Gjoko KrsticZSL-2014-5199Telefonica O2 Connection Manager 3.4 Local Privilege Escalation Vulnerability
7.2 High
AI Score
Confidence
Low
Title: Telefonica O2 Connection Manager 3.4 Local Privilege Escalation Vulnerability
Advisory ID: ZSL-2014-5199
Type: Local
Impact: Privilege Escalation
Risk: (2/5)
Release Date: 09.10.2014
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.
Description
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.
Vendor
Telefonica S.A. - <http://www.telefonica.com>
Affected Version
3.4.R1 (108)
Tested On
Microsoft Windows 7 Professional SP1 (EN)
Microsoft Windows 7 Ultimate SP1 (EN)
Vendor Status
[22.09.2014] Vulnerability discovered.
[23.09.2014] Contact with the vendor.
[08.10.2014] No reply from the vendor.
[09.10.2014] Public security advisory released.
PoC
Credits
Vulnerability discovered by Gjoko Krstic - <[email protected]>
References
[1] <http://packetstormsecurity.com/files/128627>
[2] <http://cxsecurity.com/issue/WLB-2014100065>
[3] <http://osvdb.org/show/osvdb/113018>
[4] <http://www.securityfocus.com/bid/70371>
[5] <http://www.exploit-db.com/exploits/34966/>
[6] <http://xforce.iss.net/xforce/xfdb/96997>
Changelog
[09.10.2014] - Initial release
[10.10.2014] - Added reference [1], [2] and [3]
[11.10.2014] - Added reference [4]
[14.10.2014] - Added reference [5]
[20.10.2014] - Added reference [6]
Contact
Zero Science Lab
Web: <http://www.zeroscience.mk>
e-mail: [email protected]
<html><body><p>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>
==========================================================================
</p></body></html>7.2 High
AI Score
Confidence
Low