Attacker Value
Unknown
CVE-2020-15705
CVE-2020-15705
(Last updated October 07, 2023) ▾
MITRE ATT&CK
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Description
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.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
6.4 Medium
Impact Score:
5.9
Exploitability Score:
0.5
Attack Vector (AV):
Local
Attack Complexity (AC):
High
Privileges Required (PR):
High
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
General Information
Vendors
- canonical,
- debian,
- gnu,
- microsoft,
- opensuse,
- redhat,
- suse
Products
- debian linux 10.0,
- enterprise linux 7.0,
- enterprise linux 8.0,
- enterprise linux atomic host -,
- grub2,
- leap 15.1,
- leap 15.2,
- openshift container platform 4.0,
- suse linux enterprise server 11,
- suse linux enterprise server 12,
- suse linux enterprise server 15,
- ubuntu linux 14.04,
- ubuntu linux 16.04,
- ubuntu linux 18.04,
- ubuntu linux 20.04,
- windows 10 -,
- windows 10 1607,
- windows 10 1709,
- windows 10 1803,
- windows 10 1809,
- windows 10 1903,
- windows 10 1909,
- windows 10 2004,
- windows 8.1 -,
- windows rt 8.1 -,
- windows server 2012 -,
- windows server 2012 r2,
- windows server 2016 -,
- windows server 2016 1903,
- windows server 2016 1909,
- windows server 2016 2004,
- windows server 2019 -
References
Advisory
