CVE Published: 29/07/2020 |
CVE Updated: 17/09/2024 |
CVE Year: 2020 Source: canonical |
Vendor: Ubuntu |
Product: grub2 in Ubuntu Status : PUBLISHED
CVE-2020-15707 Description
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
Metrics
CVSS Version: 3.1 |
Base Score: 5.7 MEDIUM Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
l➤ Exploitability Metrics: Attack Vector (AV)* LOCAL Attack Complexity (AC)* HIGH Privileges Required (PR)* HIGH User Interaction (UI)* NONE Scope (S)* UNCHANGED
l➤ Impact Metrics: Confidentiality Impact (C)* NONE Integrity Impact (I)* HIGH Availability Impact (A)* HIGH
Weakness Enumeration (CWE)
CWE-ID: CWE-362 CWE Name: CWE-362 Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization) Source: Ubuntu
Common Attack Pattern Enumeration and Classification (CAPEC)