CVE-2017-7411 Explained : Impact and Mitigation

A vulnerability has been found in versions of Enalean Tuleap up to 9.6, allowing attackers to potentially execute remote code through a second-order PHP object injection.

Understanding CVE-2017-7411

This CVE relates to a security flaw in Enalean Tuleap versions up to 9.6 that enables malicious users to manipulate preference values through the REST API interface, leading to the injection of arbitrary PHP objects into the application scope.

What is CVE-2017-7411?

The vulnerability in User::getRecentElements() method utilizing the unserialize() function allows attackers to inject PHP objects, potentially resulting in Remote Code Execution.

The Impact of CVE-2017-7411

The vulnerability permits attackers to execute various attacks, including Remote Code Execution, by injecting malicious PHP objects into the application scope.

Technical Details of CVE-2017-7411

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The issue arises from the misuse of the unserialize() function in the User::getRecentElements() method, enabling the injection of arbitrary PHP objects by manipulating preference values.

Affected Systems and Versions

Enalean Tuleap versions up to 9.6 are impacted by this vulnerability.

Exploitation Mechanism

Malicious users can exploit the vulnerability by manipulating preference values through the REST API interface, injecting arbitrary PHP objects into the application scope.

Mitigation and Prevention

Protect your systems from CVE-2017-7411 with the following steps:

Immediate Steps to Take

Update Enalean Tuleap to version 9.6 or above to mitigate the vulnerability.
Monitor and restrict API access to prevent unauthorized manipulation of preference values.

Long-Term Security Practices

Regularly audit and review code that utilizes unserialize() to prevent similar vulnerabilities.
Educate developers on secure coding practices to avoid insecure deserialization vulnerabilities.

Patching and Updates

Apply patches and updates provided by Enalean to address the vulnerability and enhance system security.