CVE-2020-0893 : Security Advisory and Response
Learn about CVE-2020-0893, a cross-site-scripting vulnerability in Microsoft SharePoint Server, enabling attackers to execute malicious scripts. Find mitigation steps and preventive measures here.
Microsoft SharePoint Server XSS Vulnerability
Understanding CVE-2020-0893
What is CVE-2020-0893?
A cross-site-scripting (XSS) vulnerability in Microsoft SharePoint Server allows specially crafted web requests to execute malicious scripts.
The Impact of CVE-2020-0893
The vulnerability can lead to spoofing attacks by malicious actors.
Technical Details of CVE-2020-0893
Vulnerability Description
- Vulnerability in Microsoft SharePoint Server's sanitization of web requests
Affected Systems and Versions
- Microsoft SharePoint Enterprise Server 2016
- Microsoft SharePoint Enterprise Server 2013 Service Pack 1
- Microsoft SharePoint Server 2019
Exploitation Mechanism
- Malicious actors exploit the XSS vulnerability to execute script-based attacks
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security updates from Microsoft
- Validate and sanitize user inputs to prevent XSS attacks
Long-Term Security Practices
- Conduct regular security assessments and penetration testing
- Educate users on safe browsing practices and phishing awareness
- Implement content security policies
Patching and Updates
- Regularly check for and apply security patches provided by Microsoft