SECUNIA ADVISORY ID: SA23312

VERIFY ADVISORY: http://secunia.com/advisories/23312/

CRITICAL: Moderately critical

IMPACT: System access

OPERATING SYSTEM:
Microsoft Windows 2000 Advanced Server - http://secunia.com/product/21/
Microsoft Windows 2000 Datacenter Server - http://secunia.com/product/1177/
Microsoft Windows 2000 Professional - http://secunia.com/product/1/
Microsoft Windows 2000 Server - http://secunia.com/product/20/

DESCRIPTION: A vulnerability has been reported in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system. The vulnerability is caused due to the Remote Installation Service enabling a TFTP service, which by default allows anonymous users to upload malicious files or overwrite existing operating system files.

SOLUTION: Apply patch.

Microsoft Windows 2000 SP4: http://www.microsoft.com/downloads/details.aspx?FamilyId=0ed62db9-4534-4f27-a49e-020c7a7d69e0

PROVIDED AND/OR DISCOVERED BY: The vendor credits Nicolas Ruff.

ORIGINAL ADVISORY: MS06-077 (KB926121): http://www.microsoft.com/technet/security/Bulletin/MS06-077.mspx