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CBL Mariner 2.0 Security Update: grub2 (CVE-2022-3775)

high Nessus Plugin ID 201643

Synopsis

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

Description

The version of grub2 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-2022-3775 advisory.

 - When rendering certain unicode sequences, grub2's font code doesn't proper validate if the informed glyph's width and height is constrained within bitmap size. As consequence an attacker can craft an input which will lead to a out-of-bounds write into grub2's heap, leading to memory corruption and availability issues. Although complex, arbitrary code execution could not be discarded. (CVE-2022-3775)

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-2022-3775

Plugin Details

Severity: High

ID: 201643

File Name: mariner_CVE-2022-3775.nasl

Version: 1.1

Type: local

Published: 7/3/2024

Updated: 7/3/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2022-3775

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

Vulnerability Information

CPE: p-cpe:/a:microsoft:cbl-mariner:grub2-efi-binary, p-cpe:/a:microsoft:cbl-mariner:grub2-efi-binary-noprefix, x-cpe:/o:microsoft:cbl-mariner, p-cpe:/a:microsoft:cbl-mariner:grub2-efi-unsigned, p-cpe:/a:microsoft:cbl-mariner:grub2, p-cpe:/a:microsoft:cbl-mariner:grub2-pc, p-cpe:/a:microsoft:cbl-mariner:grub2-efi

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: 7/1/2024

Vulnerability Publication Date: 11/15/2022

Reference Information

CVE: CVE-2022-3775