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Telefonica O2 Connection Manager 8.7 Service Trusted Path Privilege Escalation

Low
Advisory ID
ZSL-2014-5200
Release Date
09 October 2014
Vendor
Telefonica S.A. - http://www.telefonica.com
Affected Version
8.7.6.792
CVE
N/A
Tested On
Microsoft Windows 7 Professional SP1 (EN), Microsoft Windows 7 Ultimate SP1 (EN)
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

The O2 Connection Manager's service suffers from an unquoted search path issue impacting the Import WiFi 'TGCM_ImportWiFiSvc' service for Windows. This could potentially allow an authorized but non-privileged local user to execute arbitrary code with elevated privileges on the system. A successful attempt would require the local user to be able to insert their code in the system root path undetected by the OS or other security applications where it could potentially be executed during application startup or reboot. If successful, the local user’s code would execute with the elevated privileges of the application.

Proof of Concept
Disclosure Timeline
22.09.2014Vulnerability discovered.
23.09.2014Contact with the vendor.
08.10.2014No reply from the vendor.
09.10.2014Public security advisory released.
Credits
Vulnerability discovered by Gjoko Krstic
References
Changelog
09.10.2014Initial release
10.10.2014Added reference [1], [2] and [3]
11.10.2014Added reference [4]
14.10.2014Added reference [5]
20.10.2014Added reference [6]