NewStart CGSL CORE 5.05 / MAIN 5.05 : unbound Multiple Vulnerabilities (NS-SA-2021-0142)

high Nessus Plugin ID 154518


The remote NewStart CGSL host is affected by multiple vulnerabilities.


The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has unbound packages installed that are affected by multiple vulnerabilities:

- An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large number of queries directed to a target, even with a lower amplification ratio compared to versions of Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for CVE-2020-12662, and it does not affect upstream versions of Unbound. (CVE-2020-10772)

- Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an NXNSAttack issue. This is triggered by random subdomains in the NSDNAME in NS records. (CVE-2020-12662)

- Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers.

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


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

See Also

Plugin Details

Severity: High

ID: 154518

File Name: newstart_cgsl_NS-SA-2021-0142_unbound.nasl

Version: 1.2

Type: local

Published: 10/27/2021

Updated: 10/27/2021

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-12663


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_core:unbound, p-cpe:/a:zte:cgsl_core:unbound-debuginfo, p-cpe:/a:zte:cgsl_core:unbound-devel, p-cpe:/a:zte:cgsl_core:unbound-libs, p-cpe:/a:zte:cgsl_core:unbound-python, p-cpe:/a:zte:cgsl_main:unbound, p-cpe:/a:zte:cgsl_main:unbound-debuginfo, p-cpe:/a:zte:cgsl_main:unbound-devel, p-cpe:/a:zte:cgsl_main:unbound-libs, p-cpe:/a:zte:cgsl_main:unbound-python, cpe:/o:zte:cgsl_core:5, cpe:/o:zte:cgsl_main:5

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: 5/19/2020

Reference Information

CVE: CVE-2020-10772, CVE-2020-12662, CVE-2020-12663