CVE-2019-10913 : Security Advisory and Response

In previous versions of Symfony, a vulnerability related to HTTP Methods was identified, potentially leading to SQL injection or XSS attacks.

Understanding CVE-2019-10913

This CVE pertains to a specific vulnerability in Symfony versions prior to 2.7.51, 2.8.x before 2.8.50, 3.x before 3.4.26, 4.x before 4.1.12, and 4.2.x before 4.2.7.

What is CVE-2019-10913?

This vulnerability arises when HTTP Methods are provided as verbs or through the override header without proper validation, posing a risk of SQL injection or XSS attacks. It is specific to the symfony/http-foundation component.

The Impact of CVE-2019-10913

The vulnerability could potentially allow malicious actors to execute SQL injection or cross-site scripting attacks, compromising the security and integrity of the affected systems.

Technical Details of CVE-2019-10913

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue stems from the improper validation of HTTP Methods provided as verbs or through the override header in Symfony versions mentioned, potentially leading to SQL injection or XSS vulnerabilities.

Affected Systems and Versions

Symfony versions prior to 2.7.51, 2.8.x before 2.8.50, 3.x before 3.4.26, 4.x before 4.1.12, and 4.2.x before 4.2.7 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by providing malicious HTTP Methods as verbs or through the override header, bypassing proper validation and potentially executing SQL injection or XSS attacks.

Mitigation and Prevention

Protecting systems from CVE-2019-10913 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Symfony to versions 2.7.51, 2.8.50, 3.4.26, 4.1.12, or 4.2.7 to mitigate the vulnerability.
Implement strict input validation to prevent unauthorized HTTP Methods.

Long-Term Security Practices

Regularly monitor and update Symfony and its components to address security vulnerabilities promptly.
Educate developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Apply patches provided by Symfony to fix the vulnerability and enhance the security of the affected systems.