There's a possible overflow in handle_image() when shim tries to load and execute crafted EFI executables; The handle_image() function takes into account the SizeOfRawData field from each section to be loaded. An attacker can leverage this to perform out-of-bound writes into memory. Arbitrary code execution is not discarded in such scenario.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published: 2023-07-20T00:26:15.627Z

Updated: 2024-08-03T06:03:52.700Z

Reserved: 2022-04-05T21:59:08.761Z

Link: CVE-2022-28737

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-07-20T01:15:10.473

Modified: 2023-07-28T15:33:58.493

Link: CVE-2022-28737

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-06-07T17:00:00Z

Links: CVE-2022-28737 - Bugzilla