[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/WINGATE-INSECURE-PERMISSIONS-LOCAL-PRIVILEGE-ESCALATION.txt
[+] twitter.com/hyp3rlinx
[+] ISR: ApparitionSec
[Vendor]
wingate.com
[Product]
WinGate v9.4.1.5998
WinGate is a sophisticated integrated Internet gateway and
communications server designed to meet the control,
security and email needs of today's Internet-connected
businesses.
[Vulnerability Type]
Insecure Permissions EoP
[CVE Reference]
CVE-2020-13866
[Security Issue]
WinGate has insecure permissions for the installation directory,
which allows local
users ability to gain privileges by replacing an executable file
with a Trojan horse.
The WinGate directory hands (F) full control to authenticated
users, who can then run
arbitrary code as SYSTEM after a WinGate restart or system
reboot.
C:\Program Files\WinGate>cacls WinGate.exe
C:\Program Files\WinGate\WinGate.exe NT AUTHORITY\Authenticated
Users:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Administrators:(ID)F
BUILTIN\Users:(ID)R
APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(ID)R
APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION
PACKAGES:(ID)R
[Affected Component]
WinGate Installation Directory
[Impact Code execution]
true
[Impact Denial of Service]
true
[Impact Escalation of Privileges]
true
[Impact Information Disclosure]
true
[Exploit/POC]
Logon as standard user replace WinGate.exe with a trojan
executable, wait for restart or reboot the system, your code runs
as SYSTEM.
[Network Access]
Local
[Severity]
High
[Disclosure Timeline]
Vendor Notification: May 10, 2020
Vendor acknowledgement: May 10, 2020
Vulnerability confirmed: May 18, 2020
Request status: May 22, 2020
No reply
Notify vendor request CVE: May 26, 2020
No reply
Advised of public disclosure: June 1, 2020
No reply
June 4, 2020 : Public Disclosure
[+] Disclaimer
The information contained within this advisory is supplied "as-is"
with no warranties or guarantees of fitness of use or
otherwise.
Permission is hereby granted for the redistribution of this
advisory, provided that it is not altered except by reformatting
it, and
that due credit is given. Permission is explicitly given for
insertion in vulnerability databases and similar, provided that due
credit
is given to the author. The author is not responsible for any
misuse of the information contained herein and accepts no
responsibility
for any damage caused by the use or misuse of this information. The
author prohibits any malicious use of security related
information
or exploits by the author or elsewhere. All content (c).
hyp3rlinx
