CVE-2021-3981
Description
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. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.
Risk Information
Base Score
3.3
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS Score
Exploitation Probability
0.024
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-common-2.02-123.el8.noarch.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-debugsource-2.02-123.el8.x86_64.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-efi-aa64-modules-2.02-123.el8.noarch.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-efi-ia32-2.02-123.el8.x86_64.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-efi-ia32-cdboot-2.02-123.el8.x86_64.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-efi-ia32-modules-2.02-123.el8.noarch.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-efi-x64-cdboot-2.02-123.el8.x86_64.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-ppc64le-modules-2.02-123.el8.noarch.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-tools-2.02-123.el8.x86_64.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-tools-extra-2.02-123.el8.x86_64.rpm | Linux |
| (RHSA-2022:2110) grub2 security, bug fix, and enhancement update grub2-tools-minimal-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-pc-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-tools-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-common-2.02-123.el8.noarch.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-efi-x64-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-efi-ia32-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-tools-efi-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-pc-modules-2.02-123.el8.noarch.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-tools-extra-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-tools-minimal-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-efi-x64-cdboot-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-efi-ia32-cdboot-2.02-123.el8.x86_64.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-efi-x64-modules-2.02-123.el8.noarch.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-efi-aa64-modules-2.02-123.el8.noarch.rpm | Linux |
| grub2 security, bug fix, and enhancement update (RLSA-2022:2110) grub2-efi-ia32-modules-2.02-123.el8.noarch.rpm | Linux |
| GRand Unified Bootloader (USN-6355-1) shim_15.7-0ubuntu1_amd64.deb | Linux |
| GRand Unified Bootloader (USN-6355-1) shim-signed_1.40.9+15.7-0ubuntu1_amd64.deb | Linux |
| GRand Unified Bootloader (USN-6355-1) shim-signed_1.51.3+15.7-0ubuntu1_amd64.deb | Linux |
| GRand Unified Bootloader (USN-6355-1) grub-efi-amd64_2.06-2ubuntu14.1_i386.deb | Linux |
| GRand Unified Bootloader (USN-6355-1) grub-efi-amd64_2.06-2ubuntu14.1_amd64.deb | Linux |
| GRand Unified Bootloader (USN-6355-1) grub-efi-amd64-bin_2.06-2ubuntu14.1_i386.deb | Linux |
| GRand Unified Bootloader (USN-6355-1) grub-efi-amd64-bin_2.06-2ubuntu14.1_amd64.deb | Linux |
| GRand Unified Bootloader (USN-6355-1) grub-efi-amd64-signed_1.187.3~20.04.1+2.06-2ubuntu14.1_amd64.deb | Linux |
| GRand Unified Bootloader (USN-6355-1) grub-efi-amd64-signed_1.187.3~22.04.1+2.06-2ubuntu14.1_amd64.deb | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-common-2.06-61.amzn2023.0.3.noarch.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-efi-aa64-modules-2.06-61.amzn2023.0.3.noarch.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-efi-x64-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-efi-x64-cdboot-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-efi-x64-ec2-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-efi-x64-modules-2.06-61.amzn2023.0.3.noarch.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-emu-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-emu-modules-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-pc-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-pc-modules-2.06-61.amzn2023.0.3.noarch.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-tools-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-tools-efi-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-tools-extra-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
| grub2 Security Update (ALAS2023-2023-020) grub2-tools-minimal-2.06-61.amzn2023.0.3.x86_64.rpm | Linux |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234