7.2
CVSSv2

CVE-2019-12572

Published: 21/06/2019 Updated: 24/08/2020
CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9
CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8
VMScore: 641
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Summary

A vulnerability in the London Trust Media Private Internet Access (PIA) VPN Client 1.0.2 (build 02363) for Windows could allow an authenticated, local malicious user to run arbitrary code with elevated privileges. On startup, the PIA Windows service (pia-service.exe) loads the OpenSSL library from %PROGRAMFILES%\Private Internet Access\libeay32.dll. This library attempts to load the C:\etc\ssl\openssl.cnf configuration file which does not exist. By default on Windows systems, authenticated users can create directories under C:\. A low privileged user can create a C:\etc\ssl\openssl.cnf configuration file to load a malicious OpenSSL engine library resulting in arbitrary code execution as SYSTEM when the service starts.

Vulnerability Trend

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londontrustmedia private_internet_access 1.0.2

Github Repositories

A Windows utility to check for potential insecure paths used by the OPENSSLDIR build parameter in OpenSSL libraries

openssldir_check A Windows utility written in C++ to check for potential insecure paths used by the OPENSSLDIR build parameter in OpenSSL libraries Applications that bundle OpenSSL libraries may have OPENSSLDIR set to a path that could be writable from a low privileged user account Depending on how the application is written, it may automatically load OPENSSLDIR/opensslcnf