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Debian: CVE-2021-3697: grub2 -- security update

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Debian: CVE-2021-3697: grub2 -- security update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/06/2022
Created
07/31/2024
Added
07/30/2024
Modified
07/30/2024

Description

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.

Solution(s)

  • debian-upgrade-grub2

References

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