Microsoft PowerPoint CVE-2017-11934 Information Disclosure Vulnerability

Description

Microsoft PowerPoint is prone to an information-disclosure vulnerability. Attackers can exploit this issue to obtain sensitive information that may aid in launching further attacks.

Technologies Affected

• Microsoft Office 2013 RT Service Pack 1
• 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 Office 2016 Click-to-Run (C2R) for 32-bit edition
• Microsoft Office 2016 Click-to-Run (C2R) for 64-bit edition
• Microsoft Office 2016 for Mac

Recommendations

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 needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity such as unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.

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.

Updates are available. Please see the references or vendor advisory for more information.