CVE-2018-11479

EPSS 9.9%

Vexday Risk Score

38Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Functional exploit

Automatable exploit available (Nuclei/Metasploit).

CVSS —EPSS 9.9%KEV nãoPoC públicaNuclei —Metasploit simPatch —

Lifecycle

24 May 2018Metasploit module available

25 May 2018Published on NVD

07 Feb 2020Public PoC

Weaponization speed

622 daysto first PoC

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

Affected products

n/a · n/a

public PoCs found — 2

cve_referencepacketstormsecurity.com/files/156222/Windscribe-WindscribeService-Named-Pipe-Privilege-Escalation.htmlunverified exploitdbwww.exploit-db.com/exploits/48021unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

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