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Improper Verification of Cryptographic Signature Affecting grub2 package, versions <2.04-9.15.1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High
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NVD
6.4 medium
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SUSE
7.8 high
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Red Hat
6.4 medium

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  • Snyk ID SNYK-SLES152-GRUB2-2703896
  • published 14 Apr 2022
  • disclosed 25 Aug 2020
Report a new vulnerability Found a mistake?

Introduced: 25 Aug 2020

CVE-2020-15705 Open this link in a new tab
CWE-347 Open this link in a new tab

How to fix?

Upgrade SLES:15.2 grub2 to version 2.04-9.15.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2 package and not the grub2 package as distributed by SLES:15.2. See How to fix? for SLES:15.2 relevant fixed versions and status.

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.