NewStart CGSL MAIN 7.02 : squashfs-tools Multiple Vulnerabilities (NS-SA-2025-0192)

high Nessus Plugin ID 242708

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

The remote NewStart CGSL host, running version MAIN 7.02, has squashfs-tools packages installed that are affected by multiple vulnerabilities:

- squashfs_opendir in unsquash-2.c in Squashfs-Tools 4.5 allows Directory Traversal, a different vulnerability than CVE-2021-40153. A squashfs filesystem that has been crafted to include a symbolic link and then contents under the same filename in a filesystem can cause unsquashfs to first create the symbolic link pointing outside the expected directory, and then the subsequent write operation will cause the unsquashfs process to write through the symbolic link elsewhere in the filesystem. (CVE-2021-41072)

- squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used by unsquashfs to create the new file during the unsquash. The filename is not validated for traversal outside of the destination directory, and thus allows writing to locations outside of the destination. (CVE-2021-40153)

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

Plugin Details

Severity: High

ID: 242708

File Name: newstart_cgsl_NS-SA-2025-0192_squashfs-tools.nasl

Version: 1.1

Type: local

Family: NewStart CGSL Local Security Checks

Published: 7/25/2025

Updated: 7/25/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

CVSS Score Source: CVE-2021-41072

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

Vulnerability Information

CPE: p-cpe:/a:zte:cgsl_main:squashfs-tools, cpe:/o:zte:cgsl_main:7

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: 7/25/2025

Vulnerability Publication Date: 8/27/2021

Reference Information

CVE: CVE-2021-40153, CVE-2021-41072

Detections

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