CVE-2019-12571 Information

Description

A vulnerability in the London Trust Media Private Internet Access (PIA) VPN Client v0.9.8 beta (build 02099) for macOS could allow an authenticated local attacker to overwrite arbitrary files. When the client initiates a connection the XML /tmp/pia-watcher.plist file is created. If the file exists it will be truncated and the contents completely overwritten. This file is removed on disconnect. An unprivileged user can create a hard or soft link to arbitrary files owned by any user on the system including root. This creates a denial of service condition and possible data loss if leveraged by a malicious local user.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Reference

https://github.com/mirchr/security-research/blob/master/vulnerabilities/PIA/CVE-2019-12571.txt

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.1