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CVE-2025-0624

Published: February 19, 2025Last modified: June 2, 2025

Description

A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grub_strcpy() function. During this step, it fails to consider the environment variable length when allocating the internal buffer, resulting in an out-of-bounds write. If correctly exploited, this issue may result in remote code execution through the same network segment grub is searching for the boot information, which can be used to by-pass secure boot protections.

Severity score breakdown

ParameterValue
Base score7.6
Attack VectorADJACENT_NETWORK
Attack complexityHIGH
Privileges requiredHIGH
User interactionNONE
ScopeCHANGED
ConfidentialityHIGH
Integrity impactHIGH
Availability impactHIGH
VectorCVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Status

ProductReleasePackageStatus
Alpaquita Linux23 LTSgrubFixed (2.12-r8)
StreamgrubFixed (2.12-r10)

References

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