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

Several issues were found in GRUB2's font handling code, which could result in crashes and potentially execution of arbitrary code. These could lead to by-pass of UEFI Secure Boot on affected systems. . - ------------------------------------------------------------------------- Debian LTS Advisory DLA-3190-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/lts/security/ Steve McIntyre November 16, 2022 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : grub2 Version : 2.06-3~deb10u2 CVE ID : CVE-2022-2601 CVE-2022-3775 Several issues were found in GRUB2's font handling code, which could result in crashes and potentially execution of arbitrary code. These could lead to by-pass of UEFI Secure Boot on affected systems. 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 . Debian LTS Advisory DLA-3190-1 outlines significant grub2 vulnerabilities that enable UEFI circumvention and potential arbitrary code execution.. Debian Security, Grub2 Update, UEFI Bypass, Memory Management, Code Execution. . Severity: Critical. LinuxSecurity.com Team

Nov 16, 2022 •Critical Debian LTS