CVE-2020-15705: GRUB2: avoid loading unsigned kernels when GRUB is booted directly under secureboot without shim
Ubuntu · grub2 in Ubuntu
Vendor fix available · Affected: Ubuntu grub2 in Ubuntu · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 72% of scored CVEs
DescriptionCVE.org
GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Ubuntu · grub2 in Ubuntufrom 20.04 LTS before 2.04-1ubuntu26.1; from 18.04 LTS before 2.02-2ubuntu8.16; from 16.04 LTS before 2.02~beta2-36ubuntu3.26; from 14.04 ESM before 2.02~beta2-9ubuntu1.20
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
CoverageNo articles yet
No CyberSIXT article names CVE-2020-15705 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-347cwe.mitre.org
- Vendor advisorywiki.ubuntu.com
- Vendor advisoryubuntu.com
- Vendor advisorydebian.org
- Vendor advisoryaccess.redhat.com
- Vendor advisorysuse.com
- Vendor advisorysuse.com
- Vendor advisoryusn.ubuntu.com
- Vendor advisorylists.opensuse.org
- Vendor advisorylists.opensuse.org
- Vendor advisorysecurity.gentoo.org
- eclypsium.com/2020/07/29/theres-a-hole-in-the-booteclypsium.com
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV20portal.msrc.microsoft.com
8 more references are in the CVE record.