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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2022-07-06T15:06:43

Updated: 2024-08-03T17:01:08.303Z

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

Link: CVE-2021-3696

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-07-06T16:15:08.270

Modified: 2023-09-13T16:15:41.777

Link: CVE-2021-3696

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-06-07T00:00:00Z

Links: CVE-2021-3696 - Bugzilla