HIGH 7.8 Microsoft
CVE-2022-28735
The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.
Microsoft Security Update 2023-Jul: The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.
Affected Products
- azl3 grub2 2.06-14 on Azure Linux 3.0
- azl3 grub2 2.06-23 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-28735
- https://nvd.nist.gov/vuln/detail/CVE-2022-28735
This high severity vulnerability with a CVSS score of 7.8 was published on 2023-07-11 via Microsoft. Affected: azl3 grub2 2.06-14 on Azure Linux 3.0, azl3 grub2 2.06-23 on Azure Linux 3.0.
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