CVE-2017-6920 : What You Need to Know

Drupal core version 8 prior to 8.3.4 has a vulnerability that enables attackers to execute arbitrary code due to issues in the PECL YAML parser.

Understanding CVE-2017-6920

Drupal core 8 before versions 8.3.4 allows remote attackers to execute arbitrary code due to the PECL YAML parser not handling PHP objects safely during certain operations.

What is CVE-2017-6920?

This CVE refers to a vulnerability in Drupal Core versions prior to 8.3.4 that allows remote attackers to execute arbitrary code.

The Impact of CVE-2017-6920

The vulnerability enables attackers to execute arbitrary code, posing a significant risk to the security and integrity of affected systems.

Technical Details of CVE-2017-6920

Drupal core version 8 prior to 8.3.4 is susceptible to remote code execution due to unsafe handling of PHP objects by the PECL YAML parser.

Vulnerability Description

The vulnerability in Drupal Core allows attackers to execute arbitrary code by exploiting the insecure handling of PHP objects during specific operations.

Affected Systems and Versions

Product: Drupal Core
Vendor: Drupal.org
Versions Affected: 8 prior to 8.3.4

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating PHP objects through the PECL YAML parser, enabling them to execute arbitrary code on the target system.

Mitigation and Prevention

Immediate Steps to Take:

Update Drupal Core to version 8.3.4 or later to mitigate the vulnerability.
Monitor for any signs of unauthorized access or malicious activities on the system. Long-Term Security Practices:
Regularly update and patch Drupal Core and its components to address known security issues.
Implement strong access controls and authentication mechanisms to prevent unauthorized access.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Stay informed about security advisories and best practices to enhance the overall security posture of the system.

Patching and Updates

Ensure timely installation of security patches and updates provided by Drupal.org to address vulnerabilities and enhance the security of the system.