Skip to content

Rootfs Not Protected

Moderate
eriknordmark published GHSA-5h7v-g49c-h887 Feb 4, 2026

Package

github.com/lf-edge/eve/pkg/grub

Affected versions

< 8.6.0 and < 8.12.1-lts

Patched versions

8.6.0 and 8.12.1-lts

Description

Impact

Measured boot validates BIOS, grub, kernel cmdline, and initrd but not the entire rootfs.

Thus an attacker can create an EVE-OS rootfs squashfs image with some files modified and take out the disk and replace the existing rootfs image without that being detected by measure boot and remote attestation.

Patches

Fixed in 8.6.0 and 8.12.1-lts

Workarounds

None

References

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Physical
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

CVE ID

CVE-2023-43636

Weaknesses

Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. Learn more on MITRE.