5.3
MEDIUM
CVE-2023-4693
Grub2 NTFS OOB Read Vulnerability
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.

INFO

Published Date :

Oct. 25, 2023, 6:17 p.m.

Last Modified :

Sept. 16, 2024, 4:15 p.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

4.0

Exploitability Score :

0.8
Public PoC/Exploit Available at Github

CVE-2023-4693 has a 10 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-4693 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux
1 Gnu grub2
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-4693.

URL Resource
https://access.redhat.com/errata/RHSA-2024:2456
https://access.redhat.com/errata/RHSA-2024:3184
https://access.redhat.com/security/cve/CVE-2023-4693 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2238343 Issue 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.html Mailing List
https://seclists.org/oss-sec/2023/q4/37 Mailing List Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
jsegitz/shim-review-nonfork

shim-review but not forked to be able to use LFS

Dockerfile Shell

Updated: 1 week, 3 days ago
0 stars 0 fork 0 watcher
Born at : Nov. 11, 2024, 9:23 a.m. This repo has been linked 28 different CVEs too.
Profile Photo
Fortinetofficial/shim-review

None

Dockerfile

Updated: 1 month, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Oct. 5, 2024, 8:41 a.m. This repo has been linked 28 different CVEs too.
Profile Photo
zeetim/shim-review

None

Dockerfile Makefile

Updated: 2 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : Sept. 6, 2024, 10:39 a.m. This repo has been linked 28 different CVEs too.
Profile Photo
baramundisoftware/ShimReview_2024

None

Dockerfile

Updated: 3 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : May 23, 2024, 1:34 p.m. This repo has been linked 28 different CVEs too.
Profile Photo
ctrliq/ciq-shim-build

None

Dockerfile Shell

Updated: 6 months ago
0 stars 1 fork 1 watcher
Born at : May 17, 2024, 8:46 p.m. This repo has been linked 28 different CVEs too.
Profile Photo
Rodrigo-NR/shim-review

None

Dockerfile

Updated: 5 months, 1 week ago
0 stars 0 fork 0 watcher
Born at : March 4, 2024, 8:25 p.m. This repo has been linked 28 different CVEs too.
Profile Photo
Jurij-Ivastsuk/WAXAR-shim-review

Repository for all information needed for shim-review

Dockerfile

Updated: 10 months ago
0 stars 0 fork 0 watcher
Born at : Jan. 15, 2024, 9:57 a.m. This repo has been linked 28 different CVEs too.
Profile Photo
NaverCloudPlatform/shim-review

shim-review for Navix

Dockerfile

Updated: 1 year, 1 month ago
0 stars 0 fork 0 watcher
Born at : Aug. 28, 2023, 8:02 a.m. This repo has been linked 28 different CVEs too.
Profile Photo
rhboot/shim-review

Reviews of shim

Updated: 3 months, 2 weeks ago
66 stars 112 fork 112 watcher
Born at : Dec. 5, 2017, 7:57 p.m. This repo has been linked 28 different CVEs too.
Profile Photo
vathpela/shim-review

None

Updated: 3 years, 7 months ago
0 stars 1 fork 1 watcher
Born at : Feb. 21, 2017, 2:54 p.m. This repo has been linked 28 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-4693 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-4693 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Sep. 16, 2024

    Action Type Old Value New Value
    Removed Reference Red Hat, Inc. https://security.gentoo.org/glsa/202311-14
    Removed Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20231208-0002/
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/
  • CVE Modified by [email protected]

    May. 22, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:3184 [No types assigned]
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    May. 03, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/PERFILCHFEUGG3OAMC6W55P6DDIBZK4Q/ [No types assigned]
  • CVE Modified by [email protected]

    Apr. 30, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:2456 [No types assigned]
  • CVE Modified by [email protected]

    Apr. 29, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/FUU42E7CPYLATXOYVYNW6YTXXULAOV6L/ [No types assigned]
  • CVE Modified by [email protected]

    Apr. 23, 2024

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/OIRJ5UZRXX2KLR4IKBJEQUNGOCXMMDLY/ [No types assigned]
  • Modified Analysis by [email protected]

    Mar. 08, 2024

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/202311-14 No Types Assigned https://security.gentoo.org/glsa/202311-14 Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20231208-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20231208-0002/ Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:gnu:grub2:-:*:*:*:*:*:*:* OR *cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* versions up to (excluding) 2.12
  • CVE Modified by [email protected]

    Dec. 08, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20231208-0002/ [No types assigned]
  • CVE Modified by [email protected]

    Nov. 25, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://security.gentoo.org/glsa/202311-14 [No types assigned]
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added CWE Red Hat, Inc. CWE-125
  • Initial Analysis by [email protected]

    Nov. 01, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://access.redhat.com/security/cve/CVE-2023-4693 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-4693 Third Party Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2238343 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2238343 Issue Tracking, Third Party Advisory
    Changed Reference Type https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/ No Types Assigned https://dfir.ru/2023/10/03/cve-2023-4692-cve-2023-4693-vulnerabilities-in-the-grub-boot-manager/ Exploit, Third Party Advisory
    Changed Reference Type https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html No Types Assigned https://lists.gnu.org/archive/html/grub-devel/2023-10/msg00028.html Mailing List
    Changed Reference Type https://seclists.org/oss-sec/2023/q4/37 No Types Assigned https://seclists.org/oss-sec/2023/q4/37 Mailing List, Third Party Advisory
    Added CWE NIST CWE-125
    Added CPE Configuration OR *cpe:2.3:a:gnu:grub2:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-4693 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-4693 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.00%

score

0.23990

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: