July 10, 2018
Microsoft Office is prone to a security bypass vulnerability. An attacker can leverage this issue to bypass certain security restrictions; this may aid in launching further attacks.
- Microsoft Office 2010 (32-bit edition) SP2
- Microsoft Office 2010 (64-bit edition) SP2
- Microsoft Office 2016 Click-to-Run (C2R) for 32-bit edition
- Microsoft Office 2016 Click-to-Run (C2R) for 64-bit edition
- Microsoft Word 2010 Service Pack 2 (32-bit editions)
- Microsoft Word 2010 Service Pack 2 (64-bit editions)
- Microsoft Word 2013 RT Service Pack 1
- Microsoft Word 2013 Service Pack 1 (32-bit editions)
- Microsoft Word 2013 Service Pack 1 (64-bit editions)
- Microsoft Word 2016 (32-bit edition)
- Microsoft Word 2016 (64-bit edition)
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.
Jonathan Birch of Microsoft Corporation
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