NewStart CGSL MAIN 6.02 : grub2 Multiple Vulnerabilities (NS-SA-2024-0068)

high Nessus Plugin ID 206830

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

The remote NewStart CGSL host, running version MAIN 6.02, has grub2 packages installed that are affected by multiple vulnerabilities:

- A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong permission set allowing non privileged users to read its content. This represents a low severity confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg.
(CVE-2021-3981)

- A flaw was found in grub2 when handling IPv4 packets. This flaw allows an attacker to craft a malicious packet, triggering an integer underflow in grub code. Consequently, the memory allocation for handling the packet data may be smaller than the size needed. This issue causes an out-of-bands write during packet handling, compromising data integrity, confidentiality issues, a denial of service, and remote code execution. (CVE-2022-28733)

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

Solution

Upgrade the vulnerable CGSL grub2 packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

Plugin Details

Severity: High

ID: 206830

File Name: newstart_cgsl_NS-SA-2024-0068_grub2.nasl

Version: 1.1

Type: local

Family: NewStart CGSL Local Security Checks

Published: 9/10/2024

Updated: 9/10/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2021-3981

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/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

CVSS Score Source: CVE-2022-28733

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_main:grub2-tools-efi, cpe:/o:zte:cgsl_main:6, p-cpe:/a:zte:cgsl_main:grub2-efi-x64-modules, p-cpe:/a:zte:cgsl_main:grub2-pc, p-cpe:/a:zte:cgsl_main:grub2-tools-extra, p-cpe:/a:zte:cgsl_main:grub2-tools-minimal, p-cpe:/a:zte:cgsl_main:grub2-pc-modules, p-cpe:/a:zte:cgsl_main:grub2-efi-x64, p-cpe:/a:zte:cgsl_main:grub2-common, p-cpe:/a:zte:cgsl_main:grub2-tools

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/3/2024

Vulnerability Publication Date: 7/30/2020

Reference Information

CVE: CVE-2021-3981, CVE-2022-28733

Detections

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