local Security Checks | high |
| 144102 | SUSE SLES12 Security Update : xen (SUSE-SU-2020:3742-1) | Nessus | SuSE Local Security Checks | high |
| 143881 | SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2020:3413-1) | Nessus | SuSE Local Security Checks | medium |
| 143878 | SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2020:3615-1) | Nessus | SuSE Local Security Checks | high |
| 143861 | SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2020:3611-1) | Nessus | SuSE Local Security Checks | high |
| 143824 | SUSE SLES12 Security Update : xen (SUSE-SU-2020:3653-1) | Nessus | SuSE Local Security Checks | high |
| 143703 | SUSE SLES12 Security Update : xen (SUSE-SU-2020:3415-1) | Nessus | SuSE Local Security Checks | medium |
| 143698 | SUSE SLES12 Security Update : xen (SUSE-SU-2020:3414-1) | Nessus | SuSE Local Security Checks | medium |
| 143675 | SUSE SLES12 Security Update : xen (SUSE-SU-2020:3612-1) | Nessus | SuSE Local Security Checks | medium |
| 143674 | SUSE SLES12 Security Update : xen (SUSE-SU-2020:3631-1) | Nessus | SuSE Local Security Checks | high |
| 143625 | SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2020:3412-1) | Nessus | SuSE Local Security Checks | medium |
| 143538 | openSUSE Security Update : xen (openSUSE-2020-2192) | Nessus | SuSE Local Security Checks | high |
| 143506 | openSUSE Security Update : xen (openSUSE-2020-2162) | Nessus | SuSE Local Security Checks | high |
| 143500 | Debian DSA-4804-1 : xen - security update | Nessus | Debian Local Security Checks | high |
| 143397 | Fedora 33 : xen (2020-d71fa5f0b9) | Nessus | Fedora Local Security Checks | medium |
| 143301 | openSUSE Security Update : xen (openSUSE-2020-2030) | Nessus | SuSE Local Security Checks | medium |
| 143298 | openSUSE Security Update : xen (openSUSE-2020-2017) | Nessus | SuSE Local Security Checks | medium |
| 143139 | Fedora 32 : xen (2020-2684e0fadd) | Nessus | Fedora Local Security Checks | medium |
| 142889 | Xen Platypus information leak via power sidechannel (XSA-351) | Nessus | Misc. | medium |