CVE-2019-1839

Cisco Remote PHY Device Software Command Injection Vulnerability

Severity Score

6.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

A vulnerability in Cisco Remote PHY Device Software could allow an authenticated, local attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability occurs because the affected software improperly sanitizes user-supplied input. An attacker who has valid administrator access to an affected device could exploit this vulnerability by supplying various CLI commands with crafted arguments. A successful exploit could allow the attacker to run arbitrary commands as the root user, allowing complete compromise of the system.

Una vulnerabilidad en el software del dispositivo Cisco Remote PHY podría permitir que un atacante local autenticado ejecute comandos en el shell Linux subyacente de un dispositivo afectado con privilegios de root. La vulnerabilidad se produce porque el software afectado desinfecta incorrectamente las entradas proporcionadas por el usuario. Un atacante que tenga acceso válido de administrador a un dispositivo afectado podría aprovechar esta vulnerabilidad al proporcionar varios comandos CLI con argumentos diseñados. Un exploit exitoso podría permitir al atacante ejecutar comandos arbitrarios como usuario root, lo que permitiría un compromiso total del sistema.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-08-21 CVE Published
2023-03-08 EPSS Updated
2024-11-20 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-rphy	2020-10-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Remote Phy 120 Firmware Search vendor "Cisco" for product "Remote Phy 120 Firmware"	< 6.4 Search vendor "Cisco" for product "Remote Phy 120 Firmware" and version " < 6.4"	-	Affected	in	Cisco Search vendor "Cisco"	Remote Phy 120 Search vendor "Cisco" for product "Remote Phy 120"	-	-	Safe
Cisco Search vendor "Cisco"	Remote Phy 220 Firmware Search vendor "Cisco" for product "Remote Phy 220 Firmware"	< 3.1 Search vendor "Cisco" for product "Remote Phy 220 Firmware" and version " < 3.1"	-	Affected	in	Cisco Search vendor "Cisco"	Remote Phy 220 Search vendor "Cisco" for product "Remote Phy 220"	-	-	Safe
Cisco Search vendor "Cisco"	Remote Phy Shelf 7200 Firmware Search vendor "Cisco" for product "Remote Phy Shelf 7200 Firmware"	< 1.2 Search vendor "Cisco" for product "Remote Phy Shelf 7200 Firmware" and version " < 1.2"	-	Affected	in	Cisco Search vendor "Cisco"	Remote Phy Shelf 7200 Search vendor "Cisco" for product "Remote Phy Shelf 7200"	-	-	Safe
Cisco Search vendor "Cisco"	Cbr-8 Firmware Search vendor "Cisco" for product "Cbr-8 Firmware"	1.1 Search vendor "Cisco" for product "Cbr-8 Firmware" and version "1.1"	-	Affected	in	Cisco Search vendor "Cisco"	Cbr-8 Search vendor "Cisco" for product "Cbr-8"	-	-	Safe
Cisco Search vendor "Cisco"	Cbr-8 Firmware Search vendor "Cisco" for product "Cbr-8 Firmware"	6.1 Search vendor "Cisco" for product "Cbr-8 Firmware" and version "6.1"	-	Affected	in	Cisco Search vendor "Cisco"	Cbr-8 Search vendor "Cisco" for product "Cbr-8"	-	-	Safe
Cisco Search vendor "Cisco"	Cbr-8 Firmware Search vendor "Cisco" for product "Cbr-8 Firmware"	6.2 Search vendor "Cisco" for product "Cbr-8 Firmware" and version "6.2"	-	Affected	in	Cisco Search vendor "Cisco"	Cbr-8 Search vendor "Cisco" for product "Cbr-8"	-	-	Safe