Microsoft NTP Time Synchronization Spoof Weakness

Bugtraq ID:	10980
Class:	Design Error
CVE:
Remote:	Yes
Local:	No
Published:	Aug 19 2004 12:00AM
Updated:	Aug 19 2004 12:00AM
Credit:	3APA3A <[email protected]> disclosed this weakness.
Vulnerable:	Microsoft Windows XP Professional SP2 Microsoft Windows XP Professional SP1 Microsoft Windows XP Professional Microsoft Windows XP Embedded SP1 Microsoft Windows XP Embedded Microsoft Windows XP 64-bit Edition Version 2003 SP1 Microsoft Windows XP 64-bit Edition Version 2003 Microsoft Windows XP 64-bit Edition SP1 Microsoft Windows XP 64-bit Edition Microsoft Windows Server 2003 Web Edition Microsoft Windows Server 2003 Standard Edition Microsoft Windows Server 2003 Enterprise Edition Itanium 0 Microsoft Windows Server 2003 Enterprise Edition Microsoft Windows Server 2003 Datacenter Edition Itanium 0 Microsoft Windows Server 2003 Datacenter Edition Microsoft Windows 2000 Server Japanese Edition Microsoft Windows 2000 Server SP4 Microsoft Windows 2000 Server SP3 Microsoft Windows 2000 Server SP2 Microsoft Windows 2000 Server SP1 Microsoft Windows 2000 Server + Avaya DefinityOne Media Servers + Avaya IP600 Media Servers + Avaya S3400 Message Application Server 0 + Avaya S8100 Media Servers 0 Microsoft Windows 2000 Professional SP4 Microsoft Windows 2000 Professional SP3 Microsoft Windows 2000 Professional SP2 Microsoft Windows 2000 Professional SP1 Microsoft Windows 2000 Professional Microsoft Windows 2000 Datacenter Server SP4 Microsoft Windows 2000 Datacenter Server SP3 Microsoft Windows 2000 Datacenter Server SP2 Microsoft Windows 2000 Datacenter Server SP1 Microsoft Windows 2000 Datacenter Server Microsoft Windows 2000 Advanced Server SP4 Microsoft Windows 2000 Advanced Server SP3 Microsoft Windows 2000 Advanced Server SP2 Microsoft Windows 2000 Advanced Server SP1 Microsoft Windows 2000 Advanced Server Microsoft Small Business Server 2003 Microsoft Small Business Server 2000 0
Not Vulnerable:

Microsoft NTP Time Synchronization Spoof Weakness

It is reported that the NTP implementation in Microsoft operating systems is vulnerable to time spoofing attacks.

An attacker may be able to alter the time on the domain controller, causing the entire domain to synchronize with the attacker specified time in Windows 2000 operating systems. With Windows XP and 2003 operating systems, an attacker may be able to create very large differences between server and workstation times.

This weakness may allow an attacker to deny service to legitimate users, as correct time is required for many operations, including domain authentication, X.509 certificate expiration times. Other attacks may also be possible.

This weakness is reported to exist in all versions of Microsoft operating systems that include Active Directory support.

Microsoft NTP Time Synchronization Spoof Weakness

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Microsoft NTP Time Synchronization Spoof Weakness

Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Microsoft NTP Time Synchronization Spoof Weakness

References:

• Active Directory (Microsoft)
  
• Knowledge Base Article - 884776 (Microsoft)
  
• NTP Homepage (ntp.org)
  
• Security aspects of time synchronization infrastructure (SECURITY.NNOV)
  
• Microsoft updates documentation on Windows time synchronization (3APA3A <[email protected]>)
  
• Security aspects of time synchronization infrastructure (3APA3A <[email protected]>)