Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Londontrustmedia | Private Internet Access Vpn Client | 82 |
| Linux | Linux Kernel | - |
Related Weaknesses (CWE)
References
- https://github.com/mirchr/security-research/blob/master/vulnerabilities/PIA/CVE-ExploitThird Party Advisory
- https://github.com/mirchr/security-research/blob/master/vulnerabilities/PIA/CVE-ExploitThird Party Advisory
FAQ
What is CVE-2019-12578?
CVE-2019-12578 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 openvp...
How severe is CVE-2019-12578?
CVE-2019-12578 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-12578?
Check the references section above for vendor advisories and patch information. Affected products include: Londontrustmedia Private Internet Access Vpn Client, Linux Linux Kernel.