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.
References
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: redhat

Published: 2022-07-06T15:06:47

Updated: 2022-09-30T15:06:20

Reserved: 2021-08-10T00:00:00


Link: CVE-2021-3697

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2022-07-06T16:15:08.320

Modified: 2023-09-13T16:15:06.283


Link: CVE-2021-3697

JSON object: View

cve-icon Redhat Information

No data.

CWE