Google: sys-boot/shim: security update to 18244.1.7

high Tenable Cloud Security Plugin ID 450542

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- 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. (CVE-2023-40548)

Solution

Update the sys-boot/shim library and its related packages to version 18244.1.7 or later.

Plugin Details

Severity: High

ID: 450542

Version: Revision 1.1

Type: Local

Family: Google COS Security Checks

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.75

Vendor

Vendor Severity: HIGH

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2023-40548

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 1/29/2024

Reference Information

CVE: CVE-2023-40548

Detections

Analytics