Race Condition Affecting grub2-x86_64-efi package, versions <2.04-9.7.1
Snyk CVSS
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-SLES152-GRUB2X8664EFI-2705217
- published 14 Apr 2022
- disclosed 29 Jul 2020
How to fix?
Upgrade SLES:15.2
grub2-x86_64-efi
to version 2.04-9.7.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream grub2-x86_64-efi
package and not the grub2-x86_64-efi
package as distributed by SLES
.
See How to fix?
for SLES:15.2
relevant fixed versions and status.
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.
References
- https://www.suse.com/security/cve/CVE-2020-15706.html
- https://lists.suse.com/pipermail/sle-security-updates/2020-July/007199.html
- https://www.suse.com/support/update/announcement/2020/suse-su-20202074-1/
- https://bugzilla.suse.com/1168994
- https://bugzilla.suse.com/1173812
- https://bugzilla.suse.com/1174463
- https://bugzilla.suse.com/1174570
- https://www.suse.com/security/cve/CVE-2020-10713/
- https://www.suse.com/security/cve/CVE-2020-14308/
- https://www.suse.com/security/cve/CVE-2020-14309/
- https://www.suse.com/security/cve/CVE-2020-14310/
- https://www.suse.com/security/cve/CVE-2020-14311/
- https://www.suse.com/security/cve/CVE-2020-15706/
- https://www.suse.com/security/cve/CVE-2020-15707/
- https://www.suse.com/support/security/rating/
- https://www.suse.com/support/kb/doc/?id=000019673
- http://ubuntu.com/security/notices/USN-4432-1
- https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html
- https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass
- https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200011
- https://access.redhat.com/security/vulnerabilities/grub2bootloader
- https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/
- https://www.suse.com/c/suse-addresses-grub2-secure-boot-issue/
- https://www.openwall.com/lists/oss-security/2020/07/29/3
- https://www.debian.org/security/2020/dsa-4735
- http://www.openwall.com/lists/oss-security/2020/07/29/3
- https://security.netapp.com/advisory/ntap-20200731-0008/
- https://usn.ubuntu.com/4432-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
- https://security.gentoo.org/glsa/202104-05