medium6.4
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 whil…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Gnu | Grub2 | through 2.04 |
| Redhat | Enterprise Linux Atomic Host | All versions |
| Redhat | Openshift Container Platform | Version 4.0 |
| Canonical | Ubuntu Linux | Versions 14.04, 16.04, 18.04, 20.04 |
| Debian | Debian Linux | Version 10.0 |
| Redhat | Enterprise Linux | Versions 7.0, 8.0 |
| Suse | Suse Linux Enterprise Server | Versions 11, 12, 15 |
| Microsoft | Windows 10 | All versions Versions 1607, 1709, 1803, 1809, 1903 |
| Microsoft | Windows 8.1 | All versions |
| Microsoft | Windows Rt 8.1 | All versions |
| Microsoft | Windows Server 2012 | All versions Version r2 |
| Microsoft | Windows Server 2016 | All versions Versions 1903, 1909, 2004 |
Weakness classification
References
- NVD record
- CVE.org record
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
- http://ubuntu.com/security/notices/USN-4432-1
- http://www.openwall.com/lists/oss-security/2020/07/29/3
- https://access.redhat.com/security/vulnerabilities/grub2bootloader
- https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011
- https://security.gentoo.org/glsa/202104-05
- https://security.netapp.com/advisory/ntap-20200731-0008/
- https://usn.ubuntu.com/4432-1/
- https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass
- https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot
- https://www.debian.org/security/2020/dsa-4735
- https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
- https://www.openwall.com/lists/oss-security/2020/07/29/3
- https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/
- https://www.suse.com/support/kb/doc/?id=000019673
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
- http://ubuntu.com/security/notices/USN-4432-1
- http://www.openwall.com/lists/oss-security/2020/07/29/3
- https://access.redhat.com/security/vulnerabilities/grub2bootloader
- https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011
- https://security.gentoo.org/glsa/202104-05