April 7, 2017
Microsoft Office is prone to a remote code-execution vulnerability. An attacker can leverage this issue to execute arbitrary code and gain complete control of the affected system.
- Microsoft Office 2007 Service Pack 3
- Microsoft Office 2010 Service Pack 2 (32-bit editions)
- Microsoft Office 2010 Service Pack 2 (64-bit editions)
- Microsoft Office 2013 Service Pack 1 (32-bit editions)
- Microsoft Office 2013 Service Pack 1 (64-bit editions)
- Microsoft Office 2016 (32-bit edition)
- Microsoft Office 2016 (64-bit edition)
- Microsoft Windows 7 for 32-bit Systems SP1
- Microsoft Windows 7 for x64-based Systems SP1
- Microsoft Windows Server 2008 R2 for Itanium-based Systems SP1
- Microsoft Windows Server 2008 R2 for x64-based Systems SP1
- Microsoft Windows Server 2008 for 32-bit Systems SP2
- Microsoft Windows Server 2008 for Itanium-based Systems SP2
- Microsoft Windows Server 2008 for x64-based Systems SP2
- Microsoft Windows Server 2012
- Microsoft Windows Vista SP2
- Microsoft Windows Vista x64 Edition Service Pack 2
Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn't required. Restricting access to only trusted computers and networks might greatly reduce the likelihood of exploits.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for anomalous or suspicious activity. Monitor logs generated by NIDS and by the server itself for evidence of attacks against the server.
Do not accept or execute files from untrusted or unknown sources.
To reduce the likelihood of successful exploits, never handle files that originate from unfamiliar or untrusted sources.
Permit privileged access for trusted individuals only.
Permitting access to vulnerable applications for trusted individuals only can reduce the risk of an exploit.
Updates are available. Please see the references or vendor advisory for more information.
Ryan Hanson (@Ryhanson) of Optiv, GenWei Jiang, FLARE Team, FireEye Inc, Eduardo Braun Prado, SecuriTeam Secure Disclosure (SSD) and Microsoft Office Security Team.
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