CVE-2019-13456 Explained : Impact and Mitigation

In FreeRADIUS versions 3.0 to 3.0.19, a vulnerability exists that can lead to the disclosure of sensitive information, potentially exposing user passwords.

Understanding CVE-2019-13456

This CVE pertains to a security flaw in FreeRADIUS versions 3.0 to 3.0.19 that could allow attackers to uncover user passwords.

What is CVE-2019-13456?

In FreeRADIUS versions 3.0 to 3.0.19, a flaw in the EAP-pwd handshake process can result in the unintentional exposure of password information, similar to the "Dragonblood" attack.

The Impact of CVE-2019-13456

The vulnerability could be exploited by attackers to reveal user passwords, posing a significant security risk to affected systems.

Technical Details of CVE-2019-13456

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

Vulnerability Description

The flaw in FreeRADIUS versions 3.0 to 3.0.19 causes failures in EAP-pwd handshakes, leading to the inadvertent disclosure of password information.

Affected Systems and Versions

FreeRADIUS versions 3.0 to 3.0.19

Exploitation Mechanism

Attackers can exploit this vulnerability to recover user passwords by taking advantage of the leaked information during the EAP-pwd handshake process.

Mitigation and Prevention

Protecting systems from CVE-2019-13456 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update FreeRADIUS to a patched version that addresses the vulnerability.
Monitor network traffic for any suspicious activity that could indicate exploitation attempts.

Long-Term Security Practices

Implement strong password policies and encourage users to use complex passwords.
Regularly review and update security measures to prevent similar vulnerabilities.

Patching and Updates

Apply patches provided by FreeRADIUS to fix the vulnerability and enhance system security.