Microsoft XML External Entities Resolution CVE-2011-1280 Information Disclosure Vulnerability

Description

Microsoft XML editor is prone to a remote information-disclosure vulnerability. Attackers can exploit this issue to gain access to sensitive information that may aid in further attacks. Attackers can exploit this issue by enticing an unsuspecting user to visit a specially crafted webpage.

Technologies Affected

• Avaya Aura Conferencing 6.0 Standard
• Avaya CallPilot 4.0
• Avaya CallPilot 5.0
• Avaya Communication Server 1000 Telephony Manager 3.0
• Avaya Communication Server 1000 Telephony Manager 4.0
• Avaya Meeting Exchange - Client Registration Server
• Avaya Meeting Exchange - Recording Server
• Avaya Meeting Exchange - Streaming Server
• Avaya Meeting Exchange - Web Conferencing Server
• Avaya Meeting Exchange - Webportal 6.0
• Avaya Meeting Exchange 5.0
• Avaya Meeting Exchange 5.0 SP1
• Avaya Meeting Exchange 5.0 SP2
• Avaya Meeting Exchange 5.0.0.0.52
• Avaya Meeting Exchange 5.1
• Avaya Meeting Exchange 5.1 SP1
• Avaya Meeting Exchange 5.2
• Avaya Meeting Exchange 5.2 SP1
• Avaya Meeting Exchange 5.2 SP2
• Avaya Messaging Application Server 4
• Avaya Messaging Application Server 5
• Avaya Messaging Application Server 5.2
• Microsoft InfoPath 2007 SP2
• Microsoft InfoPath 2010
• Microsoft Office 2007 SP2
• Microsoft Office 2010 (32-bit edition)
• Microsoft Office 2010 (64-bit edition)
• Microsoft SQL Server 2005 Express Edition SP3
• Microsoft SQL Server 2005 Express Edition SP4
• Microsoft SQL Server 2005 Express Edition with Advanced Serv SP3
• Microsoft SQL Server 2005 Express Edition with Advanced Serv SP4
• Microsoft SQL Server 2005 Itanium Edition SP3
• Microsoft SQL Server 2005 Itanium Edition SP4
• Microsoft SQL Server 2005 SP3
• Microsoft SQL Server 2005 SP4
• Microsoft SQL Server 2005 x64 Edition SP3
• Microsoft SQL Server 2005 x64 Edition SP4
• Microsoft SQL Server 2008 32bit R2
• Microsoft SQL Server 2008 32bit SP1
• Microsoft SQL Server 2008 32bit SP2
• Microsoft SQL Server 2008 itanium R2
• Microsoft SQL Server 2008 itanium SP1
• Microsoft SQL Server 2008 itanium SP2
• Microsoft SQL Server 2008 x64 R2
• Microsoft SQL Server 2008 x64 SP2
• Microsoft SQL Server Management Studio Express (SSMSE) 2005
• Microsoft SQL Server Management Studio Express (SSMSE) 2005 x64
• Microsoft Visual Studio 2005 SP1
• Microsoft Visual Studio 2008 SP1
• Microsoft Visual Studio 2010

Recommendations

Run all software as a nonprivileged user with minimal access rights.
To limit the consequences of a successful exploit, run the application with the least privilege required.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Do not follow links provided by unknown or untrusted sources.
Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.

Set web browser security to disable the execution of script code or active content.
Since a successful exploit of this issue requires malicious code to execute in web clients, consider disabling support for script code and active content within the client browser. Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.

The vendor has released an advisory and fixes. Please see the references for more information.