CVE-2020-11056 Explained : Impact and Mitigation

In Sprout Forms before 3.9.0, a Server-Side Template Injection vulnerability exists, allowing the execution of Twig code. The issue has been addressed in version 3.9.0.

Understanding CVE-2020-11056

Sprout Forms prior to version 3.9.0 is susceptible to a potential code injection vulnerability, enabling the execution of Twig code.

What is CVE-2020-11056?

CVE-2020-11056 refers to a Server-Side Template Injection vulnerability in Sprout Forms before version 3.9.0, which could permit the execution of Twig code.

The Impact of CVE-2020-11056

The vulnerability has a CVSS base score of 7.4, categorizing it as high severity due to the potential for code injection and execution of arbitrary Twig code.

Technical Details of CVE-2020-11056

Sprout Forms version < 3.9.0 is affected by a code injection vulnerability that allows the execution of Twig code.

Vulnerability Description

The vulnerability in Sprout Forms allows attackers to inject and execute Twig code through custom fields in Notification Emails.

Affected Systems and Versions

Product: Sprout Forms
Vendor: barrelstrength
Versions Affected: < 3.9.0

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious input in custom fields within Notification Emails, leading to the execution of unauthorized Twig code.

Mitigation and Prevention

To address CVE-2020-11056 and enhance security:

Immediate Steps to Take

Update Sprout Forms to version 3.9.0 or later to mitigate the vulnerability.
Monitor for any unusual activities or unauthorized access.

Long-Term Security Practices

Regularly review and update security configurations and practices.
Educate users on secure coding practices and the risks of code injection vulnerabilities.

Patching and Updates

Apply security patches promptly to prevent exploitation of known vulnerabilities.