CVE-2017-8631 Memory corruption in Microsoft Office
Remote code execution via memory corruption in Microsoft Excel and related Office components when handling objects.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-8631?
CVE-2017-8631 is a high-severity memory corruption vulnerability in Microsoft Excel, published on 13 Sep 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A remote code execution vulnerability exists in Excel Services, Microsoft Excel 2007 Service Pack 3, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1, Microsoft Excel 2013 RT Service Pack 1, Microsoft Excel 2016, Microsoft Office Web Apps 2013, Microsoft Office Compatibility Pack Service Pack 3, Microsoft Excel Web App 2013 Service Pack 1, Microsoft Excel Viewer 2007 Service Pack 3, and Office Online Server when they fail to properly handle objects in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-8630, CVE-2017-8632, and CVE-2017-8744.
Which versions are affected by CVE-2017-8631?
It affects 6 products.
Products include Microsoft Excel, Microsoft Excel Viewer, Microsoft Excel Web App, Microsoft Office Compatibility Pack, Microsoft Office Online Server, Microsoft Office Web Apps.
How do I fix CVE-2017-8631?
No fix has been published for CVE-2017-8631 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2017-8631 being exploited?
There is no known exploitation of CVE-2017-8631 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Excel
Sources
Also known as GHSA-69qj-9564-354m.