VulnerabilityModified
CVE-2023-4693
An out-of-bounds read flaw was found on grub2's NTFS filesystem driver.
MEDIUM 4.6EPSS 0.50%
Does this matter?
Lower severity and a low EPSS score (0.50%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.6 MEDIUMCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.50% probability · 41th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- gnu/grub2 · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2024:2456
- https://access.redhat.com/errata/RHSA-2024:3184
- 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://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.htmlMailing List
- https://seclists.org/oss-sec/2023/q4/37Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:2456
- https://access.redhat.com/errata/RHSA-2024:3184
- 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://lists.debian.org/debian-lts-announce/2023/10/msg00007.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/
- https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.htmlMailing List
- https://seclists.org/oss-sec/2023/q4/37Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202311-14
- https://security.netapp.com/advisory/ntap-20231208-0002/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.