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November 5, 2019
Severity
High
Analysis Summary
A vulnerability has been discovered in Microsoft Office for Mac, which could allow for remote code execution. In an email attack scenario, an attacker could exploit these vulnerabilities by sending a specially crafted file to a 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) that contains a specially crafted file designed to exploit this 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.
Impact
- Privilege access
- Remote Code Execution
Affected Vendors
Microsoft
Affected Products
Microsoft Office 2011 for Mac
Remediation
- Block SYLK files over web and email gateways.
- Block SYLK files in Microsoft Office 2011 for Mac.
- Enable the security setting “Disable all macros with notification”.
- Since Microsoft Office 2011 for Mac is end of life, update to a supported version immediately after appropriate testing because no patch is available for the 2011 version.