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NewStart CGSL CORE 5.04 / MAIN 5.04 : docker-ce Vulnerability (NS-SA-2021-0103)

medium Nessus Plugin ID 154533

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Synopsis

The remote NewStart CGSL host is affected by a vulnerability.

Description

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has docker-ce packages installed that are affected by a vulnerability:

 - In Docker before versions 9.03.15, 20.10.3 there is a vulnerability involving the --userns-remap option in which access to remapped root allows privilege escalation to real root. When using --userns-remap, if the root user in the remapped namespace has access to the host filesystem they can modify files under /var/lib/docker/<remapping> that cause writing files with extended privileges. Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user. (CVE-2021-21284)

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 docker-ce 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-2021-0103

http://security.gd-linux.com/info/CVE-2021-21284

Plugin Details

Severity: Medium

ID: 154533

File Name: newstart_cgsl_NS-SA-2021-0103_docker-ce.nasl

Version: 1.2

Type: local

Published: 10/27/2021

Updated: 10/27/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 2.7

Temporal Score: 2

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

CVSS Score Source: CVE-2021-21284

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_core:docker-ce, p-cpe:/a:zte:cgsl_core:docker-ce-debuginfo, p-cpe:/a:zte:cgsl_main:docker-ce, p-cpe:/a:zte:cgsl_main:docker-ce-debuginfo, 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: 2/2/2021

Reference Information

CVE: CVE-2021-21284