CVE-2017-12978 : Security Advisory and Response

Cacti before version 1.1.18 is vulnerable to a cross-site scripting (XSS) attack that can be exploited by an authenticated user. The vulnerability lies in the manipulation of the title field when adding an external link in the lib/html.php file.

Understanding CVE-2017-12978

This CVE entry describes a specific security vulnerability in Cacti versions prior to 1.1.18.

What is CVE-2017-12978?

CVE-2017-12978 is an XSS vulnerability that allows an authenticated user to inject malicious scripts by tampering with the title field while adding an external link in Cacti's lib/html.php file.

The Impact of CVE-2017-12978

The exploitation of this vulnerability can lead to unauthorized access, data theft, and potential compromise of the affected Cacti system.

Technical Details of CVE-2017-12978

This section provides more in-depth technical insights into the CVE-2017-12978 vulnerability.

Vulnerability Description

The XSS vulnerability in Cacti versions earlier than 1.1.18 arises from improper input validation in the title field of external links added by authenticated users in the lib/html.php file.

Affected Systems and Versions

Product: Cacti
Vendor: N/A
Versions Affected: All versions before 1.1.18

Exploitation Mechanism

The vulnerability can be exploited by an authenticated user manipulating the title field when adding an external link, allowing the injection of malicious scripts into the Cacti application.

Mitigation and Prevention

Protecting systems from CVE-2017-12978 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade Cacti to version 1.1.18 or later to mitigate the XSS vulnerability.
Regularly monitor and review external links added by users to detect any suspicious activities.

Long-Term Security Practices

Implement strict input validation mechanisms to prevent XSS attacks.
Educate users on secure practices when adding content to Cacti.

Patching and Updates

Stay informed about security updates and patches released by Cacti.
Apply patches promptly to ensure the system is protected against known vulnerabilities.