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Data that is protected by user's private key can be accessed by a domain administrator who resets the user's password
Article ID: 320828 - View products that this article applies to.
This article was previously published under Q320828
When a domain administrator resets a user's password and then logs on to their Windows 2000-based computer with the reset password, the administrator can access the user's secured private e-mail and browser data. Additionally, if the computer is left unattended, anyone with access to the computer may also be able to see the user's private data.
The Windows 2000 implementation of Microsoft Cryptography Service Providers (CSPs) permits users to store their decryption keys on their computers that are protected with their domain password.
Service pack informationTo resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/260910/ )How to obtain the latest Windows 2000 service pack
Hotfix informationA supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 service pack that contains this hotfix.
To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=supportNote In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
File informationThe English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name -------------------------------------------------------------- 09-May-2002 21:53 5.0.2195.5655 123,664 Adsldp.dll 09-May-2002 21:53 5.0.2195.5655 130,832 Adsldpc.dll 09-May-2002 21:53 5.0.2195.5725 62,736 Adsmsext.dll 09-May-2002 21:53 5.0.2195.5720 357,648 Advapi32.dll 09-May-2002 21:53 5.131.2195.5543 466,704 Crypt32.dll 09-May-2002 21:53 5.131.2195.5747 443,152 Cryptui.dll 09-May-2002 21:53 5.0.2195.5595 135,952 Dnsapi.dll 09-May-2002 21:53 5.0.2195.5595 96,016 Dnsrslvr.dll 08-May-2002 22:40 5.0.2195.5747 145,168 Dssbase.dll 08-May-2002 22:40 5.0.2195.5747 146,704 Dssenh.dll 09-May-2002 21:53 5.0.2195.5722 45,328 Eventlog.dll 09-May-2002 21:53 5.0.2195.5639 146,192 Kdcsvc.dll 22-Apr-2002 18:24 5.0.2195.5640 199,952 Kerberos.dll 02-May-2002 20:44 5.0.2195.5724 71,024 Ksecdd.sys 07-May-2002 16:40 5.0.2195.5744 504,080 Lsasrv.dll 07-May-2002 16:40 5.0.2195.5744 33,552 Lsass.exe 07-Dec-2001 22:05 5.0.2195.4745 107,280 Msv1_0.dll 09-May-2002 21:53 5.0.2195.5626 306,960 Netapi32.dll 09-May-2002 21:53 5.0.2195.5723 360,208 Netlogon.dll 09-May-2002 21:53 5.0.2195.5719 916,752 Ntdsa.dll 09-May-2002 21:53 5.0.2195.5747 119,568 Psbase.dll 08-May-2002 22:40 5.0.2195.5747 132,368 Rsabase.dll 08-May-2002 22:40 5.0.2195.5747 134,416 Rsaenh.dll 09-May-2002 21:53 5.0.2195.5585 386,832 Samsrv.dll 09-May-2002 21:53 5.0.2195.5757 128,784 Scecli.dll 09-May-2002 21:53 5.0.2195.5757 299,792 Scesrv.dll 04-May-2002 18:34 5.0.2195.5736 62,464 Sp3res.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.
After installing this hotfix, the administrator can set a policy enforce strong password protection on user's computer. After the policy has propagated, the user has to type a password when he or she first accesses the encryption key. The key is cached for subsequent uses until the end of a fixed time-out period. After the time-out period has expired, the key expires and the memory that held the key is cleared to subsequent recovery.
With the strong password protection feature, the domain administrator cannot gain access to a user's private information. The strong password protection feature prevents a separate password from accessing the user’s private decryption key.
Article ID: 320828 - Last Review: February 20, 2007 - Revision: 5.9