Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-6462.json
JSON Data
https://api.test.osv.dev/v1/vulns/AZL-6462
Upstream
Published
2021-03-03T17:15:11Z
Modified
2026-04-01T05:20:49.077690Z
Severity
  • 7.6 (High) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
CVE-2020-25647 affecting package grub2 for versions less than 2.06~rc1-7
Details

A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

Affected packages

Azure Linux:2 / grub2

Package

Name
grub2
Purl
pkg:rpm/azure-linux/grub2

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.06~rc1-7

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-6462.json"