CVE-2023-6764

Severity Score

8.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

A format string vulnerability in a function of the IPSec VPN feature in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, and USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1 could allow an attacker to achieve unauthorized remote code execution by sending a sequence of specially crafted payloads containing an invalid pointer; however, such an attack would require detailed knowledge of an affected device’s memory layout and configuration.

Una vulnerabilidad de cadena de formato en una función de la función VPN IPSec en las versiones de firmware de la serie Zyxel ATP de 4.32 a 5.37 Parche 1, versiones de firmware de la serie USG FLEX de 4.50 a 5.37 Parche 1, versiones de firmware de la serie USG FLEX 50(W) de 4.16 a 5.37 El parche 1 y las versiones de firmware de la serie USG20(W)-VPN desde 4.16 hasta 5.37. El parche 1 podría permitir a un atacante lograr la ejecución remota no autorizada de código enviando una secuencia de payloads especialmente manipulados que contengan un puntero no válido; sin embargo, un ataque de este tipo requeriría un conocimiento detallado del diseño y la configuración de la memoria del dispositivo afectado.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Complete

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2023-12-13 CVE Reserved
2024-02-20 CVE Published
2024-02-20 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-134: Use of Externally-Controlled Format String

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024	2024-02-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Zyxel Search vendor "Zyxel"		Atp Firmware Search vendor "Zyxel" for product "Atp Firmware"				*		-		Affected
Zyxel Search vendor "Zyxel"		Usg 20w-vpn Firmware Search vendor "Zyxel" for product "Usg 20w-vpn Firmware"				*		-		Affected
Zyxel Search vendor "Zyxel"		Usg Flex 50w Firmware Search vendor "Zyxel" for product "Usg Flex 50w Firmware"				*		-		Affected
Zyxel Search vendor "Zyxel"		Usg Flex Firmware Search vendor "Zyxel" for product "Usg Flex Firmware"				*		-		Affected