CVE-2019-19907 : Vulnerability Insights and Analysis

CVE-2019-19907 is a vulnerability in Kopano Groupware Core that allows unauthorized access beyond the boundaries of an array due to incorrect handling of an array copy while parsing ICal data.

Understanding CVE-2019-19907

What is CVE-2019-19907?

The function HrAddFBBlock in the file freebusyutil.cpp in Kopano Groupware Core version prior to 8.7.7 has a vulnerability that allows unauthorized access beyond the boundaries of an array. This is due to incorrect handling of an array copy while parsing ICal data.

The Impact of CVE-2019-19907

This vulnerability could be exploited by attackers to gain unauthorized access to sensitive information or execute arbitrary code on affected systems.

Technical Details of CVE-2019-19907

Vulnerability Description

The vulnerability lies in the function HrAddFBBlock in the file freebusyutil.cpp in Kopano Groupware Core version prior to 8.7.7, allowing unauthorized access beyond array boundaries.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: All versions prior to 8.7.7

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating ICal data to trigger incorrect handling of array copies, leading to unauthorized access beyond array boundaries.

Mitigation and Prevention

Immediate Steps to Take

Apply the security update provided by Kopano Groupware Core to patch the vulnerability.
Monitor system logs for any suspicious activities indicating exploitation of the vulnerability.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities from being exploited.
Implement network segmentation and access controls to limit the impact of potential breaches.

Patching and Updates

Ensure all systems running Kopano Groupware Core are updated to version 8.7.7 or later to mitigate the CVE-2019-19907 vulnerability.