CVE-2017-7396 Explained : Impact and Mitigation

TigerVNC 1.7.1 server is affected by a memory leak vulnerability that can be exploited by an unauthenticated client.

Understanding CVE-2017-7396

This CVE involves a memory leak issue in the TigerVNC 1.7.1 server that can be triggered by an unauthenticated client.

What is CVE-2017-7396?

A small memory leak exists in the server of TigerVNC 1.7.1, specifically in CConnection.cxx CConnection::CConnection, which can be exploited by an unauthenticated client.

The Impact of CVE-2017-7396

The vulnerability allows an unauthenticated client to cause a memory leak in the TigerVNC 1.7.1 server, potentially leading to denial of service or other security risks.

Technical Details of CVE-2017-7396

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in TigerVNC 1.7.1 allows an unauthenticated client to trigger a memory leak in the server through CConnection.cxx CConnection::CConnection.

Affected Systems and Versions

Affected Version: TigerVNC 1.7.1
Systems: Not specified

Exploitation Mechanism

The vulnerability can be exploited by an unauthenticated client sending specific requests to the TigerVNC 1.7.1 server, causing a memory leak.

Mitigation and Prevention

Protecting systems from CVE-2017-7396 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply patches or updates provided by the vendor to address the memory leak vulnerability.
Monitor network traffic for any suspicious activity that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Implement strong authentication mechanisms to prevent unauthorized access to the server.
Regularly update and patch software to mitigate known vulnerabilities.

Patching and Updates

Check for security advisories from TigerVNC or relevant vendors for patches addressing CVE-2017-7396.
Apply updates promptly to secure systems against potential exploits.