CVE-2020-16953 : Security Advisory and Response

Microsoft SharePoint Server is affected by an information disclosure vulnerability that could allow an attacker to access sensitive information. This CVE-2020-16953 was published on October 16, 2020.

Understanding CVE-2020-16953

This vulnerability impacts various versions of Microsoft SharePoint Server, potentially leading to information disclosure.

What is CVE-2020-16953?

An information disclosure vulnerability in Microsoft SharePoint Server arises from improper handling of objects in memory, enabling attackers to extract data for further system compromise.

The Impact of CVE-2020-16953

Exploiting this vulnerability could result in unauthorized access to critical information stored within the SharePoint Server, posing a risk of data breaches and system compromise.

Technical Details of CVE-2020-16953

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability stems from Microsoft SharePoint Server's inadequate management of objects in memory, allowing attackers to retrieve sensitive data.

Affected Systems and Versions

Microsoft SharePoint Enterprise Server 2016 (Version 16.0.0)
Microsoft SharePoint Server 2019 (Version 16.0.0)
Microsoft SharePoint Foundation 2010 Service Pack 2 (Version 13.0.0)
Microsoft SharePoint Foundation 2013 Service Pack 1 (Version 15.0.0)

Exploitation Mechanism

To exploit this vulnerability, an attacker must log in to the affected system and execute a specially crafted application to retrieve sensitive information.

Mitigation and Prevention

Protecting systems from CVE-2020-16953 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the security update provided by Microsoft to address the vulnerability.
Monitor system logs for any suspicious activities that could indicate exploitation attempts.
Restrict access to SharePoint servers to authorized personnel only.

Long-Term Security Practices

Regularly update and patch Microsoft SharePoint Server to mitigate future vulnerabilities.
Conduct security training for employees to recognize and report potential security threats.

Patching and Updates

Ensure timely installation of security patches and updates released by Microsoft to safeguard against known vulnerabilities.