CVE-2023-4692
High
Description
An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code execution and secure boot protection bypass may be achieved.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Gnu Grub2
PublishedOct 25, 2023
First seenOct 25, 2023
Weakness typeCWE-122CWE-122
How to fix
Update
- gnu grub22.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu grub2 | v < 2.12 | 2.12 |
| redhat enterprise_linux | 8.0, 9.0 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.