CVE-2019-15800

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Due to lack of input validation in the cmd_sys_traceroute_exec(), cmd_sys_arp_clear(), and cmd_sys_ping_exec() functions in the libclicmd.so library contained in the firmware, an attacker could leverage these functions to call system() and execute arbitrary commands on the switches. (Note that these functions are currently not called in this version of the firmware, however an attacker could use other vulnerabilities to finally use these vulnerabilities to gain code execution.)

Se descubrió un problema en los dispositivos Zyxel GS1900 con firmware anterior a 2.50 (AAHH.0) C0. Debido a la falta de validación de entrada en las funciones cmd_sys_traceroute_exec (), cmd_sys_arp_clear () y cmd_sys_ping_exec () en la biblioteca libclicmd.so contenida en el firmware, un atacante podría aprovechar estas funciones para llamar al sistema () y ejecutar comandos arbitrarios en los conmutadores . (Tenga en cuenta que estas funciones no se invocan actualmente en esta versión del firmware, sin embargo, un atacante podría usar otras vulnerabilidades para finalmente usar estas vulnerabilidades para obtener la ejecución del código).

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-08-29 CVE Reserved
2019-11-14 CVE Published
2024-02-09 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://jasper.la/exploring-zyxel-gs1900-firmware-with-ghidra.html	2024-08-05

URL	Date	SRC

URL	Date	SRC
https://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtml	2020-08-24

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Zyxel Search vendor "Zyxel"	Gs1900-8 Firmware Search vendor "Zyxel" for product "Gs1900-8 Firmware"	< 2.50\(aahh.0\)c0 Search vendor "Zyxel" for product "Gs1900-8 Firmware" and version " < 2.50\(aahh.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-8 Search vendor "Zyxel" for product "Gs1900-8"	-	-	Safe
Zyxel Search vendor "Zyxel"	Gs1900-8hp Firmware Search vendor "Zyxel" for product "Gs1900-8hp Firmware"	< 2.50\(aahi.0\)c0 Search vendor "Zyxel" for product "Gs1900-8hp Firmware" and version " < 2.50\(aahi.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-8hp Search vendor "Zyxel" for product "Gs1900-8hp"	-	-	Safe
Zyxel Search vendor "Zyxel"	Gs1900-10hp Firmware Search vendor "Zyxel" for product "Gs1900-10hp Firmware"	< 2.50\(aazi.0\)c0 Search vendor "Zyxel" for product "Gs1900-10hp Firmware" and version " < 2.50\(aazi.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-10hp Search vendor "Zyxel" for product "Gs1900-10hp"	-	-	Safe
Zyxel Search vendor "Zyxel"	Gs1900-16 Firmware Search vendor "Zyxel" for product "Gs1900-16 Firmware"	< 2.50\(aahj.0\)c0 Search vendor "Zyxel" for product "Gs1900-16 Firmware" and version " < 2.50\(aahj.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-16 Search vendor "Zyxel" for product "Gs1900-16"	-	-	Safe
Zyxel Search vendor "Zyxel"	Gs1900-24e Firmware Search vendor "Zyxel" for product "Gs1900-24e Firmware"	< 2.50\(aahk.0\)c0 Search vendor "Zyxel" for product "Gs1900-24e Firmware" and version " < 2.50\(aahk.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-24e Search vendor "Zyxel" for product "Gs1900-24e"	-	-	Safe
Zyxel Search vendor "Zyxel"	Gs1900-24 Firmware Search vendor "Zyxel" for product "Gs1900-24 Firmware"	< 2.50\(aahl.0\)c0 Search vendor "Zyxel" for product "Gs1900-24 Firmware" and version " < 2.50\(aahl.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-24 Search vendor "Zyxel" for product "Gs1900-24"	-	-	Safe
Zyxel Search vendor "Zyxel"	Gs1900-24hp Firmware Search vendor "Zyxel" for product "Gs1900-24hp Firmware"	< 2.50\(aahm.0\)c0 Search vendor "Zyxel" for product "Gs1900-24hp Firmware" and version " < 2.50\(aahm.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-24hp Search vendor "Zyxel" for product "Gs1900-24hp"	-	-	Safe
Zyxel Search vendor "Zyxel"	Gs1900-48 Firmware Search vendor "Zyxel" for product "Gs1900-48 Firmware"	< 2.50\(aahn.0\)c0 Search vendor "Zyxel" for product "Gs1900-48 Firmware" and version " < 2.50\(aahn.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-48 Search vendor "Zyxel" for product "Gs1900-48"	-	-	Safe
Zyxel Search vendor "Zyxel"	Gs1900-48hp Firmware Search vendor "Zyxel" for product "Gs1900-48hp Firmware"	< 2.50\(aaho.0\)c0 Search vendor "Zyxel" for product "Gs1900-48hp Firmware" and version " < 2.50\(aaho.0\)c0"	-	Affected	in	Zyxel Search vendor "Zyxel"	Gs1900-48hp Search vendor "Zyxel" for product "Gs1900-48hp"	-	-	Safe