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CVE-2020-0933 : Security Advisory and Response

Learn about CVE-2020-0933, a cross-site-scripting vulnerability in Microsoft SharePoint Server allowing attackers to execute malicious scripts. Find mitigation steps and affected versions.

A cross-site-scripting (XSS) vulnerability exists in Microsoft SharePoint Server, potentially enabling spoofing attacks.

Understanding CVE-2020-0933

This CVE involves a security vulnerability in Microsoft SharePoint Server that could allow malicious actors to conduct cross-site scripting attacks.

What is CVE-2020-0933?

A cross-site-scripting (XSS) vulnerability exists in Microsoft SharePoint Server due to inadequate sanitization of web requests, allowing attackers to execute malicious scripts in the context of the user's browser.

The Impact of CVE-2020-0933

This vulnerability could be exploited by attackers to execute arbitrary code, steal sensitive information, and perform actions on behalf of authenticated users, potentially leading to unauthorized data disclosure or manipulation.

Technical Details of CVE-2020-0933

Vulnerability Description

The vulnerability arises from the improper handling of specially crafted web requests.

Affected Systems and Versions

        Microsoft SharePoint Enterprise Server 2016
        Microsoft SharePoint Server 2019
        Microsoft SharePoint Foundation 2013 Service Pack 1

Exploitation Mechanism

By sending a specially crafted web request to the affected SharePoint server, attackers can inject malicious scripts and execute unauthorized actions.

Mitigation and Prevention

Immediate Steps to Take

        Apply the latest security patches provided by Microsoft to address the vulnerability.
        Implement web application firewalls to filter out malicious web requests.
        Regularly monitor and audit web traffic for suspicious activities.

Long-Term Security Practices

        Educate users on how to identify and report suspicious web content and activities.
        Conduct regular security assessments and code reviews to identify and remediate XSS vulnerabilities.

Patching and Updates

Ensure timely installation of security updates and patches released by Microsoft to mitigate the risk of exploitation.

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