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Telefonica O2 Connection Manager 3.4 Local Privilege Escalation

Telefonica O2 Connection Manager 3.4 Local Privilege Escalation
Posted Oct 10, 2014
Authored by LiquidWorm | Site zeroscience.mk

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.

tags | exploit
MD5 | 4d033bd9ea18075264665e2c94456f52

Telefonica O2 Connection Manager 3.4 Local Privilege Escalation

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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

---

==========================================================================

Arguments Used:
Filename = "C:\Program Files (x86)\O2CM-CE\O2 Connection Manager"



**************************************************************************
Directory: C:\Program Files (x86)\O2CM-CE\O2 Connection Manager

Permissions:
Type Username Permissions Inheritance

Allowed \Everyone Full Control This Folder Only
Allowed \Everyone Special (Unknown) Files Only
Allowed BUILTIN\Administrators Special (DCBA654321) This Folder and Files
Allowed NT SERVICE\TrustedInsta Full Control This Folder Only
Allowed NT SERVICE\TrustedInsta Special (Unknown) Subfolders only
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only
Allowed NT AUTHORITY\SYSTEM Special (Unknown) Subfolders and Files
Allowed BUILTIN\Administrators Full Control This Folder Only
Allowed BUILTIN\Administrators Special (Unknown) Subfolders and Files
Allowed BUILTIN\Users Read and Execute This Folder Only
Allowed BUILTIN\Users Special (Unknown) Subfolders and Files
Allowed \CREATOR OWNER Special (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 Username Permissions Inheritance

Allowed \Everyone Full Control This Folder Only
Allowed BUILTIN\Administrators Special (DCBA654321) This Folder Only
Allowed NT AUTHORITY\SYSTEM Full Control This Folder Only
Allowed BUILTIN\Administrators Full Control This Folder Only
Allowed BUILTIN\Users Read and Execute This 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>

==========================================================================
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