CVE-2019-1203 : Security Advisory and Response
Learn about CVE-2019-1203, a cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server, its impact, affected versions, and mitigation steps to secure your systems.
A cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server can lead to security risks. Learn about the impact, affected systems, and mitigation steps.
Understanding CVE-2019-1203
Microsoft SharePoint Server is susceptible to a cross-site scripting (XSS) vulnerability, potentially allowing attackers to execute malicious scripts on webpages viewed by users.
What is CVE-2019-1203?
The vulnerability arises when SharePoint Server fails to properly sanitize specific web requests, enabling attackers to inject malicious scripts, leading to potential data theft or unauthorized actions.
The Impact of CVE-2019-1203
The presence of this XSS vulnerability can result in spoofing attacks, where malicious actors can impersonate legitimate users to gain unauthorized access or manipulate content within SharePoint environments.
Technical Details of CVE-2019-1203
Microsoft SharePoint Server's XSS vulnerability has the following technical aspects:
Vulnerability Description
- Identified as the 'Microsoft Office SharePoint XSS Vulnerability'
- Occurs due to inadequate sanitization of web requests
Affected Systems and Versions
- Microsoft SharePoint Enterprise Server 2016
- Microsoft SharePoint Enterprise Server 2013 Service Pack 1
- Microsoft SharePoint Server 2019
Exploitation Mechanism
- Attackers craft malicious web requests to inject scripts
- Scripts execute within the context of the user's session, potentially leading to unauthorized actions
Mitigation and Prevention
Protect your systems from CVE-2019-1203 with these steps:
Immediate Steps to Take
- Apply security patches provided by Microsoft
- Implement web application firewalls to filter and block malicious requests
- Educate users on identifying and avoiding suspicious links or content
Long-Term Security Practices
- Regularly update and patch SharePoint servers
- Conduct security audits and penetration testing to identify vulnerabilities
- Monitor web traffic for unusual patterns or malicious activities
Patching and Updates
- Stay informed about security advisories from Microsoft
- Promptly apply patches and updates to address known vulnerabilities