PT-2020-18286
CVE-2020-5180
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Published
2020-01-14
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Updated
2021-09-08
Description by
CVSS 3.1
7.8
HighMetricsAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions
Viscosity version 1.8.2
Description
The issue allows an unprivileged user to set certain OpenVPN parameters, potentially loading a malicious library into the OpenVPN process memory. This can lead to limited local privilege escalation. When a VPN connection is initiated using a TLS/SSL client profile, the privileges are dropped, and the library will be loaded, resulting in arbitrary code execution as a user with limited privileges.
Recommendations
For Viscosity version 1.8.2, consider restricting the ability of unprivileged users to set OpenVPN parameters until a patch is available. As a temporary workaround, avoid using TLS/SSL client profiles for VPN connections to minimize the risk of exploitation.
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