Telefonica O2 Connection Manager 3.4 Local Privilege Escalation Vulnerability
Vendor: Telefonica S.A.
Product web page: http://www.telefonica.com | http://www.o2.co.uk
Affected version: 3.4.R1 (108)
Summary: O2 Connection Manager will help you to manage your internet
connections by getting you connected to the fastest available network.
Automatically connect you to the fastest available network including
your home broadband if you have a wireless router.
Desc: O2 Connection Manager suffers from an elevation of privileges
vulnerability which can be used by a simple user that can change the
executable files with a binary of choice. The vulnerability exist due
to the improper permissions, with the 'F' flag (Full) for 'Everyone'
group, making the entire directory 'O2 Connection Manager' and its
files and sub-dirs world-writable.
Tested on: Microsoft Windows 7 Professional SP1 (EN)
Microsoft Windows 7 Ultimate SP1 (EN)
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2014-5199
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2014-5199.php
22.09.2014
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==========================================================================
Arguments Used:
Filename = "C:\Program Files (x86)\O2CM-CE\O2 Connection Manager"
**************************************************************************
Directory: C:\Program Files (x86)\O2CM-CE\O2 Connection Manager
Permissions:
Type UsernamePermissions Inheritance
Allowed\Everyone Full ControlThis Folder Only
Allowed\Everyone Special (Unknown) Files Only
AllowedBUILTIN\AdministratorsSpecial (DCBA654321)This Folder and Files
AllowedNT SERVICE\TrustedInsta Full ControlThis Folder Only
AllowedNT SERVICE\TrustedInsta Special (Unknown) Subfolders only
AllowedNT AUTHORITY\SYSTEM Full ControlThis Folder Only
AllowedNT AUTHORITY\SYSTEM Special (Unknown) Subfolders and Files
AllowedBUILTIN\AdministratorsFull ControlThis Folder Only
AllowedBUILTIN\AdministratorsSpecial (Unknown) Subfolders and Files
AllowedBUILTIN\Users Read and ExecuteThis Folder Only
AllowedBUILTIN\Users Special (Unknown) Subfolders and Files
Allowed\CREATOR OWNERSpecial (Unknown) Subfolders and Files
No Auditing set
Owner: NT AUTHORITY\SYSTEM
**************************************************************************
Operation Complete
Elapsed Time: 0,234375 seconds.
==========================================================================
Arguments Used:
Filename = "C:\Program Files (x86)\O2CM-CE\O2 Connection Manager\tscui.exe"
**************************************************************************
File: C:\Program Files (x86)\O2CM-CE\O2 Connection Manager\tscui.exe
Permissions:
Type UsernamePermissions Inheritance
Allowed\Everyone Full ControlThis Folder Only
AllowedBUILTIN\AdministratorsSpecial (DCBA654321)This Folder Only
AllowedNT AUTHORITY\SYSTEM Full ControlThis Folder Only
AllowedBUILTIN\AdministratorsFull ControlThis Folder Only
AllowedBUILTIN\Users Read and ExecuteThis Folder Only
No Auditing set
Owner: NT AUTHORITY\SYSTEM
**************************************************************************
Operation Complete
Elapsed Time: 0,125 seconds.
==========================================================================
C:\Program Files (x86)\O2CM-CE\O2 Connection Manager>icacls *.exe |findstr "Everyone:(I)(F)"
Elevate.exe Everyone:(I)(F)
locSrch.exe Everyone:(I)(F)
md5sum.exe Everyone:(I)(F)
patch.exe Everyone:(I)(F)
ProfileImp.exe Everyone:(I)(F)
SupportAssistant.exe Everyone:(I)(F)
tscui.exe Everyone:(I)(F)
vcredist_x86.exe Everyone:(I)(F)
WifiProfileImportTool.exe Everyone:(I)(F)
XAU.exe Everyone:(I)(F)
C:\Program Files (x86)\O2CM-CE\O2 Connection Manager>
==========================================================================