CVE-2020-1496 Explained : Impact and Mitigation
Learn about CVE-2020-1496, a remote code execution vulnerability in Microsoft Excel, potentially allowing system compromise. Find affected versions and mitigation steps.
A remote code execution vulnerability exists in Microsoft Excel software, potentially allowing an attacker to control the affected system. This CVE was published on 2020-08-17.
Understanding CVE-2020-1496
What is CVE-2020-1496?
A remote code execution vulnerability in Microsoft Excel permits an attacker to run arbitrary code within the current user's context, potentially leading to complete system compromise.
The Impact of CVE-2020-1496
- Successful exploitation can result in an attacker gaining control of the affected system.
- Various activities can be performed by the attacker, including program installation, data manipulation, and user rights modifications.
Technical Details of CVE-2020-1496
Vulnerability Description
The vulnerability arises from how Microsoft Excel handles objects in memory, leading to potential code execution by an attacker.
Affected Systems and Versions
- Microsoft Office 2019 (Version 19.0.0)
- Microsoft 365 Apps for Enterprise (Version 16.0.1)
- Microsoft Excel 2016 (Version 16.0.0.0)
- Microsoft Office 2016 (Version 16.0.0)
- Microsoft Excel 2010 Service Pack 2 (Version 13.0.0.0)
- Microsoft Excel 2013 Service Pack 1 (Version 15.0.0.0)
- Microsoft Office 2010 Service Pack 2 (Version 13.0.0.0)
Exploitation Mechanism
- Requires a user to open a specially crafted file in an affected Excel version.
- Exploit can be achieved via email or web-based attacks, convincing users to interact with malicious files.
- Remedied by correcting memory object handling in Microsoft Excel.
Mitigation and Prevention
Immediate Steps to Take
- Apply the security update provided by Microsoft to address the vulnerability.
- Exercise caution when opening files, especially from untrusted sources.
Long-Term Security Practices
- Keep systems and software updated to prevent vulnerabilities.
- Employ email and web browsing best practices to avoid falling victim to social engineering attacks.
Patching and Updates
Ensure that Microsoft Excel and related software are regularly updated with security patches to mitigate potential vulnerabilities.