CVE-2021-3981 Information

Description

A flaw in grub2 was found where its configuration file known as grub.cfg is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue as those users can eventually read any encrypted passwords present in grub.cfg. This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no version with the fix is currently released.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2024170 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AI776L35DDYPCSAAJPJM3ZEQYSFZHBJX/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

3.3