6.4

CVE-2020-15705

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.

Data is provided by the National Vulnerability Database (NVD)
Gnu ≫ Grub2 Version <= 2.04
Canonical ≫ Ubuntu Linux Version14.04 SwEditionesm
Canonical ≫ Ubuntu Linux Version16.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version18.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version20.04 SwEditionlts
Debian ≫ Debian Linux Version10.0
Opensuse ≫ Leap Version15.1
Opensuse ≫ Leap Version15.2
Redhat ≫ Enterprise Linux Version7.0
Redhat ≫ Enterprise Linux Version8.0
Microsoft ≫ Windows 10 Version-
Microsoft ≫ Windows 10 Version1607
Microsoft ≫ Windows 10 Version1709
Microsoft ≫ Windows 10 Version1803
Microsoft ≫ Windows 10 Version1809
Microsoft ≫ Windows 10 Version1903
Microsoft ≫ Windows 10 Version1909
Microsoft ≫ Windows 10 Version2004
Microsoft ≫ Windows 8.1 Version-
Microsoft ≫ Windows Rt 8.1 Version-
Microsoft ≫ Windows Server 2016 Version1903
Microsoft ≫ Windows Server 2016 Version1909
Microsoft ≫ Windows Server 2016 Version2004
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.03% 0.082
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 6.4 0.5 5.9
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 4.4 3.4 6.4
AV:L/AC:M/Au:N/C:P/I:P/A:P
security@ubuntu.com 6.4 0.5 5.9
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-347 Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

https://usn.ubuntu.com/4432-1/
Third Party Advisory