CVE-2020-15706
6.4
MEDIUM
CVSS 3.1
EPSS 0.05%
Description
GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.
How to fix CVE-2020-15706
To remediate CVE-2020-15706, upgrade the affected package to a fixed version below.
- —upgrade to 2.06-r0 or later
- —upgrade to 2.04-9 or later
Is CVE-2020-15706 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.06-r0
- from 0, < 2.04-9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.4 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |