CVE-2020-1193 : Security Advisory and Response
Discover details about the CVE-2020-1193 vulnerability in Microsoft Excel software. Learn about affected systems, exploitation methods, impact, and mitigation steps.
A remote code execution vulnerability exists in Microsoft Excel software affecting various Microsoft Office versions.
Understanding CVE-2020-1193
This CVE highlights a critical vulnerability in Microsoft Excel that could allow an attacker to execute arbitrary code on the affected system, potentially leading to a compromise.
What is CVE-2020-1193?
This CVE identifies a remote code execution vulnerability in Microsoft Excel software due to improper handling of objects in memory. Successful exploitation could lead to the execution of arbitrary code within the user's context, potentially granting the attacker control over the system.
The Impact of CVE-2020-1193
- Severity: High (CVSS Base Score: 7.8)
- Attack Vector: Local
- Impact: An attacker could install programs, access, modify, or delete data, and create new user accounts with full rights.
Technical Details of CVE-2020-1193
This section covers the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability arises from Microsoft Excel's inadequate handling of objects in memory, allowing an attacker to exploit the software.
Affected Systems and Versions
- Microsoft Office 2019 (32-bit & x64-based Systems, Version 19.0.0)
- Microsoft Office 2019 for Mac (Version 16.0.0)
- Microsoft 365 Apps for Enterprise (32-bit & x64-based Systems, Version 16.0.1)
- Microsoft Office 2016 (32-bit & x64-based Systems, Version 16.0.0)
- Microsoft Office 2016 for Mac (Version 16.0.0)
- Microsoft Office 2010 Service Pack 2 (32-bit & x64-based Systems, Version 13.0.0.0)
- Microsoft Office 2013 Service Pack 1 (ARM64-based, 32-bit & x64-based Systems, Version 15.0.0)
Exploitation Mechanism
- Users must open a malicious file with an affected Excel version for exploitation.
- Attack scenarios include email attachments or specially crafted websites.
Mitigation and Prevention
Protect systems against this vulnerability through the following measures.
Immediate Steps to Take
- Apply the security update from Microsoft to address the vulnerability.
- Avoid opening files from untrusted or unknown sources.
Long-Term Security Practices
- Educate users on recognizing phishing attempts to prevent email-based attacks.
- Regularly update Microsoft Office products to ensure security patches are implemented.
Patching and Updates
- Ensure timely installation of security updates provided by Microsoft.