NewStart CGSL CORE 5.05 / MAIN 5.05 : cloud-init Multiple Vulnerabilities (NS-SA-2021-0151)

high Nessus Plugin ID 154516

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Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

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

- The default cloud-init configuration, in cloud-init 0.6.2 and newer, included ssh_deletekeys: 0, disabling cloud-init's deletion of ssh host keys. In some environments, this could lead to instances created by cloning a golden master or template system, sharing ssh host keys, and being able to impersonate one another or conduct man-in-the-middle attacks. (CVE-2018-10896)

- A security feature bypass exists in Azure SSH Keypairs, due to a change in the provisioning logic for some Linux images that use cloud-init, aka 'Azure SSH Keypairs Security Feature Bypass Vulnerability'.
(CVE-2019-0816)

- cloud-init through 19.4 relies on Mersenne Twister for a random password, which makes it easier for attackers to predict passwords, because rand_str in cloudinit/util.py calls the random.choice function.
(CVE-2020-8631)

- In cloud-init through 19.4, rand_user_password in cloudinit/config/cc_set_passwords.py has a small default pwlen value, which makes it easier for attackers to guess passwords. (CVE-2020-8632)

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 cloud-init packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

Plugin Details

Severity: High

ID: 154516

File Name: newstart_cgsl_NS-SA-2021-0151_cloud-init.nasl

Version: 1.3

Type: local

Family: NewStart CGSL Local Security Checks

Published: 10/27/2021

Updated: 11/27/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 3

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

CVSS Score Source: CVE-2018-10896

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.6

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

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

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_core:cloud-init, p-cpe:/a:zte:cgsl_main:cloud-init, 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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/24/2021

Vulnerability Publication Date: 8/1/2018

Reference Information

CVE: CVE-2018-10896, CVE-2019-0816, CVE-2020-8631, CVE-2020-8632

Detections

Analytics