CVE-2021-3418
Vulnerability from cvelistv5
Published
2021-03-15 21:17
Modified
2024-08-03 16:53
Severity ?
Summary
If certificates that signed grub are installed into db, grub can be booted directly. It will then boot any kernel without signature validation. The booted kernel will think it was booted in secureboot mode and will implement lockdown, yet it could have been tampered. This flaw is a reintroduction of CVE-2020-15705 and only affects grub2 versions prior to 2.06 and upstream and distributions using the shim_lock mechanism.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1933757Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1933757Issue Tracking, Third Party Advisory
Impacted products
Vendor Product Version
n/a grub2 Version: Fixed in 2.06
Show details on NVD website

To clipboard 

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