AntiVir PersonalEdition Classic: Local Privilige Escalation Mar 11 2006 01:30PM
Ramon 'ports' Kukla (ml2 portsonline net)
Application: AntiVir PersonalEdition Classic
Site: http://www.free-av.de/
Version: 7 and maybe lower
OS: Windows XP, Windows 2000
Bugs: Local Privilige Escalation

AntiVir PersonalEdition Classic Windows from Avira GmbH protects your
computer from viruses, malware, unwanted programs and other dangers.

A few days ago I discovered a little 'Local Privilege Escalation' Bug
in the current version of AntiVir PersonalEdition Classic.

Part of AntiVir PersonalEdition Classic is a service called 'AntiVir
PersonalEdition Classic Planer' which runs with SYSTEM rights. If you
start the update process using the GUI, AntiVir will show you a status
window. After finishing the process AntiVir offers you a report. Open
the report using the button 'Report' and AntiVir will open the report
in the well known application 'notepad.exe'. Well, since the update was
initiated by the service 'AntiVir PersonalEdition Classic Planer',
which runs with SYSTEM rights, notepad.exe inherits these rights now.
Use 'notepad.exe' to *run* 'compmgmt.msc' for example and...
Well, you know what might happen now.

2006-03-04: Found the Bug and mailed Vendor
2006-03-05: Response from vendor, checking the problem
2006-03-09: Response from vendor, fix is on the way.


SYS 64767

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