Detections
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CBL Mariner 2.0 Security Update: grub2 (CVE-2022-2601)

high Nessus Plugin ID 172924

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-2022-2601 advisory.

 - A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph, this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this vulnerability to circumvent the secure boot mechanism. (CVE-2022-2601)

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-2022-2601

Plugin Details

Severity: High

ID: 172924

File Name: mariner_grub2_CVE-2022-2601.nasl

Version: 1.1

Type: local

Published: 3/20/2023

Updated: 8/29/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2022-2601

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.7

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

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

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/13/2022

Vulnerability Publication Date: 11/15/2022

Reference Information

CVE: CVE-2022-2601