[NT] Identix's BioLogon 3 Can be Easily Bypassed

From: support@securiteam.com
Date: 02/15/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Fri, 15 Feb 2002 22:53:41 +0100 (CET)

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  Identix's BioLogon 3 Can be Easily Bypassed
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SUMMARY

The BioLogon 3 software is designed to provide 3-factor authentication.
Fingerprint, Smart Card, Password. All three authentications can be
bypassed at the login GINA.

DETAILS

Vulnerable systems:
Microsoft Windows BioLogon 3 Build (11106)

An individual with physical access to a laptop or workstation can gain
System privileges without authenticating in order to obtain, alter,
remove, data or to install a backdoor.

Sample exploit:
The operator presses CTRL-ALT-DEL at an XP or NT login. The GINA option
"More" can now be selected. For XP, it is possible to select Configure /
Sounds, then select an event and initiate "Browse". Once Browse is
initiated, System level explorer access is available. It is possible to
copy files or import files from removable media to local locations such as
startup folders. Properties can be altered and files removed or added. NT
4 behaves much the same with minor menu differences.

ADDITIONAL INFORMATION

The information has been provided by <mailto:proberts@teleport.com> Paul
A Roberts.

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