CVE-2019-15693 : Security Advisory and Response

TigerVNC version prior to 1.10.1 is vulnerable to a heap buffer overflow in the TightDecoder::FilterGradient function, potentially leading to remote code execution.

Understanding CVE-2019-15693

This CVE involves a critical vulnerability in TigerVNC that could allow attackers to execute remote code.

What is CVE-2019-15693?

The heap buffer overflow vulnerability in TigerVNC version earlier than 1.10.1 can be observed in the TightDecoder::FilterGradient function. If this vulnerability is exploited, it has the potential to allow remote code execution. This attack seems to be feasible through network connectivity.

The Impact of CVE-2019-15693

Exploitation of this vulnerability could potentially result in remote code execution, posing a significant threat to affected systems and data.

Technical Details of CVE-2019-15693

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability is a heap buffer overflow in the TightDecoder::FilterGradient function of TigerVNC versions prior to 1.10.1.

Affected Systems and Versions

Product: TigerVNC
Vendor: Kaspersky
Vulnerable Version: 1.10.0

Exploitation Mechanism

The vulnerability can be exploited through network connectivity, allowing attackers to potentially execute remote code.

Mitigation and Prevention

Protecting systems from CVE-2019-15693 requires immediate action and long-term security measures.

Immediate Steps to Take

Update TigerVNC to version 1.10.1 or later to mitigate the vulnerability.
Monitor network traffic for any suspicious activity that could indicate exploitation attempts.

Long-Term Security Practices

Implement network segmentation to limit the impact of potential attacks.
Regularly update and patch software to address known vulnerabilities.

Patching and Updates

Apply security patches promptly to ensure systems are protected from known vulnerabilities.