CVE-2018-11479

The VPN component in Windscribe 1.81 uses the OpenVPN client for connections. Also, it creates a WindScribeService.exe system process that establishes a \\.\pipe\WindscribeService named pipe endpoint that allows the Windscribe VPN process to connect and execute an OpenVPN process or other processes (like taskkill, etc.). There is no validation of the program name before constructing the lpCommandLine argument for a CreateProcess call. An attacker can run any malicious process with SYSTEM privileges through this named pipe.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://sqlulz.blogspot.com/2018/05/windscribe-vpn-privilege-escalation.html	Third Party Advisory
http://packetstormsecurity.com/files/156222/Windscribe-WindscribeService-Named-Pipe-Privilege-Escalation.html

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Configurations

Configuration 1 (hide)

cpe:2.3:a:windscribe:windscribe:1.81:*:*:*:*:*:*:*

Information

Published : 2018-05-25 12:29

Updated : 2020-02-05 13:15

NVD link : CVE-2018-11479

Mitre link : CVE-2018-11479

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

windscribe

windscribe

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