Rapid7 Vulnerability & Exploit Database

Red Hat: CVE-2022-3775: Heap based out-of-bounds write when redering certain unicode sequences (Multiple Advisories)

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

Red Hat: CVE-2022-3775: Heap based out-of-bounds write when redering certain unicode sequences (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
12/13/2022
Created
12/15/2022
Added
12/14/2022
Modified
12/15/2023

Description

When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded.

Solution(s)

  • redhat-upgrade-grub2-common
  • redhat-upgrade-grub2-debuginfo
  • redhat-upgrade-grub2-debugsource
  • redhat-upgrade-grub2-efi-aa64-modules
  • redhat-upgrade-grub2-efi-ia32
  • redhat-upgrade-grub2-efi-ia32-cdboot
  • redhat-upgrade-grub2-efi-ia32-modules
  • redhat-upgrade-grub2-efi-x64
  • redhat-upgrade-grub2-efi-x64-cdboot
  • redhat-upgrade-grub2-efi-x64-modules
  • redhat-upgrade-grub2-emu-debuginfo
  • redhat-upgrade-grub2-pc
  • redhat-upgrade-grub2-pc-modules
  • redhat-upgrade-grub2-ppc64le-modules
  • redhat-upgrade-grub2-tools
  • redhat-upgrade-grub2-tools-debuginfo
  • redhat-upgrade-grub2-tools-efi
  • redhat-upgrade-grub2-tools-efi-debuginfo
  • redhat-upgrade-grub2-tools-extra
  • redhat-upgrade-grub2-tools-extra-debuginfo
  • redhat-upgrade-grub2-tools-minimal
  • redhat-upgrade-grub2-tools-minimal-debuginfo

References

  • CVE-2022-3775
  • RHSA-2022:8978
  • RHSA-2023:0047
  • RHSA-2023:0048
  • RHSA-2023:0049
  • RHSA-2023:0752

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

;