Attacker Value
Moderate
(1 user assessed)
Exploitability
Very High
(1 user assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Local
0

CVE-2019-17387

Disclosure Date: December 05, 2019
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

An authentication flaw in the AVPNC_RP service in Aviatrix VPN Client through 2.2.10 allows an attacker to gain elevated privileges through arbitrary code execution on Windows, Linux, and macOS.

Add Assessment

1
Ratings
Technical Analysis

VPN clients are commonly found on laptops for remote office workers, This is a local priv esc on all Aviatrix VPN Clients. As it is local it would need either a malicious user or an attacker with User level access looking to escalate.

When the VPN client starts it creates a locally running Web service. This service is capable of running commands in the context of the service, which runs as Root / Admin level permissions.

The service uses a set of certificates to authenticate the web service, however these certificates are included in a compiled python executable, it is it trivial to recover these certificated and therefore execute commands to gain elevated privileges.

https://immersivelabs.com/2019/12/04/aviatrix-vpn-client-vulnerability/

CVSS V3 Severity and Metrics
Base Score:
7.8 High
Impact Score:
5.9
Exploitability Score:
1.8
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • aviatrix

Products

  • vpn client

Additional Info

Technical Analysis