CVE-2024-45780

low-risk
Published 2025-03-03

A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.7/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Gnu

References (3)

Third Party Advisory https://access.redhat.com/security/cve/CVE-2024-45780
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2345856
Mailing List https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal