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CBL Mariner 2.0 Security Update: shim / shim-unsigned-x64 (CVE-2023-40550)

medium Nessus Plugin ID 207039

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of shim / shim-unsigned-x64 installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-40550 advisory.

 - An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue May expose sensitive data during the system's boot phase. (CVE-2023-40550)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2023-40550

Plugin Details

Severity: Medium

ID: 207039

File Name: mariner_CVE-2023-40550.nasl

Version: 1.1

Type: local

Published: 9/12/2024

Updated: 9/12/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2023-40550

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: x-cpe:/o:microsoft:cbl-mariner, p-cpe:/a:microsoft:cbl-mariner:shim, p-cpe:/a:microsoft:cbl-mariner:shim-unsigned-x64

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/CBLMariner/release, Host/CBLMariner/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/10/2024

Vulnerability Publication Date: 1/29/2024

Reference Information

CVE: CVE-2023-40550