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CVE-2020-15706 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink 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/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://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://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 
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://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://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://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.gentoo.org/glsa/202104-05 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20200731-0008/ Third Party Advisory 
https://security.netapp.com/advisory/ntap-20200731-0008/ Third Party Advisory 
https://usn.ubuntu.com/4432-1/ Third Party Advisory 
https://usn.ubuntu.com/4432-1/ Third Party Advisory 
https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass 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-GRUB-UEFI-SecureBoot Third Party Advisory 
https://www.debian.org/security/2020/dsa-4735 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.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.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/c/suse-addresses-grub2-secure-boot-issue/ Third Party Advisory 
https://www.suse.com/support/kb/doc/?id=000019673 Third Party Advisory 
https://www.suse.com/support/kb/doc/?id=000019673 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST   Canonical Ltd.  
CWE-416 Use After Free cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

11 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-15706
NVD Published Date:
07/29/2020
NVD Last Modified:
11/21/2024
Source:
Canonical Ltd.