CVE-2020-10713 Memory corruption in Grub
An attacker with physical or network access can exploit a buffer overflow in GRUB to bypass Secure Boot and execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-10713?
CVE-2020-10713 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 30 Jul 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Weakness: CWE-120
Which versions are affected by CVE-2020-10713?
It affects 4 products.
Linux distribution packages (23)
shim SUSE:Enterprise Storage 5 | All versions | 15+git47-25.11.1 |
shim SUSE:HPE Helion OpenStack 8 | All versions | 15+git47-25.11.1 |
shim SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 15+git47-7.15.1 |
shim SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 15+git47-7.15.1 |
shim SUSE:Linux Enterprise Module for Basesystem 15 SP1 | All versions | 15+git47-3.8.1 |
shim SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 15+git47-3.8.1 |
shim SUSE:Linux Enterprise Server 11 SP4-LTSS | All versions | 15+git47-12.5.1 |
shim SUSE:Linux Enterprise Server 12 SP2-BCL | All versions | 15+git47-22.8.1 |
shim SUSE:Linux Enterprise Server 12 SP2-LTSS | All versions | 15+git47-22.8.1 |
shim SUSE:Linux Enterprise Server 12 SP3-BCL | All versions | 15+git47-25.11.1 |
shim SUSE:Linux Enterprise Server 12 SP3-LTSS | All versions | 15+git47-25.11.1 |
shim SUSE:Linux Enterprise Server 12 SP4-LTSS | All versions | 15+git47-25.11.1 |
shim SUSE:Linux Enterprise Server 12 SP5 | All versions | 15+git47-25.11.1 |
shim SUSE:Linux Enterprise Server for SAP Applications 12 SP2 | All versions | 15+git47-22.8.1 |
shim SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 15+git47-25.11.1 |
shim SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 15+git47-25.11.1 |
shim SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 15+git47-25.11.1 |
shim SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 15+git47-7.15.1 |
shim SUSE:OpenStack Cloud 7 | All versions | 15+git47-22.8.1 |
shim SUSE:OpenStack Cloud 8 | All versions | 15+git47-25.11.1 |
shim SUSE:OpenStack Cloud 9 | All versions | 15+git47-25.11.1 |
shim SUSE:OpenStack Cloud Crowbar 8 | All versions | 15+git47-25.11.1 |
shim SUSE:OpenStack Cloud Crowbar 9 | All versions | 15+git47-25.11.1 |
Products include Debian Debian Linux, Gnu Grub2, Opensuse Leap, Vmware Photon Os.
How do I fix CVE-2020-10713?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-10713 being exploited?
There is no known exploitation of CVE-2020-10713 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2020-10713, AZL-6455, DEBIAN-CVE-2020-10713, GHSA-m2fm-gm84-v5jq, SUSE-SU-2020:14490-1, SUSE-SU-2020:2626-1 and 4 more.