CVE-2020-15706

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-15706
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.

6.4 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:L/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Broken Link Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Broken Link Mailing List Third Party Advisory
http://ubuntu.com/security/notices/USN-4432-1 Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List Third Party Advisory
https://access.redhat.com/security/vulnerabilities/grub2bootloader Third Party Advisory
https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html Issue Tracking Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 Patch Third Party Advisory Vendor Advisory
https://security.gentoo.org/glsa/202104-05 Third Party Advisory
https://security.netapp.com/advisory/ntap-20200731-0008/ Third Party Advisory
https://usn.ubuntu.com/4432-1/ Third Party Advisory
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass Third Party Advisory
https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot Third Party Advisory
https://www.debian.org/security/2020/dsa-4735 Third Party Advisory
https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/29/3 Mailing List Third Party Advisory
https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/ Third Party Advisory
https://www.suse.com/support/kb/doc/?id=000019673 Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*

Configuration 2 (hide)

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:10.0:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*

Configuration 3 (hide)

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:-:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

Configuration 5 (hide)

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:*:*:*
History

16 Nov 2022, 03:58

Type Values Removed Values Added
References (CONFIRM) https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 - Third Party Advisory (CONFIRM) https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011 - Patch, Third Party Advisory, Vendor Advisory
References (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html - (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html - Broken Link, Mailing List, Third Party Advisory
References (UBUNTU) https://usn.ubuntu.com/4432-1/ - (UBUNTU) https://usn.ubuntu.com/4432-1/ - Third Party Advisory
References (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html - (SUSE) http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html - Broken Link, Mailing List, Third Party Advisory
References (GENTOO) https://security.gentoo.org/glsa/202104-05 - (GENTOO) https://security.gentoo.org/glsa/202104-05 - Third Party Advisory
CPE cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
First Time Opensuse leap
Opensuse

01 May 2021, 02:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202104-05 -
Information

Published : 2020-07-29 18:15

Updated : 2023-12-10 13:27

NVD link : CVE-2020-15706

Mitre link : CVE-2020-15706

CVE.ORG link : CVE-2020-15706

JSON object : View

Products Affected

microsoft

  • windows_server_2016
  • windows_8.1
  • windows_server_2019
  • windows_10
  • windows_rt_8.1
  • windows_server_2012

suse

  • suse_linux_enterprise_server

gnu

  • grub2

redhat

  • enterprise_linux_atomic_host
  • enterprise_linux
  • openshift_container_platform

opensuse

  • leap

debian

  • debian_linux

canonical

  • ubuntu_linux
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-416

Use After Free