Vulnerability Details : CVE-2021-3981

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.
Published 2022-03-10 17:43:15
Updated 2024-01-16 01:15:34
Source Red Hat, Inc.
View at NVD,   CVE.org

Products affected by CVE-2021-3981

Exploit prediction scoring system (EPSS) score for CVE-2021-3981

EPSS FAQ
0.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 12 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-3981

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
2.1
 LOW AV:L/AC:L/Au:N/C:P/I:N/A:N
3.9
2.9
 NIST
3.3
 LOW CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
1.8
1.4
 NIST

CWE ids for CVE-2021-3981

  • During installation, installed file permissions are set to allow anyone to modify those files.
    Assigned by:
    • nvd@nist.gov (Secondary)
    • secalert@redhat.com (Primary)

References for CVE-2021-3981

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