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. 7, 2023, 3:17 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 24 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.
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 |
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).
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Dockerfile Shell
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Repository for all information needed for shim-review
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shim-review for Navix
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PowerShell
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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 [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:*:*:*:*:*:*:*
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