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TITLE:
Microsoft Windows TCP/IP Implementation Vulnerabilities

SECUNIA ADVISORY ID:
SA28297

VERIFY ADVISORY:
http://secunia.com/advisories/28297/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

OPERATING SYSTEM:
Microsoft Windows XP Professional
http://secunia.com/product/22/
Microsoft Windows XP Home Edition
http://secunia.com/product/16/
Microsoft Windows Vista
http://secunia.com/product/13223/
Microsoft Windows Storage Server 2003
http://secunia.com/product/12399/
Microsoft Windows Server 2003 Web Edition
http://secunia.com/product/1176/
Microsoft Windows Server 2003 Standard Edition
http://secunia.com/product/1173/
Microsoft Windows Server 2003 Enterprise Edition
http://secunia.com/product/1174/
Microsoft Windows Server 2003 Datacenter Edition
http://secunia.com/product/1175/
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:
Two vulnerabilities have been reported in Microsoft Windows, which
can be exploited by malicious people to cause a DoS (Denial of
Service) or compromise a vulnerable system.

1) An error in the kernel's TCP/IP implementation (tcpip.sys) when
handling IGMPv3 and MLDv2 queries can be exploited to crash the
system and potentially execute arbitrary code via a specially crafted
IGMPv3 or MLDv2 packet.

NOTE: This vulnerability does not affect systems running Windows
2000.

2) An error in the kernel's TCP/IP implementation (tcpip.sys) when
handling fragmented router advertisement ICMP queries can be
exploited to cause the system to stop responding via a specially
crafted ICMP query.

Successful exploitation requires that Router Discovery Protocol (RDP)
is enabled (disabled by default).

NOTE: This vulnerability does not affect systems running Windows
Vista.

SOLUTION:
Apply patches.

Windows 2000 SP4:
http://www.microsoft.com/downloads/details.aspx?FamilyID=980f5457-c7b5-421c-8643-0e57429ec156

Windows XP SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyID=0a766242-2342-4fa0-9b66-8953c54a2211

Windows XP Professional x64 Edition (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyID=2e8bc7d5-fe81-4ed5-9efa-360738d160ee

Windows Server 2003 SP1/SP2:
http://www.microsoft.com/downloads/details.aspx?FamilyID=fda060a5-9a1e-4036-9899-13eb61fdd8be

Windows Server 2003 x64 Edition (optionally with SP2):
http://www.microsoft.com/downloads/details.aspx?FamilyID=19d993f9-06dd-4dc4-b0cc-c59e822eb8fa

Windows Server 2003 with SP1/SP2 for Itanium-based systems:
http://www.microsoft.com/downloads/details.aspx?FamilyID=2c2264f7-ebbb-40ab-9dbf-9b4e313665a7

Windows Vista:
http://www.microsoft.com/downloads/details.aspx?FamilyID=23c0e03a-db66-4618-bce0-af55e5c1b067

Windows Vista x64 Edition:
http://www.microsoft.com/downloads/details.aspx?FamilyID=5f6a37b1-c604-47c9-932f-485db2eda133

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Alex Wheeler and Ryan Smith, IBM Internet Security
Systems X-Force.

ORIGINAL ADVISORY:
MS08-001 (KB941644):
http://www.microsoft.com/technet/security/Bulletin/MS08-001.mspx

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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