[TZO-062006] Safe'nVulnerable
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Safe'nSec - Insecure File execution and Auto-startup
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Ref : TZO-062006-SafenSec
Author : Thierry Zoller
WWW : http://secdev.zoller.lu
Article : http://secdev.zoller.lu/research/safensec.htm
I. Background
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"Safe'n'Sec is complex data and user applications protection against
threats and vulnerabilities for individual PC as well as workstations
in corporate networks. The program uses proactive technology based on
activity analysis in user PC."
II. Description
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Vulnerable versions :
- Safe'nSec Personal + Antispyware v2.0 and older
- Probably the other versions of Safe'nSec
Multiple Insecure File execution and Autostart handling.
During Startup,
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snsmcon.exe spawns the GUI process named safensec.exe through the use
of CreateProcess() . By doing so it omits to set the
variable'lpApplicationName'
and further omits to quote the path in the variable "lpCommandLine" Ref [1]
This results in c:\program.bat|exe|com being called prior to
safensec.exe and allows automatic startup of a potentially rogue application.
In particular one could imagine a scenario where it is possible to escalate
rights using this (as they are inherited from snsmcon.exe).
During Autostartup
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Safe'nSec omits the quotes around the path to the
executable and as such may spawn a rogue application instead of the
appropriate Starforce application.
During Installation:
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During installion a routine spawns a process and omits the quotes
around the path, thus executing c:\program.exe (here calc.exe)
III. Summary
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Vendor contact : 15/02/2006
Vendor Response : None
Vendor Response :
None
[1] http://lists.grok.org.uk/pipermail/full-disclosure/2005-November/038789.html
[2] Only a real issue in Windows 2000, WinXP restricted users don't have the
right to write to c:\
--
http://secdev.zoller.lu
Thierry Zoller
Fingerprint : 5D84 BFDC CD36 A951 2C45 2E57 28B3 75DD 0AC6 F1C7