CVE-2023-25267 : Vulnerability Insights and Analysis

This CVE involves an issue discovered in GFI Kerio Connect 9.4.1 patch 1, which has been fixed in version 10.0.0. The vulnerability is related to a stack-based Buffer Overflow in the webmail component's 2FASetup function, triggered by an authenticated request with a long primaryEMailAddress field to the webmail/api/jsonrpc URI.

Understanding CVE-2023-25267

This section will provide an overview of the CVE-2023-25267 vulnerability, its impact, technical details, affected systems, and mitigation steps.

What is CVE-2023-25267?

CVE-2023-25267 is a security vulnerability identified in GFI Kerio Connect 9.4.1 patch 1 that allows for a stack-based Buffer Overflow in the webmail component's 2FASetup function. An attacker can exploit this issue by sending a specially crafted authenticated request with a long primaryEMailAddress field to a specific URI.

The Impact of CVE-2023-25267

The impact of this vulnerability is significant as it allows an attacker to execute arbitrary code on the target system. This could result in unauthorized access, data theft, or complete system compromise.

Technical Details of CVE-2023-25267

This section delves into the technical aspects of the CVE, including vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability arises from a stack-based Buffer Overflow in the 2FASetup function of the webmail component in GFI Kerio Connect 9.4.1 patch 1.

Affected Systems and Versions

The affected product is GFI Kerio Connect 9.4.1 patch 1, with the vulnerability resolved in version 10.0.0.

Exploitation Mechanism

To exploit this vulnerability, an attacker needs to send a specifically crafted authenticated request with a long primaryEMailAddress field to the webmail/api/jsonrpc URI.

Mitigation and Prevention

In light of CVE-2023-25267, it is crucial to take immediate steps to mitigate the risks associated with this vulnerability.

Immediate Steps to Take

Organizations using GFI Kerio Connect 9.4.1 patch 1 should update to version 10.0.0 or apply the necessary patches provided by the vendor. Additionally, monitoring network traffic for suspicious activities can help detect potential exploitation attempts.

Long-Term Security Practices

Implementing network segmentation, access controls, and regular security assessments can enhance the overall security posture of the organization and prevent similar vulnerabilities in the future.

Patching and Updates

Regularly checking for software updates and promptly applying patches from trusted sources is essential to address known vulnerabilities and protect systems from potential cyber threats.