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NewStart CGSL MAIN 7.02 : brotli Vulnerability (NS-SA-2026-0038)

high Nessus Plugin ID 304048

Synopsis

The remote NewStart CGSL host is affected by a vulnerability.

Description

The remote NewStart CGSL host, running version MAIN 7.02, has brotli packages installed that are affected by a vulnerability:

 - Scrapy versions up to 2.13.2 are vulnerable to a denial of service (DoS) attack due to a flaw in its brotli decompression implementation. The protection mechanism against decompression bombs fails to mitigate the brotli variant, allowing remote servers to crash clients with less than 80GB of available memory. This occurs because brotli can achieve extremely high compression ratios for zero-filled data, leading to excessive memory consumption during decompression. (CVE-2025-6176)

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

See Also

https://security.gd-linux.com/notice/NS-SA-2026-0038

https://security.gd-linux.com/info/CVE-2025-6176

Plugin Details

Severity: High

ID: 304048

File Name: newstart_cgsl_NS-SA-2026-0038_brotli.nasl

Version: 1.1

Type: local

Published: 3/28/2026

Updated: 3/28/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2025-6176

CVSS v3

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_main:libbrotli, p-cpe:/a:zte:cgsl_main:brotli-doc, p-cpe:/a:zte:cgsl_main:python3-brotli, p-cpe:/a:zte:cgsl_main:libbrotli-core, cpe:/o:zte:cgsl_main:7, p-cpe:/a:zte:cgsl_main:brotli, p-cpe:/a:zte:cgsl_main:brotli-devel

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: 3/27/2026

Vulnerability Publication Date: 10/31/2025

Reference Information

CVE: CVE-2025-6176

IAVA: 2025-A-0813