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NewStart CGSL CORE 5.05 / MAIN 5.05 : shim Vulnerability (NS-SA-2021-0141)

high Nessus Plugin ID 154505

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Synopsis

The remote NewStart CGSL host is affected by a vulnerability.

Description

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has shim packages installed that are affected by a vulnerability:

 - A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access to the system such as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a networked system with root access. With this access, an attacker could then craft a string to cause a buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-10713)

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

Solution

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

See Also

http://security.gd-linux.com/notice/NS-SA-2021-0141

http://security.gd-linux.com/info/CVE-2020-10713

Plugin Details

Severity: High

ID: 154505

File Name: newstart_cgsl_NS-SA-2021-0141_shim.nasl

Version: 1.3

Type: local

Published: 10/27/2021

Updated: 12/5/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-10713

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_main:shim-unsigned-ia32, p-cpe:/a:zte:cgsl_core:shim-unsigned-x64, cpe:/o:zte:cgsl_main:5, cpe:/o:zte:cgsl_core:5, p-cpe:/a:zte:cgsl_main:shim-unsigned-ia32-debuginfo, p-cpe:/a:zte:cgsl_main:shim-unsigned-x64, p-cpe:/a:zte:cgsl_core:shim-unsigned-x64-debuginfo, p-cpe:/a:zte:cgsl_main:shim-unsigned-x64-debuginfo, p-cpe:/a:zte:cgsl_core:shim-unsigned-ia32-debuginfo, p-cpe:/a:zte:cgsl_core:shim-unsigned-ia32

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2021

Vulnerability Publication Date: 7/29/2020

Reference Information

CVE: CVE-2020-10713

IAVA: 2020-A-0349