CVE-2021-43242 : Vulnerability Insights and Analysis
Learn about CVE-2021-43242, a HIGH severity Spoofing vulnerability in Microsoft SharePoint Server impacting versions 2016, 2019, Subscription Edition, and Foundation 2013 Service Pack. Find out mitigation steps.
Microsoft SharePoint Server Spoofing Vulnerability was published on December 15, 2021, with a base severity of HIGH.
Understanding CVE-2021-43242
This CVE impacts various versions of Microsoft SharePoint Server, potentially allowing Spoofing.
What is CVE-2021-43242?
The vulnerability in Microsoft SharePoint Server could permit Spoofing attacks.
The Impact of CVE-2021-43242
Exploitation could result in a HIGH severity threat, affecting confidentiality and integrity.
Technical Details of CVE-2021-43242
Microsoft SharePoint Server is susceptible to Spoofing attacks.
Vulnerability Description
The vulnerability allows attackers to carry out Spoofing attacks on affected systems.
Affected Systems and Versions
- Microsoft SharePoint Enterprise Server 2016 (less than 16.0.5254.1000)
- Microsoft SharePoint Server 2019 (less than 16.0.10381.20001)
- Microsoft SharePoint Server Subscription Edition (less than 16.0.14326.20620)
- Microsoft SharePoint Foundation 2013 Service Pack 1 (less than 15.0.5407.1000)
Exploitation Mechanism
Attackers can exploit this vulnerability to impersonate users or entities.
Mitigation and Prevention
Steps to enhance security post CVE-2021-43242:
Immediate Steps to Take
- Apply official patches promptly
- Monitor and restrict suspicious activity
Long-Term Security Practices
- Conduct regular security audits
- Implement access controls and user authentication
- Educate users on phishing and social engineering
Patching and Updates
Ensure all systems running affected versions of Microsoft SharePoint Server are updated with the latest security patches.