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Uplay 92.0.0.6280 Local Privilege Escalation

Uplay 92.0.0.6280 Local Privilege Escalation
Posted Oct 14, 2019
Authored by Pongtorn Angsuchotmetee, Kusol Watchara-Apanukorn, Manich Koomsusi

Uplay version 92.0.0.6280 suffers from a local privilege escalation vulnerability.

tags | exploit, local
MD5 | ea5c9317378eaa521cf89c8d29612e31

Uplay 92.0.0.6280 Local Privilege Escalation

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# Exploit Title: Uplay 92.0.0.6280 - Local Privilege Escalation
# Date: 2019-08-07
# Exploit Author: Kusol Watchara-Apanukorn, Pongtorn Angsuchotmetee, Manich Koomsusi
# Vendor Homepage: https://uplay.ubisoft.com/
# Version: 92.0.0.6280
# Tested on: Windows 10 x64
# CVE : N/A

# Vulnerability Description: "C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher" has in secure permission
# that allows all BUILTIN-USER has full permission. An attacker replace the
# vulnerability execute file with malicious file.

///////////////////////
Proof of Concept
///////////////////////

C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher>icacls "C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher"
C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher BUILTIN\Users:(F)
BUILTIN\Users:(OI)(CI)(IO)(F)
NT SERVICE\TrustedInstaller:(I)(F)
NT SERVICE\TrustedInstaller:(I)(CI)(IO)(F)
NT AUTHORITY\SYSTEM:(I)(F)
NT AUTHORITY\SYSTEM:(I)(OI)(CI)(IO)(F)
BUILTIN\Administrators:(I)(F)
BUILTIN\Administrators:(I)(OI)(CI)(IO)(F)
BUILTIN\Users:(I)(RX)
BUILTIN\Users:(I)(OI)(CI)(IO)(GR,GE)
CREATOR OWNER:(I)(OI)(CI)(IO)(F)
APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(RX)
APPLICATION PACKAGE AUTHORITY\ALL APPLICATION PACKAGES:(I)(OI)(CI)(IO)(GR,GE)
APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(RX)
APPLICATION PACKAGE AUTHORITY\ALL RESTRICTED APPLICATION PACKAGES:(I)(OI)(CI)(IO)(GR,GE)




Vulnerability Disclosure Timeline:
==================================
07 Aug, 19 : Found Vulnerability
07 Aug, 19 : Vendor Notification
14 Aug, 19 : Vendor Response
18 Sep, 19 : Vendor Fixed
18 Sep, 19 : Vendor released new patched
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