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.
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References
History
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-04T23:24:39.226Z
Reserved: 2019-06-02T00:00:00
Link: CVE-2019-12578
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Status : Modified
Published: 2019-07-11T20:15:13.193
Modified: 2024-11-21T04:23:07.753
Link: CVE-2019-12578
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