CVE-2019-14466 Explained : Impact and Mitigation

In GONICUS GOsa 2.7.5.2, a vulnerability in the GOsa_Filter_Settings cookie allows an authenticated attacker to delete files remotely by manipulating the cookie value.

Understanding CVE-2019-14466

This CVE involves a PHP objection injection vulnerability that enables a remote attacker to delete files via a crafted cookie value.

What is CVE-2019-14466?

The GOsa_Filter_Settings cookie in GONICUS GOsa 2.7.5.2 is susceptible to PHP objection injection, allowing a remote authenticated attacker to delete files within the user account running the web server.

The Impact of CVE-2019-14466

The vulnerability permits attackers to delete files remotely, compromising the integrity and confidentiality of the affected system.

Technical Details of CVE-2019-14466

The technical aspects of this CVE are as follows:

Vulnerability Description

The vulnerability arises from the misuse of the unserialize function to restore filter settings from a cookie, enabling the attacker to delete files.

Affected Systems and Versions

Product: GONICUS GOsa 2.7.5.2
Vendor: N/A
Version: N/A

Exploitation Mechanism

The attack is executed by an authenticated attacker manipulating the GOsa_Filter_Settings cookie value to perform file deletions within the user account running the web server.

Mitigation and Prevention

To address CVE-2019-14466, consider the following steps:

Immediate Steps to Take

Disable unserialize function in PHP settings
Regularly monitor and review cookie values for anomalies

Long-Term Security Practices

Implement input validation mechanisms to prevent injection attacks
Conduct regular security audits and code reviews

Patching and Updates

Apply patches or updates provided by the vendor to fix the vulnerability