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NewStart CGSL MAIN 7.02 : ruby Multiple Vulnerabilities (NS-SA-2026-0108)

high Nessus Plugin ID 343568

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

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

 - Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, several Net::IMAP commands accept a raw string argument that is sent to the server without validation or escaping. If this string is derived from user-controlled input, it may contain contain CRLF sequences, which an attacker can use to inject arbitrary IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4. (CVE-2026-42257)

 - Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, Net::IMAP::ResponseReader has quadratic time complexity when reading large responses containing many string literals. A hostile server can send responses which are crafted to exhaust the client's CPU for a denial of service attack. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4. (CVE-2026-42245)

 - Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4, a man-in-the-middle attacker can cause Net::IMAP#starttls to return successfully, without starting TLS. This issue has been patched in versions 0.3.10, 0.4.24, 0.5.14, and 0.6.4. (CVE-2026-42246)

 - Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4. (CVE-2026-42258)

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

See Also

https://security.gd-linux.com/info/CVE-2026-42245

https://security.gd-linux.com/info/CVE-2026-42246

https://security.gd-linux.com/info/CVE-2026-42257

https://security.gd-linux.com/info/CVE-2026-42258

https://security.gd-linux.com/notice/NS-SA-2026-0108

Plugin Details

Severity: High

ID: 343568

File Name: newstart_cgsl_NS-SA-2026-0108_ruby.nasl

Version: 1.1

Type: Local

Published: 9/8/2026

Updated: 9/8/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Percentile: 96.43

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-42257

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS v4

Risk Factor: High

Base Score: 7.6

Threat Score: 4.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-42246

Vulnerability Information

CPE: cpe:/o:zte:cgsl_main:7, p-cpe:/a:zte:cgsl_main:ruby-bundled-gems, p-cpe:/a:zte:cgsl_main:ruby-default-gems, p-cpe:/a:zte:cgsl_main:ruby-devel, p-cpe:/a:zte:cgsl_main:ruby-doc, p-cpe:/a:zte:cgsl_main:ruby-libs, p-cpe:/a:zte:cgsl_main:ruby, p-cpe:/a:zte:cgsl_main:rubygem-bigdecimal, p-cpe:/a:zte:cgsl_main:rubygem-bundler, p-cpe:/a:zte:cgsl_main:rubygem-io-console, p-cpe:/a:zte:cgsl_main:rubygem-irb, p-cpe:/a:zte:cgsl_main:rubygem-json, p-cpe:/a:zte:cgsl_main:rubygem-minitest, p-cpe:/a:zte:cgsl_main:rubygem-power_assert, p-cpe:/a:zte:cgsl_main:rubygem-psych, p-cpe:/a:zte:cgsl_main:rubygem-rake, p-cpe:/a:zte:cgsl_main:rubygem-rbs, p-cpe:/a:zte:cgsl_main:rubygem-rdoc, p-cpe:/a:zte:cgsl_main:rubygem-rexml, p-cpe:/a:zte:cgsl_main:rubygem-rss, p-cpe:/a:zte:cgsl_main:rubygem-test-unit, p-cpe:/a:zte:cgsl_main:rubygem-typeprof, p-cpe:/a:zte:cgsl_main:rubygems-devel, p-cpe:/a:zte:cgsl_main:rubygems

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: 9/7/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-42245, CVE-2026-42246, CVE-2026-42257, CVE-2026-42258

IAVB: 2026-B-0117-S