Title: Microsoft Windows "April Fools 2001" Vulnerability
Severity: INFO
Description:
Beginning April 1, 2001 and continuing through April 8, 2001, Windows applications will be offset by one hour - even though the system clock will show the proper time. This is due to the MSVCRT.DLL not correctly interpreting Daylight Savings time during any year in which April 1st falls on a Sunday. In these instances, the DLL is fooled into thinking that DST begins one week later on April 8th.
MSVCRT.DLL shipping with MS VC++ versions 4.1, 4.2, 5.0 and 6.0 are thought to be vulnerable.
Affected Products:
- Microsoft Windows 98
- Microsoft Windows NT 4.0
- Microsoft Windows NT 4.0 SP1
- Microsoft Windows NT 4.0 SP2
- Microsoft Windows NT 4.0 SP3
- Microsoft Windows NT Enterprise Server 4.0
- Microsoft Windows NT Enterprise Server 4.0 SP1
- Microsoft Windows NT Enterprise Server 4.0 SP2
- Microsoft Windows NT Enterprise Server 4.0 SP3
- Microsoft Windows NT Server 4.0
- Microsoft Windows NT Server 4.0 SP1
- Microsoft Windows NT Server 4.0 SP2
- Microsoft Windows NT Server 4.0 SP3
- Microsoft Windows NT Terminal Server 4.0
- Microsoft Windows NT Terminal Server 4.0 SP1
- Microsoft Windows NT Terminal Server 4.0 SP2
- Microsoft Windows NT Terminal Server 4.0 SP3
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows NT Workstation 4.0 SP1
- Microsoft Windows NT Workstation 4.0 SP2
- Microsoft Windows NT Workstation 4.0 SP3
References:
- Richard M. Smith <rms@PHARLAP.COM>: The Windows "April Fools 2001" bug
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