Date: 10 February 2010
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AUSCERT External Security Bulletin Redistribution
ESB-2010.0128
Vulnerabilities in Windows TCP/IP Could Allow Remote Code Execution
10 February 2010
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AusCERT Security Bulletin Summary
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Product: Windows TCP/IP v6
Publisher: Microsoft
Operating System: Windows Vista
Windows Server 2008
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Administrator Compromise -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2010-0242 CVE-2010-0241 CVE-2010-0240
CVE-2010-0239
Original Bulletin:
http://www.microsoft.com/technet/security/Bulletin/MS10-009.mspx
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Microsoft Security Bulletin MS10-009 - Critical
Vulnerabilities in Windows TCP/IP Could Allow Remote Code Execution
(974145)
Published: February 09, 2010
Version: 1.0
General Information
Executive Summary
This security update resolves four privately reported vulnerabilities in
Microsoft Windows. The most severe of these vulnerabilities could allow
remote code execution if specially crafted packets are sent to a computer
with IPv6 enabled. An attacker could try to exploit the vulnerability by
creating specially crafted ICMPv6 packets and sending the packets to a
system with IPv6 enabled. This vulnerability may only be exploited if the
attacker is on-link.
This security update is rated Critical for Windows Vista and Windows
Server 2008.
The security update addresses the vulnerabilities by changing the way
Windows TCP/IP performs bounds checking and other packet handling
operations.
Recommendation. The majority of customers have automatic updating enabled
and will not need to take any action because this security update will be
downloaded and installed automatically. Customers who have not enabled
automatic updating need to check for updates and install this update
manually.
For administrators and enterprise installations, or end users who want to
install this security update manually, Microsoft recommends that customers
apply the update immediately using update management software, or by
checking for updates using the Microsoft Update service.
Known Issues. None
Affected Software
Windows Vista, Windows Vista Service Pack 1, and Windows Vista
Service Pack 2
Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit
Systems Service Pack 2
Windows Server 2008 for x64-based Systems and Windows Server 2008 for
x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for
Itanium-based Systems Service Pack 2
Vulnerability Information
ICMPv6 Router Advertisement Vulnerability - CVE-2010-0239
A remote code execution vulnerability exists in the Windows TCP/IP stack
due to insufficient bounds checking when processing specially crafted
ICMPv6 Router Advertisement packets. An anonymous attacker could exploit
the vulnerability by sending specially crafted ICMPv6 Router Advertisement
packets to a computer with IPv6 enabled. An attacker who successfully
exploited this vulnerability could take complete control of an affected
system. An attacker could then install programs; view, change, or delete
data; or create new accounts with full user rights.
Header MDL Fragmentation Vulnerability - CVE-2010-0240
A remote code execution vulnerability exists in the Windows TCP/IP stack
due to the manner in which the TCP/IP stack handles specially crafted
Encapsulating Security Payloads (ESP) over UDP datagram fragments when
running a custom network driver. An attacker who successfully exploited
this vulnerability could take complete control of an affected system.
An attacker could then install programs; view, change, or delete data;
or create new accounts with full user rights.
ICMPv6 Route Information Vulnerability - CVE-2010-0241
A remote code execution vulnerability exists in the Windows TCP/IP stack
due to insufficient bounds checking when processing specially crafted
ICMPv6 Route Information packets. An anonymous attacker could exploit
the vulnerability by sending specially crafted ICMPv6 Route Information
packets to a computer with IPv6 enabled. An attacker who successfully
exploited this vulnerability could take complete control of an affected
system. An attacker could then install programs; view, change, or delete
data; or create new accounts with full user rights.
TCP/IP Selective Acknowledgement Vulnerability - CVE-2010-0242
A denial of service vulnerability exists in TCP/IP processing in
Microsoft Windows due to an error in the processing of specially crafted
TCP packets with a malformed selective acknowledgment (SACK) value. An
attacker could exploit the vulnerability by sending the target system a
small number of specially crafted packets causing the affected system to
stop responding and automatically restart.
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The University of Queensland
Brisbane
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