Homepage
About Snyk

Buffer Overflow Affecting grub2-x86_64-efi package, versions <2.04-9.7.1

0.0
high

Snyk CVSS

    Attack Complexity Low
    Privileges Required High
    Scope Changed
    Confidentiality High
    Integrity High
    Availability High
Expand this section
NVD
8.2 high
Expand this section
SUSE
8.2 high
Expand this section
Red Hat
8.2 high

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-SLES152-GRUB2X8664EFI-2705965
  • published 14 Apr 2022
  • disclosed 29 Jul 2020
Report a new vulnerability Found a mistake?

Introduced: 29 Jul 2020

CVE-2020-10713 Open this link in a new tab
CWE-120 Open this link in a new tab

How to fix?

Upgrade SLES:15.2 grub2-x86_64-efi to version 2.04-9.7.1 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, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.