CVE-2020-17129 : Exploit Details and Defense Strategies
Learn about CVE-2020-17129, a Remote Code Execution vulnerability in Microsoft Excel with a CVSS base score of 7.8. Find out affected systems, exploitation details, and mitigation steps.
Microsoft Excel Remote Code Execution Vulnerability was published on December 9, 2020, with a CVSS base score of 7.8.
Understanding CVE-2020-17129
This CVE involves a Remote Code Execution vulnerability in Microsoft Excel.
What is CVE-2020-17129?
The CVE-2020-17129 is a security vulnerability that allows remote attackers to execute arbitrary code on the target system by enticing a user to open a specially crafted file using a vulnerable version of Microsoft Excel.
The Impact of CVE-2020-17129
The impact of this vulnerability is rated as HIGH, with a CVSS base score of 7.8. Successful exploitation could lead to unauthorized access, data manipulation, and potential system compromise.
Technical Details of CVE-2020-17129
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows remote attackers to execute arbitrary code on the target system by exploiting a flaw in Microsoft Excel.
Affected Systems and Versions
- Microsoft Office 2019 (Version 19.0.0)
- Microsoft Office Online Server (Version 16.0.1)
- Microsoft 365 Apps for Enterprise (Version 16.0.1)
- Microsoft Excel 2016 (Version 16.0.0.0)
- Microsoft Excel 2010 Service Pack 2 (Version 13.0.0.0)
- Microsoft Excel 2013 Service Pack 1 (Version 15.0.0.0)
- Microsoft Office Web Apps 2013 Service Pack 1 (Version 15.0.0.0)
Exploitation Mechanism
The vulnerability is exploited by enticing a user to open a specially crafted file using the affected versions of Microsoft Excel, leading to the execution of malicious code.
Mitigation and Prevention
Protect your systems from CVE-2020-17129 with the following steps:
Immediate Steps to Take
- Update Microsoft Excel and related products to the latest security patches.
- Be cautious when opening files from untrusted sources.
- Implement security best practices for email and file attachments.
Long-Term Security Practices
- Regularly update and patch all software and applications.
- Educate users on recognizing and avoiding phishing attempts.
- Monitor network traffic for any suspicious activity.
Patching and Updates
Ensure timely installation of security updates and patches provided by Microsoft to address the CVE-2020-17129 vulnerability.