vulnerability
Red Hat: CVE-2023-40548: shim: Interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:H/Au:N/C:P/I:P/A:C) | 2024-01-29 | 2024-04-17 | 2024-09-03 |
Severity
5
CVSS
(AV:L/AC:H/Au:N/C:P/I:P/A:C)
Published
2024-01-29
Added
2024-04-17
Modified
2024-09-03
Description
A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.
Solution(s)
redhat-upgrade-mokutilredhat-upgrade-mokutil-debuginforedhat-upgrade-shim-ia32redhat-upgrade-shim-unsigned-ia32redhat-upgrade-shim-unsigned-x64redhat-upgrade-shim-x64
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