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ESTsoft ALUpdate Privilege Escalation Vulnerablity

Author: Osanda Malith Jayathissa , Published: 29-10-2014
# Title: ESTsoft ALUpdate Privilege Escalation Vulnerablity
# Version: 8.5.1.0.0
# Tested on: Windows XP SP2 en
# Vendor: http://www.altools.com/
# E-Mail: osanda[at]unseen.is
# Author: Osanda Malith Jayathissa
# /!\ Author is not responsible for any damage you cause
# Use this material for educational purposes only
# CVE: CVE-2014-8494

- Description
==============
The "ALUpdate" folder and the "ALUpdate.exe" has been granted with full permissions
to the "Users" group. Any user other than the administrator could plant malware or
bind malware to the original EXE file. This is valid to any software you download
from the vendor.

- Proof of Concept
===================

C:\Program Files\ESTsoft>cacls ALUpdate
C:\Program Files\ESTsoft\ALUpdate BUILTIN\Users:(OI)(CI)F
NT SERVICE\TrustedInstaller:(ID)F
NT SERVICE\TrustedInstaller:(CI)(IO)(ID)F
NT AUTHORITY\SYSTEM:(ID)F
NT AUTHORITY\SYSTEM:(OI)(CI)(IO)(ID)F
BUILTIN\Administrators:(ID)F
BUILTIN\Administrators:(OI)(CI)(IO)(ID)F
BUILTIN\Users:(ID)R
BUILTIN\Users:(OI)(CI)(IO)(ID)(special access:)
GENERIC_READ
GENERIC_EXECUTE

CREATOR OWNER:(OI)(CI)(IO)(ID)F


C:\Program Files\ESTsoft>cd ALUpdate

C:\Program Files\ESTsoft\ALUpdate>cacls ALUpdate.exe
C:\Program Files\ESTsoft\ALUpdate\ALUpdate.exe BUILTIN\Users:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Administrators:(ID)F

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