CVE-2019-18661 Explained : Impact and Mitigation

A vulnerability has been discovered in Fastweb FASTGate 1.0.1b devices that allows a partial bypass of the authentication process, enabling attackers to view all web pages within the administration console without gaining full administrative control.

Understanding CVE-2019-18661

This CVE entry describes a security issue in Fastweb FASTGate 1.0.1b devices that could be exploited to bypass authentication partially.

What is CVE-2019-18661?

The vulnerability in Fastweb FASTGate 1.0.1b devices allows attackers to manipulate a specific function's return value, granting them the ability to view all web pages within the administration console.

The Impact of CVE-2019-18661

Although this vulnerability does not provide full administrative control over the device, it does allow unauthorized access to sensitive information within the administration console.

Technical Details of CVE-2019-18661

This section provides more in-depth technical details about the CVE.

Vulnerability Description

The vulnerability in Fastweb FASTGate 1.0.1b devices enables a partial authentication bypass by changing the return value of a specific function from 0 to 1.

Affected Systems and Versions

Product: Fastweb FASTGate 1.0.1b
Vendor: Fastweb
Version: 1.0.1b

Exploitation Mechanism

Attackers can exploit this vulnerability by altering the return value of the check_pwd function, allowing them to view all web pages within the administration console.

Mitigation and Prevention

Protecting systems from CVE-2019-18661 requires immediate actions and long-term security practices.

Immediate Steps to Take

Monitor network traffic for any suspicious activities related to authentication processes.
Implement strong password policies and multi-factor authentication to enhance security.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential weaknesses.

Patching and Updates

Fastweb FASTGate users should apply patches and updates provided by the vendor to mitigate the vulnerability and enhance system security.