CVE-2023-45896: Permission Flaw (CVSS 7.1)

Description

ntfs3 in the Linux kernel through 6.8.0 allows a physically proximate attacker to read kernel memory by mounting a filesystem (e.g., if a Linux distribution is configured to allow unprivileged mounts of removable media) and then leveraging local access to trigger an out-of-bounds read. A length value can be larger than the amount of memory allocated. NOTE: the supplier's perspective is that there is no vulnerability when an attack requires an attacker-modified filesystem image.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-276 Incorrect Default Permissions

References

Other References

https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.11 https://dfir.ru/2024/06/19/vulnerabilities-in-7-zip-and-ntfs3/ https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=013ff63b649475f0ee134e2c8d0c8e65284ede50 https://github.com/torvalds/linux/commit/013ff63b649475f0ee134e2c8d0c8e65284ede50 https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2023-45896? +

ntfs3 in the Linux kernel through 6.8.0 allows a physically proximate attacker to read kernel memory by mounting a filesystem (e.g., if a Linux distribution is configured to allow unprivileged mounts of removable media) and then leveraging local access to trigger an out-of-bounds read. A length value can be larger than the amount of memory allocated. NOTE: the supplier's perspective is that there is no vulnerability when an attack requires an attacker-modified filesystem image. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2023-45896? +

CVE-2023-45896 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2023-45896? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2023-45896