SB2023080205 - Software-based power side-channel attack on AMD CPUs

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Main Vulnerability Database SB2023080205

SB2023080205 - Software-based power side-channel attack on AMD CPUs

Published: August 2, 2023

Security Bulletin ID SB2023080205
CSH Severity
Low
Patch available
NO
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper restriction of software interfaces to hardware features (CVE-ID: CVE-2023-20583)

CWE-ID: CWE-1256 - Improper restriction of software interfaces to hardware features

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to the way data in a cache line changes over time. A local user can monitor the CPU power consumption and potentially gain access to sensitive information using software-based power side channels.


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References