CVE-2020-15707
Published: Jul 29, 2020
Modified: Sep 17, 2024
CVSS v3.1
5.7
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.
| Vendor | Product | Versions |
|---|---|---|
Ubuntu | grub2 in Ubuntu | affected 20.04 LTS - < 2.04-1ubuntu26.1affected 18.04 LTS - < 2.02-2ubuntu8.16affected 16.04 LTS - < 2.02~beta2-36ubuntu3.26affected 14.04 ESM - < 2.02~beta2-9ubuntu1.20 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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