CVE-2020-15706
GRUB2 Use After Free Arbitrary Code Execution Vulnerability
Description
GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.
INFO
Published Date :
July 29, 2020, 6:15 p.m.
Last Modified :
Nov. 16, 2022, 3:58 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.5
Public PoC/Exploit Available at Github
CVE-2020-15706 has a 12 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-2020-15706
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-2020-15706.
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).
shim-review but not forked to be able to use LFS
Dockerfile Shell
None
Dockerfile
None
Dockerfile Makefile
None
Dockerfile
None
Dockerfile Shell
None
Dockerfile
Repository for all information needed for shim-review
Dockerfile
shim-review for Navix
Dockerfile
None
PowerShell
None
Reviews of shim
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-15706 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-15706 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 -
Modified Analysis by [email protected]
Nov. 16, 2022
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Broken Link, Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Broken Link, Mailing List, Third Party Advisory Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 Third Party Advisory https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 Patch, Third Party Advisory, Vendor 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://usn.ubuntu.com/4432-1/ No Types Assigned https://usn.ubuntu.com/4432-1/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* -
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] -
CPE Deprecation Remap by [email protected]
Aug. 18, 2020
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 08, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html [No Types Assigned] Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html [No Types Assigned] -
CVE Modified by [email protected]
Aug. 04, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4432-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 03, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://ubuntu.com/security/notices/USN-4432-1 No Types Assigned http://ubuntu.com/security/notices/USN-4432-1 Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2020/07/29/3 No Types Assigned http://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List, Third Party Advisory Changed Reference Type https://access.redhat.com/security/vulnerabilities/grub2bootloader No Types Assigned https://access.redhat.com/security/vulnerabilities/grub2bootloader Third Party Advisory Changed Reference Type https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html No Types Assigned https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html Issue Tracking, Vendor Advisory Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20200731-0008/ No Types Assigned https://security.netapp.com/advisory/ntap-20200731-0008/ Third Party Advisory Changed Reference Type https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass No Types Assigned https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4735 No Types Assigned https://www.debian.org/security/2020/dsa-4735 Third Party Advisory Changed Reference Type https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot No Types Assigned https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot Third Party Advisory Changed Reference Type https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ No Types Assigned https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2020/07/29/3 No Types Assigned https://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List, Third Party Advisory Changed Reference Type https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ No Types Assigned https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ Third Party Advisory Changed Reference Type https://www.suse.com/support/kb/doc/?id=000019673 No Types Assigned https://www.suse.com/support/kb/doc/?id=000019673 Third Party Advisory Added CWE NIST CWE-362 Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* versions up to (including) 2.04 Added CPE Configuration OR *cpe:2.3:a:redhat:enterprise_linux_atomic_host:-:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* *cpe:2.3:o:debian:debian_linux:10:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:suse:suse_linux_enterprise_server:11:*:*:*:*:*:*:* *cpe:2.3:o:suse:suse_linux_enterprise_server:12:*:*:*:*:*:*:* *cpe:2.3:o:suse:suse_linux_enterprise_server:15:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 31, 2020
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20200731-0008/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 29, 2020
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2020/07/29/3 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 29, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4735 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-15706 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-2020-15706
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.24 }} 0.01%
score
0.61365
percentile