CVE-2020-5180
Last modified
CVE-2020-5180 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Viscosity 1.8.2 on Windows and macOS allows an unprivileged user to set a subset of OpenVPN parameters, which can be used to load a malicious library into the memory of the OpenVPN process, leading 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. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
Viscosity 1.8.2 on Windows and macOS allows an unprivileged user to set a subset of OpenVPN parameters, which can be used to load a malicious library into the memory of the OpenVPN process, leading 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. This greatly reduces the impact of the vulnerability.)
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Sparklabs | Viscosity | 1.8.2 |
References
- https://www.sparklabs.com/blog/viscosity-for-mac-windows-version-1-8-4/Release Notes, Vendor Advisory
- https://www.sparklabs.com/blog/viscosity-for-mac-windows-version-1-8-4/Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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