CVE-2019-12578

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the London Trust Media Private Internet Access (PIA) VPN Client v82 for Linux could allow an authenticated, local attacker to run arbitrary code with elevated privileges. The openvpn_launcher.64 binary is setuid root. This binary executes /opt/pia/openvpn-64/openvpn, passing the parameters provided from the command line. Care was taken to programmatically disable potentially dangerous openvpn parameters; however, the --route-pre-down parameter can be used. This parameter accepts an arbitrary path to a script/program to be executed when OpenVPN exits. The --script-security parameter also needs to be passed to allow for this action to be taken, and --script-security is not currently in the disabled parameter list. A local unprivileged user can pass a malicious script/binary to the --route-pre-down option, which will be executed as root when openvpn is stopped.

Una vulnerabilidad en el cliente VPN de Private Internet Access (PIA) de London Trust Media para Linux, podría permitir a un atacante local autenticado ejecutar código arbitrario con privilegios elevados. El binario openvpn_launcher.64 es root setuid. Este binario ejecuta el archivo /opt/pia/openvpn-64/openvpn, pasando los parámetros proporcionados desde la línea de comandos. Se tuvo cuidado de desactivar mediante programación los parámetros openvpn potencialmente peligrosos; sin embargo, puede ser utilizado el parámetro --route-pre-down. Este parámetro acepta una ruta (path) arbitraria en un script/programa que se ejecutará cuando se cierre OpenVPN. El parámetro --script-security también debe pasarse para permitir que se tome esta acción y --script-security no está actualmente en la lista de parámetros deshabilitados. Un usuario local sin privilegios puede pasar un script/binario malicioso a la opción --route-pre-down, que será ejecutado como root cuando se detenga openvpn.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

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:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-06-02 CVE Reserved
2019-07-11 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://github.com/mirchr/security-research/blob/master/vulnerabilities/PIA/CVE-2019-12578.txt	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Londontrustmedia Search vendor "Londontrustmedia"	Private Internet Access Vpn Client Search vendor "Londontrustmedia" for product "Private Internet Access Vpn Client"	82 Search vendor "Londontrustmedia" for product "Private Internet Access Vpn Client" and version "82"	-	Affected	in	Linux Search vendor "Linux"	Linux Kernel Search vendor "Linux" for product "Linux Kernel"	-	-	Safe