CVE-2020-1500 : What You Need to Know
Discover the details of the CVE-2020-1500 Microsoft SharePoint Spoofing Vulnerability, its impact, affected systems, exploitation, and mitigation steps in this article.
In August 2020, Microsoft SharePoint servers were found to have a vulnerability allowing for spoofing attacks.
Understanding CVE-2020-1500
This CVE concerns a spoofing vulnerability in Microsoft SharePoint.
What is CVE-2020-1500?
A spoofing flaw in SharePoint Server allows an authenticated attacker to manipulate web requests, potentially leading to cross-site scripting attacks.
The Impact of CVE-2020-1500
- Threat actors could execute cross-site scripting attacks on affected systems.
- Attackers could impersonate users, change permissions, and inject malicious content.
Technical Details of CVE-2020-1500
This section delves into the technical specifics of the vulnerability.
Vulnerability Description
The flaw arises from inadequate sanitization of specific web requests to SharePoint servers, enabling attackers to exploit the system.
Affected Systems and Versions
- Microsoft SharePoint Enterprise Server 2016 (version 16.0.0)
- Microsoft SharePoint Enterprise Server 2013 Service Pack 1 (version 15.0.0)
- Microsoft SharePoint Server 2019 (version 16.0.0)
- Microsoft SharePoint Server 2010 Service Pack 2 (version 13.0.0.0)
- Platforms: x64-based Systems for all affected versions except for 2010 Service Pack 2 (platform: Unknown)
Exploitation Mechanism
Attackers can send crafted requests to manipulate SharePoint servers, subsequently executing cross-site scripting attacks.
Mitigation and Prevention
Following are the steps to mitigate and prevent this vulnerability.
Immediate Steps to Take
- Apply the provided security update promptly to ensure SharePoint servers sanitize web requests.
- Monitor and restrict user permissions to minimize the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch systems to address vulnerabilities promptly.
- Conduct security audits and penetration testing to identify and remediate potential weaknesses.
- Educate users on security best practices to prevent social engineering attacks.
Patching and Updates
- Implement updates and patches released by Microsoft to address the SharePoint spoofing vulnerability.