VULNERABILITY

Gentoo Linux: CVE-2021-3696: GRUB: Multiple Vulnerabilities

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Gentoo Linux: CVE-2021-3696: GRUB: Multiple Vulnerabilities

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
07/06/2022
Created
09/26/2022
Added
09/26/2022
Modified
09/26/2022

Description

A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.

Solution(s)

  • gentoo-linux-upgrade-sys-boot-grub

References

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