Zyxel USG FLEX 4.20 < 5.39 DoS

high Nessus Plugin ID 206738

Synopsis

The remote security gateway is affected by a denial of service.

Description

The Firmware version of the Zyxel USG FLEX device is affected by a denial of service vulnerability.
A null pointer dereference vulnerability in some firewall versions could allow an unauthenticated attacker to cause DoS conditions by sending crafted packets to a vulnerable device.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Zyxel USG FLEX to version 5.39 or later.

Plugin Details

Severity: High

ID: 206738

File Name: zyxel_usg_atp_20240903_3.nasl

Version: 1.2

Type: combined

Family: Firewalls

Published: 9/6/2024

Updated: 9/9/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2024-42058

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: cpe:/h:zyxel:usg_flex

Required KB Items: installed_sw/Zyxel Unified Security Gateway (USG)

Exploit Ease: No known exploits are available

Patch Publication Date: 9/3/2024

Vulnerability Publication Date: 9/3/2024

Reference Information

CVE: CVE-2024-42058

IAVA: 2024-A-0534

Detections

Analytics