[NT] PGPDisk Available to Any "Switched User" Under Windows XP

From: SecuriTeam (support_at_securiteam.com)
Date: 10/22/03

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Date: 22 Oct 2003 11:15:18 +0200

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      PGPDisk Available to Any "Switched User" Under Windows XP
    ------------------------------------------------------------------------

    SUMMARY

    When a user mounts a PGPDisk and for whatever reason leaves his computer,
    the PGP disk stays "mounted".

    If another user, with a local login right, uses the Windows XP "switch
    user" function, he have full access to the mounted PGP Disk. The data is
    then locally compromised.

    Under Windows 2000 and Terminal server activated, it is possible that the
    data become then remotely compromised.

    DETAILS

    Mitigating factors:
     * If you log off, the disk is automatically unmounted.

     * NTFS access rights can be defined on the PGP Volume (with the known
    limitation, regarding powerful users that can take ownership of files) and
    the question regarding the usage of PGP Disk if the only security is
    NTFS...

     * You can activate the auto unmount option after a certain period. The
    problem is that if you have files open, you may loose your work.

    Vendor response:
    The vendor has been contacted and acknowledges this was a "known" problem.
    However, they were not able to tell Thierry if they plan to fix this issue
    or not.

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:thierry.deleeuw@advalvas.be>
    Thierry De Leeuw.

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