CVE-2020-28368

Advisory lineage Upstream: 0 Downstream: 25
Modified
Published: 10 Nov 2020, 18:17
Last modified:04 Aug 2024, 16:33

Vulnerability Summary

Overall Risk (default)
low
18/100
CVSS Score
4.4 MEDIUM
v3.1 (nvd)
EPSS Score
0.07% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

10 Nov 2020, 18:17
Published
Vulnerability first disclosed
04 Aug 2024, 16:33
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.07%• Percentile: 21%

Techniques & Countermeasures

  • CWE-862•Missing Authorization

    The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Affected Systems

  • debian•debian_linux

    10.0

  • fedoraproject•fedora

    32

  • xen•xen

    ≤ 4.14.0

References (8)