CVE-2018-1028 — Microsoft Office Graphics Remote Code Execution Vulnerability

Executive Summary

A remote code execution vulnerability exists when the Office graphics component improperly handles specially crafted embedded fonts. An attacker who successfully exploited this vulnerability 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. There are multiple ways an attacker could exploit this vulnerability. In a web-based attack scenario, an attacker could host a specially crafted website designed to exploit the vulnerability and then convince a user to view the website. An attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action, typically by getting the user to click a link in an email or instant message that takes the user to the attacker's website, or by opening an attachment sent through email. In a file-sharing attack scenario, an attacker could provide a specially crafted document file designed to exploit the vulnerability and then convince a user to open the document file. Note that the Preview Pane is not an attack vector for this vulnerability. The security update addresses the vulnerability by correcting how the Windows font library handles embedded fonts.

Overview

Important

MS Severity

Not Exploited

MS Exploit Status

More Likely

MS Exploit Likelihood

Category Remote Code Execution

Released Apr 10 2018

Last Updated Apr 10 2018

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score

No EPSS score available for this CVE.

View on FIRST.org

Affected Products

14 affected products

Product	KB Article	Severity	Impact	Restart Required
Excel Services on Microsoft SharePoint Enterprise Server 2013 Service Pack 1	`4018343 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office 2010 Service Pack 2 (32-bit editions)	`4018311 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office 2010 Service Pack 2 (64-bit editions)	`4018311 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office 2013 RT Service Pack 1	`4018330 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office 2013 Service Pack 1 (32-bit editions)	`4018330 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office 2013 Service Pack 1 (64-bit editions)	`4018330 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office 2016 (32-bit edition)	`4018328 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office 2016 (64-bit edition)	`4018328 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office Web Apps 2010 Service Pack 2	`4018360 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft Office Web Apps Server 2013 Service Pack 1	`4018344 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft SharePoint Enterprise Server 2016	`4018336 (Security Update)`	Important	Remote Code Execution	Maybe
Microsoft SharePoint Server 2013 Service Pack 1	`4011586 (Security Update)`	Important	Remote Code Execution	Maybe
Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2	`4018356 (Security Update)`	Important	Remote Code Execution	Maybe
Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1	`4018341 (Security Update)`	Important	Remote Code Execution	Maybe

Patches

10 patches

Article	Type	Restart
`4018343`	Security Update	Maybe
`4018311`	Security Update	Maybe
`4018330`	Security Update	Maybe
`4018328`	Security Update	Maybe
`4018360`	Security Update	Maybe
`4018344`	Security Update	Maybe
`4018336`	Security Update	Maybe
`4011586`	Security Update	Maybe
`4018356`	Security Update	Maybe
`4018341`	Security Update	Maybe

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

Jaanus Kääp of Clarified Security

References

MSRC Advisory MITRE NVD