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HP TouchSmart Calendar 4.1.4245 - Insecure File Permissions Privilege Escalation Vulnerability
[[+] Credits: John Page aka hyp3rlinx
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 : 10 WIN32_OWN_PROCESS
STATE : 4 RUNNING
(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
# 0day.today [2024-12-25] #