CVE-2023-39364 : Exploit Details and Defense Strategies

A security vulnerability has been identified in Cacti, an open-source operational monitoring and fault management framework, that could allow users with console access to be redirected to malicious websites during the password change process.

Understanding CVE-2023-39364

This vulnerability, assigned the CVE ID CVE-2023-39364, involves an open redirect in the change password functionality of Cacti, potentially exposing users to phishing attacks and malicious activities.

What is CVE-2023-39364?

In Cacti version 1.2.24, a flaw exists where a user can be redirected to an arbitrary website after changing their password through a specially crafted URL. This redirection occurs due to the mishandling of the 'ref' URL parameter in the 'auth_changepassword.php' file, allowing attackers to trick users into interacting with their malicious site.

The Impact of CVE-2023-39364

Exploiting this vulnerability could lead to users unknowingly visiting harmful websites, downloading malware, or disclosing sensitive information, posing a significant security risk to affected systems.

Technical Details of CVE-2023-39364

This section provides detailed insights into the vulnerability, including its description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The issue arises from the mishandling of the 'ref' URL parameter during the change password process, enabling an attacker to redirect users to malicious websites using crafted URLs.

Affected Systems and Versions

The vulnerability impacts Cacti version 1.2.24. Systems running versions earlier than 1.2.25 are susceptible to this security issue.

Exploitation Mechanism

Attackers can exploit this flaw by tricking users into changing their password through a maliciously crafted URL, subsequently directing them to malicious websites.

Mitigation and Prevention

To safeguard systems against CVE-2023-39364, immediate actions need to be taken along with implementing long-term security practices.

Immediate Steps to Take

Users are strongly advised to upgrade to Cacti version 1.2.25 or higher to mitigate the risk of being redirected to malicious websites during the password change process.

Long-Term Security Practices

Maintain vigilance against phishing attempts, regularly update software to the latest versions, and educate users on practicing caution while interacting with URLs and web content.

Patching and Updates

Stay informed about security advisories and apply patches promptly to protect systems from potential threats.