CVE-2021-20225

CVE Details

Release Date:2021-03-03

Description


A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

See more information about CVE-2021-20225 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 6.7 Base Metrics: AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Access Vector: Local network Attack Complexity: Low
Privileges Required: High User Interaction: None
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: High Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 7 (grub2)ELSA-2021-06992021-03-05
Oracle Linux version 7 (grub2)ELSA-2021-90762021-03-02
Oracle Linux version 8 (grub2)ELSA-2021-06962021-03-05
Oracle Linux version 8 (grub2)ELSA-2021-90772021-03-02



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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