VULNERABILITY INTELLIGENCE
CVE-2020-15707
CVSS score5.7 MEDIUM
EPSS probability1.59%
CISA KEVNot currently listed
Published2020-07-29
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
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.
Weakness classification
- security@ubuntu.com: CWE-362
- nvd@nist.gov: CWE-190
Primary references
- security@ubuntu.com — Mailing List, Third Party Advisory
- security@ubuntu.com — Mailing List, Third Party Advisory
- security@ubuntu.com — Third Party Advisory
- security@ubuntu.com — Mailing List, Third Party Advisory
- security@ubuntu.com — Third Party Advisory
- security@ubuntu.com — Issue Tracking, Vendor Advisory
- security@ubuntu.com — Patch, Third Party Advisory, Vendor Advisory
- security@ubuntu.com — Third Party Advisory
- security@ubuntu.com — Third Party Advisory
- security@ubuntu.com — Third Party Advisory
- security@ubuntu.com — Third Party Advisory
- security@ubuntu.com — Third Party Advisory