CVE-2019-20908

Advisory lineage Upstream: 0 Downstream: 19
Modified
Published: 15 Jul 2020, 21:24
Last modified:05 Aug 2024, 02:53

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
6.9 MEDIUM
v2.0 (nvd)
EPSS Score
0.02% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

15 Jul 2020, 21:24
Published
Vulnerability first disclosed
05 Aug 2024, 02:53
Last Modified
Vulnerability information updated

Description

An issue was discovered in drivers/firmware/efi/efi.c in the Linux kernel before 5.4. Incorrect access permissions for the efivar_ssdt ACPI variable could be used by attackers to bypass lockdown or secure boot restrictions, aka CID-1957a85b0032.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.02%• Percentile: 6%

Affected Systems

  • canonical•ubuntu_linux

    16.04 | 18.04

  • linux•linux_kernel

    < 5.4

  • opensuse•leap

    15.1

References (13)