CVE-2019-9875 : What You Need to Know
Learn about CVE-2019-9875, a critical vulnerability in Sitecore up to version 9.1 allowing attackers to execute arbitrary code. Find mitigation steps and long-term security practices here.
Sitecore up to version 9.1 is vulnerable to a critical anti CSRF module flaw that allows an authenticated attacker to execute arbitrary code by sending a serialized .NET object in an HTTP POST parameter.
Understanding CVE-2019-9875
The vulnerability in the anti CSRF module of Sitecore poses a significant risk as it enables attackers to execute malicious code on the system.
What is CVE-2019-9875?
The flaw in Sitecore's anti CSRF module allows authenticated attackers to execute any code of their choice by sending a serialized .NET object as an HTTP POST parameter.
The Impact of CVE-2019-9875
This vulnerability can lead to severe consequences, including unauthorized code execution and potential system compromise.
Technical Details of CVE-2019-9875
The technical aspects of the vulnerability provide insight into its nature and potential risks.
Vulnerability Description
The flaw in Sitecore's anti CSRF module allows attackers to execute arbitrary code by exploiting the deserialization of untrusted data.
Affected Systems and Versions
- Product: Sitecore
- Versions affected: Up to version 9.1
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a serialized .NET object as an HTTP POST parameter, triggering the execution of malicious code.
Mitigation and Prevention
Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2019-9875.
Immediate Steps to Take
- Apply security patches provided by Sitecore promptly.
- Monitor and restrict network traffic to detect and prevent potential exploitation attempts.
- Educate users on safe browsing practices and the risks associated with executing untrusted code.
Long-Term Security Practices
- Implement secure coding practices to prevent deserialization vulnerabilities.
- Conduct regular security assessments and penetration testing to identify and address potential weaknesses.
- Stay informed about security updates and best practices to enhance overall system security.
Patching and Updates
- Regularly update Sitecore to the latest version to ensure that security patches are applied.
- Stay informed about any new security advisories related to Sitecore and promptly apply recommended updates.