CVE-2019-15680 : What You Need to Know

TightVNC version 1.3.10, developed by Kaspersky, contains a critical vulnerability that can lead to a Denial of System (DoS) attack. This CVE-2019-15680 is associated with a null pointer dereference in the HandleZlibBPP function, making it exploitable through network connectivity.

Understanding CVE-2019-15680

This section provides insights into the nature and impact of the CVE-2019-15680 vulnerability.

What is CVE-2019-15680?

CVE-2019-15680 is a vulnerability in TightVNC version 1.3.10 that allows for a null pointer dereference in the HandleZlibBPP function, potentially resulting in a Denial of System (DoS) attack.

The Impact of CVE-2019-15680

The vulnerability in TightVNC version 1.3.10 can have the following consequences:

Denial of System (DoS) attack
Exploitable through network connectivity

Technical Details of CVE-2019-15680

This section delves into the technical aspects of the CVE-2019-15680 vulnerability.

Vulnerability Description

The vulnerability involves a null pointer dereference in the HandleZlibBPP function of TightVNC version 1.3.10, which can be exploited to launch a Denial of System (DoS) attack.

Affected Systems and Versions

Product: TightVNC
Vendor: Kaspersky
Version: 1.3.10

Exploitation Mechanism

The vulnerability can be exploited through network connectivity, allowing malicious actors to trigger a Denial of System (DoS) attack.

Mitigation and Prevention

Here are the steps to mitigate and prevent the CVE-2019-15680 vulnerability:

Immediate Steps to Take

Update TightVNC to a patched version that addresses the null pointer dereference issue.
Implement network segmentation to limit the exposure of vulnerable systems.
Monitor network traffic for any suspicious activity that could indicate an ongoing attack.

Long-Term Security Practices

Regularly update software and apply security patches to prevent known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses.
Educate users and IT staff about safe computing practices and the importance of cybersecurity.

Patching and Updates

Ensure that all systems running TightVNC version 1.3.10 are updated with the latest patches provided by Kaspersky to mitigate the CVE-2019-15680 vulnerability.