Microsoft has released a patch for Windows XP/2000 that will eliminate a vulnerability that exists because a malicious user could issue a specially formatted, non-RFC compliant SMTP command that will result in a Denial of Service attack.
This would be carried out more typically through a custom application where the malformed data would cause the SMTP service to fail.
Download now to prevent a possible Denial of Service Attack.
News source: MS Download center
Download Patch: Windows 2000 (Q313450_W2K_SP3_X86_EN.exe) [1883kb]
Download Patch:Windows XP (Q313450_W2K_SP3_X86_EN.exe) [456kb]
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