vulnerability
Amazon Linux AMI 2: CVE-2022-28736: Security patch for grub2 (ALAS-2023-2146)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:S/C:C/I:C/A:C) | Jul 20, 2023 | Jul 21, 2023 | Jan 30, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
Jul 20, 2023
Added
Jul 21, 2023
Modified
Jan 30, 2025
Description
There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
Solutions
amazon-linux-ami-2-upgrade-grub2amazon-linux-ami-2-upgrade-grub2-commonamazon-linux-ami-2-upgrade-grub2-debuginfoamazon-linux-ami-2-upgrade-grub2-efi-aa64amazon-linux-ami-2-upgrade-grub2-efi-aa64-cdbootamazon-linux-ami-2-upgrade-grub2-efi-aa64-ec2amazon-linux-ami-2-upgrade-grub2-efi-aa64-modulesamazon-linux-ami-2-upgrade-grub2-efi-x64amazon-linux-ami-2-upgrade-grub2-efi-x64-cdbootamazon-linux-ami-2-upgrade-grub2-efi-x64-ec2amazon-linux-ami-2-upgrade-grub2-efi-x64-modulesamazon-linux-ami-2-upgrade-grub2-emuamazon-linux-ami-2-upgrade-grub2-emu-modulesamazon-linux-ami-2-upgrade-grub2-pcamazon-linux-ami-2-upgrade-grub2-pc-modulesamazon-linux-ami-2-upgrade-grub2-toolsamazon-linux-ami-2-upgrade-grub2-tools-efiamazon-linux-ami-2-upgrade-grub2-tools-extraamazon-linux-ami-2-upgrade-grub2-tools-minimal
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