CVE-2018-11479
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.).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.90%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 9.90% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- windscribe/windscribe
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/156222/Windscribe-WindscribeService-Named-Pipe-Privilege-Escalation.html
- http://sqlulz.blogspot.com/2018/05/windscribe-vpn-privilege-escalation.htmlThird Party Advisory
- http://packetstormsecurity.com/files/156222/Windscribe-WindscribeService-Named-Pipe-Privilege-Escalation.html
- http://sqlulz.blogspot.com/2018/05/windscribe-vpn-privilege-escalation.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.