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Out-of-bounds Write Affecting grub2-x86_64-efi package, versions <2.04-9.34.1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High
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NVD
7.6 high
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SUSE
7.6 high
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Red Hat
7.6 high

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  • Snyk ID SNYK-SLES152-GRUB2X8664EFI-2687008
  • published 14 Apr 2022
  • disclosed 2 Mar 2021
Report a new vulnerability Found a mistake?

Introduced: 2 Mar 2021

CVE-2020-25647 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade SLES:15.2 grub2-x86_64-efi to version 2.04-9.34.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-x86_64-efi package and not the grub2-x86_64-efi package as distributed by SLES:15.2. See How to fix? for SLES:15.2 relevant fixed versions and status.

A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.