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ESTsoft ALUpdate 8.5.1.0.0 Privilege Escalation

ESTsoft ALUpdate 8.5.1.0.0 Privilege Escalation
Posted Oct 28, 2014
Authored by Osanda Malith

ESTsoft ALUpdate version 8.5.1.0.0 suffers from a privilege escalation vulnerability.

tags | exploit
advisories | CVE-2014-8494
SHA-256 | 2ac6441238ee7b081bebbe85cb5cc78a62c50c26bd6433f839deaadbcc8214cd

ESTsoft ALUpdate 8.5.1.0.0 Privilege Escalation

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# 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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