7.5
HIGH
CVE-2020-14372
Grub2 Secure Boot SSDT Overwrite Vulnerability
Description

A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability.

INFO

Published Date :

March 3, 2021, 5:15 p.m.

Last Modified :

Nov. 21, 2024, 5:03 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

6.0

Exploitability Score :

0.8
Public PoC/Exploit Available at Github

CVE-2020-14372 has a 26 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-2020-14372 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
2 Redhat enterprise_linux_workstation
3 Redhat enterprise_linux_server_aus
4 Redhat enterprise_linux_server_eus
5 Redhat enterprise_linux_server_tus
1 Netapp ontap_select_deploy_administration_utility
2 Netapp cloud_backup
1 Fedoraproject fedora
1 Gnu grub2
: Total Affected Vendor : 4 | Products : 9
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-2020-14372.

URL Resource
https://access.redhat.com/security/vulnerabilities/RHSB-2021-003 Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1873150 Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/
https://security.gentoo.org/glsa/202104-05 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210416-0004/ Third Party Advisory
https://access.redhat.com/security/vulnerabilities/RHSB-2021-003 Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1873150 Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/
https://security.gentoo.org/glsa/202104-05 Third Party Advisory
https://security.netapp.com/advisory/ntap-20210416-0004/ 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 month, 1 week 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: 2 months, 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: 3 weeks, 6 days 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: 4 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/shim-review

None

Updated: 7 months ago
0 stars 0 fork 0 watcher
Born at : May 17, 2024, 8:53 p.m. This repo has been linked 24 different CVEs too.
Profile Photo
ctrliq/ciq-shim-build

None

Dockerfile Shell

Updated: 7 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: 6 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: 11 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, 2 months 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
neppe/shim-review

None

Updated: 1 year, 6 months ago
0 stars 0 fork 0 watcher
Born at : May 28, 2023, 10:13 a.m. This repo has been linked 24 different CVEs too.
Profile Photo
lenovo-lux/shim-review

None

Dockerfile Makefile

Updated: 10 months, 2 weeks ago
1 stars 0 fork 0 watcher
Born at : Dec. 14, 2022, 11:14 p.m. This repo has been linked 24 different CVEs too.
Profile Photo
ozun215/shim-review

None

Dockerfile

Updated: 1 year, 8 months ago
0 stars 0 fork 0 watcher
Born at : July 15, 2022, 6:34 a.m. This repo has been linked 22 different CVEs too.
Profile Photo
EuroLinux/shim-review

None

Dockerfile

Updated: 2 years, 5 months ago
0 stars 0 fork 0 watcher
Born at : July 2, 2022, 8:27 p.m. This repo has been linked 24 different CVEs too.
Profile Photo
soosmile/POC

None

Updated: 5 months, 3 weeks ago
8 stars 1 fork 1 watcher
Born at : June 21, 2022, 7:45 a.m. This repo has been linked 943 different CVEs too.
Profile Photo
mwti/rescueshim

None

Updated: 2 years, 7 months ago
0 stars 0 fork 0 watcher
Born at : May 8, 2022, 12:58 p.m. This repo has been linked 14 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-2020-14372 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-14372 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/security/vulnerabilities/RHSB-2021-003
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1873150
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/
    Added Reference https://security.gentoo.org/glsa/202104-05
    Added Reference https://security.netapp.com/advisory/ntap-20210416-0004/
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/
  • Modified Analysis by [email protected]

    Jul. 22, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ Mailing List, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/202104-05 No Types Assigned https://security.gentoo.org/glsa/202104-05 Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210416-0004/ No Types Assigned https://security.netapp.com/advisory/ntap-20210416-0004/ Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 01, 2021

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202104-05 [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 23, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 16, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210416-0004/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 11, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:H/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
    Changed Reference Type https://access.redhat.com/security/vulnerabilities/RHSB-2021-003 No Types Assigned https://access.redhat.com/security/vulnerabilities/RHSB-2021-003 Patch, Third Party Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1873150 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1873150 Issue Tracking, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* versions up to (excluding) 2.06
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:8.1:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
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-2020-14372 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-2020-14372 weaknesses.

Exploit Prediction

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

0.04 }} 0.00%

score

0.12065

percentile

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