CVE-2017-11877 : Vulnerability Insights and Analysis
Learn about CVE-2017-11877 affecting Microsoft Excel versions 2007, 2010, 2013, 2016, and more. Find mitigation steps and prevention measures to secure your systems.
A vulnerability, known as "Microsoft Excel Security Feature Bypass Vulnerability," affects various versions of Microsoft Excel and Microsoft Office, allowing a security feature bypass.
Understanding CVE-2017-11877
This CVE identifies a security feature bypass vulnerability in Microsoft Excel versions.
What is CVE-2017-11877?
The vulnerability allows a security feature bypass in Microsoft Excel versions, including Excel 2007, 2010, 2013, 2016, and others, by not enforcing macro settings on Excel documents.
The Impact of CVE-2017-11877
This vulnerability could be exploited by attackers to bypass security features, potentially leading to unauthorized access or execution of malicious code.
Technical Details of CVE-2017-11877
This section provides technical details of the vulnerability.
Vulnerability Description
The vulnerability in Microsoft Excel versions allows for a security feature bypass by not enforcing macro settings on Excel documents.
Affected Systems and Versions
- Microsoft Excel 2007 Service Pack 3
- Microsoft Excel 2010 Service Pack 2
- Microsoft Excel 2013 Service Pack 1
- Microsoft Excel 2013 RT Service Pack 1
- Microsoft Excel 2016
- Microsoft Office Compatibility Pack Service Pack 3
- Microsoft Excel Viewer 2007 Service Pack 3
- Microsoft Excel 2016 for Mac
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting malicious Excel documents with macros that can execute arbitrary code when opened in the affected versions.
Mitigation and Prevention
Protecting systems from CVE-2017-11877 is crucial to maintaining security.
Immediate Steps to Take
- Disable macros in Excel documents as a temporary measure to prevent exploitation.
- Exercise caution when opening Excel files from untrusted sources.
Long-Term Security Practices
- Regularly update Microsoft Office and Excel to the latest versions to patch known vulnerabilities.
- Educate users on safe Excel document handling practices to prevent malicious attacks.
Patching and Updates
- Apply security updates provided by Microsoft to address the security feature bypass vulnerability in affected versions of Excel and Microsoft Office.