CVE-2023-4693
Last modified
CVE-2023-4693 is a medium-severity vulnerability rated 4.6/10 on the CVSS scale. An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. EPSS estimates a 0.50% chance of exploitation in the next 30 days.
Description
An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting a high Confidentiality risk.
Metrics
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Grub2 | < 2.12 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
References
- https://access.redhat.com/security/cve/CVE-2023-4693Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2238343Issue Tracking, Third Party Advisory
- https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/Exploit, Third Party Advisory
- https://seclists.org/oss-sec/2023/q4/37Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4693Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2238343Issue Tracking, Third Party Advisory
- https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/Exploit, Third Party Advisory
- https://seclists.org/oss-sec/2023/q4/37Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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