CWE Code: 264
Vulnerability Type: privilege_escalation
CVSS Score: 7.2
CWE Name:  Permissions Privileges and Access Controls
Summary: 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.
Access Authentication: NONE
Access Complexity: LOW
Access Vector: LOCAL
Impact (C/I/A): COMPLETE/COMPLETE/COMPLETE
Published Date: 2019-07-11
Last Modified Date: 2019-07-16