TITLE:
Microsoft Windows UPnP GetDeviceList Denial of Service

SECUNIA ADVISORY ID:
SA17595

VERIFY ADVISORY:
http://secunia.com/advisories/17595/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From local network

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/
Microsoft Windows XP Home Edition
http://secunia.com/product/16/
Microsoft Windows XP Professional
http://secunia.com/product/22/

DESCRIPTION:
Winny Thomas has discovered a vulnerability in Microsoft Windows,
which can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to a memory allocation error when
handling UPnP GetDeviceList requests via RPC. This can be exploited
to cause "services.exe" to consume large amount of memory for a
limited period of time.

Successful exploitation causes a DoS but requires valid logon
credentials on Windows XP Service Pack 1.

The vulnerability has been confirmed in Windows 2000 SP4 and is also
reported in Windows XP Service Pack 1.

Note: An exploit for this vulnerability is publicly available.

SOLUTION:
Restrict access to the affected systems using a firewall.

Windows XP Service Pack 2, Windows Server 2003 and Windows Server
2003 Service Pack 1 are reportedly not vulnerable.

PROVIDED AND/OR DISCOVERED BY:
Winny Thomas

ORIGINAL ADVISORY:
http://www.microsoft.com/technet/security/advisory/911052.mspx

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