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Debian 10 Buster DLA-3190-1 Critical: Grub2 UEFI Bypass and Code Execution

debian lts
Calendar Grey November 16, 2022
Dist Debian Esm H88
Debian LTS Advisory DLA-3190-1 outlines significant grub2 vulnerabilities that enable UEFI circumvention and potential arbitrary code execution.
Several issues were found in GRUB2's font handling code, which could result in crashes and potentially execution of arbitrary code
Topics%20covered

Topics Covered

security advisory critical issue arbitrary code memory overflow debian buster grub2 code execution uefi bypass

Summary

Further, issues were found in image loading that could potentially
lead to memory overflows.

For Debian 10 buster, these problems have been fixed in version
2.06-3~deb10u2.

We recommend that you upgrade your grub2 packages.

For the detailed security status of grub2 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/grub2

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
critical
Lowest
Low
Medium
High
Critical

Package: grub2
Version: 2.06-3~deb10u2
CVE ID: CVE-2022-2601 CVE-2022-3775

Topics%20covered

Topics Covered

security advisory critical issue arbitrary code memory overflow debian buster grub2 code execution uefi bypass

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