CVE-2025-0678
Grub2 Squash4 Integer Overflow RCE
Description
A flaw was found in grub2. When reading data from a squash4 filesystem, grub's squash4 fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciously crafted filesystem may lead some of those buffer size calculations to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result, the direct_read() will perform a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution, by-passing secure boot protections.
INFO
Published Date :
March 3, 2025, 5:15 p.m.
Last Modified :
March 25, 2025, 5:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2025-0678
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-0678.
| URL | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-0678 | Broken Link |
| https://bugzilla.redhat.com/show_bug.cgi?id=2346118 | Issue Tracking |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-0678 vulnerability anywhere in the article.
-
BleepingComputer
Microsoft uses AI to find flaws in GRUB2, U-Boot, Barebox bootloaders
Microsoft used its AI-powered Security Copilot to discover 20 previously unknown vulnerabilities in the GRUB2, U-Boot, and Barebox open-source bootloaders. GRUB2 (GRand Unified Bootloader) is the defa ... Read more
The following table lists the changes that have been made to the
CVE-2025-0678 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
Mar. 25, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Removed CVSS V3.1 AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H -
CVE Modified by [email protected]
Mar. 21, 2025
Action Type Old Value New Value Added CWE CWE-190 Removed CWE CWE-787 -
Initial Analysis by [email protected]
Mar. 07, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-190 Added CPE Configuration OR *cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* versions from (including) 2.12 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Added Reference Type Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2025-0678 Types: Broken Link Added Reference Type Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2346118 Types: Issue Tracking -
New CVE Received by [email protected]
Mar. 03, 2025
Action Type Old Value New Value Added Description A flaw was found in grub2. When reading data from a squash4 filesystem, grub's squash4 fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciously crafted filesystem may lead some of those buffer size calculations to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result, the direct_read() will perform a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution, by-passing secure boot protections. Added CVSS V3.1 AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added Reference https://access.redhat.com/security/cve/CVE-2025-0678 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2346118
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-0678 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-0678
weaknesses.