// For flags

CVE-2019-12577

 

Severity Score

7.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the London Trust Media Private Internet Access (PIA) VPN Client v82 for macOS could allow an authenticated, local attacker to run arbitrary code with elevated privileges. The macOS binary openvpn_launcher.64 is setuid root. This binary creates /tmp/pia_upscript.sh when executed. Because the file creation mask (umask) is not reset, the umask value is inherited from the calling process. This value can be manipulated to cause the privileged binary to create files with world writable permissions. A local unprivileged user can modify /tmp/pia_upscript.sh during the connect process to execute arbitrary code as the root user.

Una vulnerabilidad en el cliente VPN de Private Internet Access (PIA) de London Trust Media para macOS, podría permitir a un atacante local autenticado ejecutar código arbitrario con privilegios elevados. El binario de macOS openvpn_launcher.64 es root setuid. Este binario crea el archivo /tmp/pia_upscript.sh cuando es ejecutado. Dado que la máscara de creación de archivos (umask) no se restablece, el valor umask se hereda del proceso de llamada. Este valor se puede manipular para causar que el binario con privilegios cree archivos con permisos de escritura mundial. Un usuario local sin privilegios puede modificar el archivo /tmp/pia_upscript.sh durante el proceso de conexión para ejecutar código arbitrario como el usuario root.

*Credits: N/A
CVSS Scores
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-732: Incorrect Permission Assignment for Critical Resource
CAPEC
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 Apple
Search vendor "Apple"
 Macos
Search vendor "Apple" for product "Macos"
--
Safe