Release Date: | 2022-06-07 |
A crafted JPEG image may lead the JPEG reader to underflow its data pointer, allowing user-controlled data to be written in heap. To a successful to be performed the attacker needs to perform some triage over the heap layout and craft an image with a malicious format and payload. This vulnerability can lead to data corruption and eventual code execution or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
See more information about CVE-2021-3697 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
Base Score: | 7.5 | Base Metrics: | AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
Access Vector: | Local network | Attack Complexity: | High |
Privileges Required: | High | User Interaction: | None |
Scope: | Changed | Confidentiality Impact: | High |
Integrity Impact: | High | Availability Impact: | High |
Platform | Errata | Release Date |
Oracle Linux version 7 (grub2) | ELSA-2022-9469 | 2022-06-07 |
Oracle Linux version 7 (grub2) | ELSA-2023-12952 | 2023-10-27 |
Oracle Linux version 8 (grub2) | ELSA-2022-9471 | 2022-06-07 |
Oracle Linux version 8 (grub2) | ELSA-2022-9595 | 2022-07-14 |
Oracle Linux version 9 (grub2) | ELSA-2022-9596 | 2022-07-14 |
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