CVE-2019-15681 Explained : Impact and Mitigation

A memory leak vulnerability in the VNC server code of LibVNC before commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a allows attackers to access stack memory, potentially leading to sensitive information disclosure and ASLR bypass.

Understanding CVE-2019-15681

This CVE involves a memory leak vulnerability in LibVNC's VNC server code, enabling unauthorized access to stack memory.

What is CVE-2019-15681?

The vulnerability in LibVNC's VNC server code allows attackers to read stack memory, potentially exposing sensitive information.
Exploiting this issue, combined with another vulnerability, can bypass ASLR and leak stack memory.

The Impact of CVE-2019-15681

Attackers can exploit this vulnerability through network connectivity, posing a risk of sensitive data exposure.

Technical Details of CVE-2019-15681

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The memory leak vulnerability in LibVNC's VNC server code allows unauthorized access to stack memory, potentially leading to information disclosure.

Affected Systems and Versions

Product: LibVNC
Vendor: Kaspersky
Version: 0.9.12

Exploitation Mechanism

Attackers can exploit this vulnerability through network connectivity, potentially bypassing ASLR and leaking stack memory.

Mitigation and Prevention

Protecting systems from CVE-2019-15681 requires immediate action and long-term security practices.

Immediate Steps to Take

Update LibVNC to the fixed version commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

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

Patching and Updates

Ensure all systems are updated to the patched version commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.