Microsoft Office Remote Code Execution Vulnerability
CVE-2017-11826 is fixed in 16 products on 1 platform, first by KB3213647, released October 10, 2017. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on March 3, 2022. Patch Radar priority: Patch now.
<p>A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.</p> <p>Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Office. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) containing a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.</p> <p>The security update addresses the vulnerability by correcting how Microsoft Office handles objects in memory.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Microsoft Office Compatibility Pack Service Pack 3 | KB3213647 | Oct 10, 2017 | |
| Microsoft Office Online Server 2016 | KB3213659 | Oct 10, 2017 | |
| Microsoft Office Web Apps Server 2010 Service Pack 2 | KB4011194 | Oct 10, 2017 | |
| Microsoft Office Web Apps Server 2013 Service Pack 1 | KB4011231 | Oct 10, 2017 | |
| Microsoft Office Word Viewer | KB4011236 | Oct 10, 2017 | |
| Microsoft SharePoint Enterprise Server 2016 | KB4011217 | Oct 10, 2017 | |
| Microsoft Word 2007 Service Pack 3 | KB3213648 | Oct 10, 2017 | |
| Microsoft Word 2010 Service Pack 2 (32-bit editions) | KB3213627 | Oct 10, 2017 | |
| Microsoft Word 2010 Service Pack 2 (32-bit editions) | KB3213630 | Oct 10, 2017 | |
| Microsoft Word 2010 Service Pack 2 (64-bit editions) | KB3213627 | Oct 10, 2017 | |
| Microsoft Word 2010 Service Pack 2 (64-bit editions) | KB3213630 | Oct 10, 2017 | |
| Microsoft Word 2013 RT Service Pack 1 | KB4011232 | Oct 10, 2017 | |
| Microsoft Word 2013 Service Pack 1 (32-bit editions) | KB4011232 | Oct 10, 2017 | |
| Microsoft Word 2013 Service Pack 1 (64-bit editions) | KB4011232 | Oct 10, 2017 | |
| Microsoft Word 2016 (32-bit edition) | KB4011222 | Oct 10, 2017 | |
| Microsoft Word 2016 (64-bit edition) | KB4011222 | Oct 10, 2017 | |
| Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2 | KB3213623 | Oct 10, 2017 | |
| Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1 | KB4011068 | Oct 10, 2017 | |
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