HP TouchSmart Calendar 4.1.4245 – Insecure File Permissions Privilege Escalation

• Exploit Database
• 16 阅读

• 作者： hyp3rlinx
  日期： 2016-10-27
• 类别：

  • local
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/40636/

• [+] Credits: John Page aka hyp3rlinx
  
  [+] Website: hyp3rlinx.altervista.org
  
  [+] Source:http://hyp3rlinx.altervista.org/advisories/HP-TOUCHSMART-CALENDAR-PRIVILEGE-ESCALATION.txt
  
  [+] ISR: ApparitionSec
  
  
  
  Vendor:
  ==========
  www.hp.com
  
  
  
  Product:
  ===========================================
  Hewlett Packard TouchSmart Calendar Service
  File version : 4.1.4245
  
  HP TouchSmart Calendar is a shared calendar where you can manage your family’s schedule. You can also view scheduled events for today
  and tomorrow, e-mail calendar events with Google mail, and print your schedule.
  
  
  
  Vulnerability Type:
  =====================
  Privilege Escalation
  
  
  
  CVE Reference:
  ==============
  N/A
  
  
  
  Vulnerability Details:
  =====================
  
  HP Calendar Service uses weak insecure permissions settings on its files/directory as the “Everyone” group has full access on it.
  Allowing low privileged users to execute arbitrary code in the security context of ANY other users with elevated privileges
  on the affected system.
  
  Any user (even guest) will be able to replace, modify or change the file. This would allow an attacker the ability to inject code
  or replace the "HPTouchSmartSyncCalReminderApp.exe" executable and have it run in the context of the system.
  
  
  Proof... 
  
  c:\Windows\System32>sc query "HP Support Assistant Service"
  
  SERVICE_NAME: HP Support Assistant Service
  TYPE : 10WIN32_OWN_PROCESS
  STATE: 4RUNNING
  (STOPPABLE, NOT_PAUSABLE, ACCEPTS_SHUTDOWN)
  WIN32_EXIT_CODE: 0(0x0)
  SERVICE_EXIT_CODE: 0(0x0)
  CHECKPOINT : 0x0
  WAIT_HINT: 0x0
  
  
  c:\>cacls "C:\Program Files (x86)\Hewlett-Packard\TouchSmart\Calendar\Service"
  C:\Program Files (x86)\Hewlett-Packard\TouchSmart\Calendar\Service Everyone:(OI)(CI)F
   NT AUTHORITY\SYSTEM:(OI)(CI)F
  
  
  
  Disclosure Timeline:
  ======================================
  Vendor Notification:October 14, 2016
  Vendor response: Product past warranty support
  October 26, 2016 : Public Disclosure
  
  
  Exploitation Technique:
  =======================
  Local
  
  
  
  Severity Level:
  ================
  Medium
  
  
  
  
  [+] 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.
  
  hyp3rlinx