CVE-2020-16945 : What You Need to Know
Learn about CVE-2020-16945, a cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server that allows attackers to execute malicious scripts on affected systems. Find out how to mitigate this security risk.
A cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server allows attackers to execute malicious scripts on affected systems.
Understanding CVE-2020-16945
This CVE involves a security flaw in Microsoft SharePoint Server that could lead to unauthorized access and malicious actions.
What is CVE-2020-16945?
A vulnerability in SharePoint Server enables authenticated attackers to execute cross-site scripting attacks, potentially compromising user data and system integrity.
The Impact of CVE-2020-16945
Exploiting this vulnerability could allow attackers to read unauthorized content, manipulate user permissions, and inject malicious scripts into users' browsers.
Technical Details of CVE-2020-16945
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The XSS vulnerability arises from inadequate sanitization of web requests, enabling attackers to send crafted requests to compromise system security.
Affected Systems and Versions
- Microsoft SharePoint Enterprise Server 2016 (Version 16.0.0)
- Microsoft SharePoint Server 2019 (Version 16.0.0)
- Microsoft SharePoint Foundation 2013 Service Pack 1 (Version 15.0.0)
- Platforms: x64-based Systems
Exploitation Mechanism
Attackers exploit the vulnerability by sending specially crafted requests to SharePoint servers, allowing them to execute cross-site scripting attacks.
Mitigation and Prevention
Protecting systems from CVE-2020-16945 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply the security update provided by Microsoft to address the vulnerability.
- Monitor and restrict user permissions to minimize the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch SharePoint servers to prevent future vulnerabilities.
- Educate users on safe browsing practices and the risks of clicking on suspicious links.
Patching and Updates
Ensure timely installation of security patches and updates to mitigate the risk of exploitation.