Rapid7 Vulnerability & Exploit Database

Red Hat: CVE-2021-38578: integer underflow in SmmEntryPoint function leads to potential SMM privilege escalation (Multiple Advisories)

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Red Hat: CVE-2021-38578: integer underflow in SmmEntryPoint function leads to potential SMM privilege escalation (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
03/03/2022
Created
05/15/2023
Added
05/15/2023
Modified
12/15/2023

Description

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

Solution(s)

  • redhat-upgrade-edk2-aarch64
  • redhat-upgrade-edk2-debugsource
  • redhat-upgrade-edk2-ovmf
  • redhat-upgrade-edk2-tools
  • redhat-upgrade-edk2-tools-debuginfo
  • redhat-upgrade-edk2-tools-doc

References

  • CVE-2021-38578
  • RHSA-2023:2165

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;