CVE-2019-8269 : Exploit Details and Defense Strategies

UltraVNC revision 1206 has a stack-based buffer overflow vulnerability in the VNC client code within the FileTransfer module, potentially leading to a denial of service (DoS) situation. This CVE has been resolved in revision 1207.

Understanding CVE-2019-8269

This section provides insights into the nature and impact of CVE-2019-8269.

What is CVE-2019-8269?

CVE-2019-8269 is a stack-based buffer overflow vulnerability found in UltraVNC revision 1206, specifically in the VNC client code of the FileTransfer module. The vulnerability could be exploited through network connectivity.

The Impact of CVE-2019-8269

The vulnerability could result in a denial of service (DoS) condition, potentially disrupting the normal operation of the affected system.

Technical Details of CVE-2019-8269

Explore the technical aspects of CVE-2019-8269.

Vulnerability Description

The VNC client code in UltraVNC revision 1206 is susceptible to a stack-based buffer overflow, which could be exploited to trigger a DoS situation. The issue has been addressed in revision 1207.

Affected Systems and Versions

Product: UltraVNC
Vendor: Kaspersky Lab
Vulnerable Version: 1.2.2.3

Exploitation Mechanism

The vulnerability can be exploited through network connectivity, allowing attackers to potentially execute a DoS attack.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2019-8269.

Immediate Steps to Take

Update UltraVNC to revision 1207 or a version that includes the fix.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Ensure that all systems running UltraVNC are regularly updated with the latest patches and security fixes.