Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2021-3981: A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg.
Fixed packages 19
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | grub2 | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-common | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-debuginfo | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-efi-aa64 | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-efi-aa64-cdboot | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-efi-aa64-ec2 | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-efi-aa64-modules | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-efi-x64 | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-efi-x64-cdboot | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-efi-x64-ec2 | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-efi-x64-modules | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-emu | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-emu-modules | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-pc | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-pc-modules | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-tools | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-tools-efi | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-tools-extra | 1:2.06-9.amzn2.0.1 |
| Amazon Linux · 2 | grub2-tools-minimal | 1:2.06-9.amzn2.0.1 |
Vulnerabilities 1
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Unscored —
A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission s…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-3981.html