CVE-2019-15679 : Exploit Details and Defense Strategies

TightVNC version 1.3.10, developed by Kaspersky, is vulnerable to a heap buffer overflow in the InitialiseRFBConnection function, potentially allowing for arbitrary code execution through network connections.

Understanding CVE-2019-15679

This CVE identifies a critical vulnerability in TightVNC version 1.3.10, impacting systems using this specific version.

What is CVE-2019-15679?

The vulnerability in TightVNC version 1.3.10 lies in the InitialiseRFBConnection function, leading to a heap buffer overflow. This flaw can be exploited to execute unauthorized code, primarily through network channels.

The Impact of CVE-2019-15679

The exploitation of this vulnerability can result in severe consequences, including unauthorized remote code execution on affected systems.

Technical Details of CVE-2019-15679

TightVNC version 1.3.10's vulnerability is categorized under CWE-122: Heap-based Buffer Overflow.

Vulnerability Description

The flaw in the InitialiseRFBConnection function of TightVNC version 1.3.10 allows attackers to trigger a heap buffer overflow, potentially enabling the execution of arbitrary code.

Affected Systems and Versions

Product: TightVNC
Vendor: Kaspersky
Version: 1.3.10

Exploitation Mechanism

The vulnerability can be exploited through network connectivity, making it crucial to address to prevent unauthorized code execution.

Mitigation and Prevention

Taking immediate action and implementing long-term security practices are essential to mitigate the risks associated with CVE-2019-15679.

Immediate Steps to Take

Update TightVNC to a patched version that addresses the heap buffer overflow vulnerability.
Implement network security measures to restrict unauthorized access.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security audits and penetration testing to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories and updates from Kaspersky and relevant security authorities.
Continuously monitor for new patches and apply them to ensure system security.