#VU104091 Heap-based buffer overflow in grub - CVE-2024-56737

Vulnerability identifier: #VU104091

Vulnerability risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56737

CWE-ID: CWE-122

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
grub
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the fs/hfs.c when reading sblock data from HFS filesystem. A local user can trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.

Mitigation
Install update from vendor's website.

Vulnerable software versions

grub: 2.00 - 2.12

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External links
https://savannah.gnu.org/bugs/?66599

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.