Home Programs Emergency management Response CCIRC Analytical releases2 AV06-015: Microsoft Security Bulletin MS06-018, MS06-019, MS06-020

Microsoft Security Bulletin MS06-018, MS06-019, MS06-020

Number: AV06-015
Date: 9 May 2006

Purpose

The purpose of this advisory is to bring attention to the following vulnerabilities (2 Critical, and 1 Moderate) in some Microsoft products. 

MS06-018: Vulnerability in Microsoft Distributed Transaction Coordinator Could Allow Denial of Service (913580)

Assessment

MSDTC Invalid Memory Access Vulnerability - CVE-2006-0034:
A denial of service vulnerability exists that could allow an attacker to send a specially crafted network message to an affected system. An attacker could cause the Microsoft Distributed Transaction Coordinator (MSDTC) to stop responding. Note that the denial of service vulnerability would not allow an attacker to execute code or to elevate their user rights, but it could cause the affected system to stop accepting requests.

MSDTC Denial of Service Vulnerability - CVE-2006-1184:
A denial of service vulnerability exists that could allow an attacker to send a specially crafted network message to an affected system. An attacker could cause the Microsoft Distributed Transaction Coordinator (MSDTC) to stop responding. Note that the denial of service vulnerability would not allow an attacker to execute code or to elevate their user rights, but it could cause the affected system to stop accepting requests.

Impact of Vulnerability: Denial of Service

Maximum Severity Rating: Moderate

Affected Software
Microsoft Windows 2000 Service Pack 4
Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2
Microsoft Windows Server 2003
Microsoft Windows Server 2003 for Itanium-based Systems

Suggested action

PSEPC recommends that administrators test and install the update at the earliest opportunity.
http://www.microsoft.com/technet/security/Bulletin/MS06-018.mspx
 

MS06-019: Vulnerability in Microsoft Exchange Could Allow Remote Code Execution (916803)

Assessment

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.

Impact of Vulnerability: Remote Code Execution

Maximum Severity Rating: Critical

Affected Software:
Microsoft Exchange Server 2000 with the Exchange 2000 Post-Service Pack 3 Update Rollup of August 2004(870540)
Microsoft Exchange Server 2003 Service Pack 1
Microsoft Exchange Server 2003 Service Pack 2

Suggested action

PSEPC recommends that administrators test and install the update immediately.
http://www.microsoft.com/technet/security/Bulletin/MS06-019.mspx

MS06-020: Vulnerabilities in Macromedia Flash Player from Adobe Could Allow Remote Code Execution (913433)

Assessment

If a user is logged on with administrative user rights, an attacker who successfully exploited these vulnerabilities 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. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Impact of Vulnerability: Remote Code Execution

Maximum Severity Rating: Critical

Affected Software
Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2
Microsoft Windows 98, Microsoft Windows 98 Second Edition (SE), and Microsoft Windows Millennium Edition (ME)

Suggested action

PSEPC recommends that administrators test and install the update immediately.
http://www.microsoft.com/technet/security/Bulletin/MS06-020.mspx

Note to readers

Unauthorized use of computer systems and mischief in relation to data are serious Criminal Code offences in Canada. Any suspected criminal activity should be reported to local law enforcement organizations. The Royal Canadian Mounted Police (RCMP) National Operations Centre (N.O.C.) provides a 24/7 service to receive such reports or to redirect callers to local law enforcement organizations. The N.O.C. can be reached at (613) 993-4460. National security concerns should be reported to the Canadian Security Intelligence Service (CSIS) at (613) 993-9620.

For urgent matters or to report any incidents, please contact the Government Operations Centre at:

Phone: (613) 991-7000
Fax: (613) 996-0995
Secure Fax: (613) 991-7094
Email: goc-cog@psepc-sppcc.gc.ca

For general information on critical infrastructure protection and emergency preparedness, please contact PSEPC's Public Affairs division at:

Telephone: (613) 944-4875 or 1-800-830-3118
Fax: (613) 998-9589
E-mail: communications@psepc-sppcc.gc.ca
Web: www.psepc.gc.ca