NewStart CGSL MAIN 7.02 : perl-Archive-Tar Multiple Vulnerabilities (NS-SA-2026-0090)

critical Nessus Plugin ID 343579

Synopsis

The remote NewStart CGSL host is affected by multiple vulnerabilities.

Description

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

- Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. _make_special_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target. A subsequent open through the extracted name reads or writes the attacker chosen path. (CVE-2026-42496)

- Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size field in tar header. _read_tar() reads each entry's payload with $handle->read($$data, $block), where $block is derived from the entry's 12-byte size field in the tar header with no upper bound on that value.
A crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.
(CVE-2026-9538)

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 perl-Archive-Tar packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

Plugin Details

Severity: Critical

ID: 343579

File Name: newstart_cgsl_NS-SA-2026-0090_perl-Archive-Tar.nasl

Version: 1.1

Type: Local

Family: NewStart CGSL Local Security Checks

Published: 9/8/2026

Updated: 9/8/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.41

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-42496

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:zte:cgsl_main:7, p-cpe:/a:zte:cgsl_main:perl-archive-tar-doc, p-cpe:/a:zte:cgsl_main:perl-archive-tar

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: 5/26/2026

Reference Information

CVE: CVE-2026-42496, CVE-2026-9538

Detections

Analytics