CVE-2019-8274 : Exploit Details and Defense Strategies
Learn about CVE-2019-8274, a heap buffer overflow vulnerability in UltraVNC revision 1211 that allows unauthorized code execution. Find out how to mitigate this security risk.
UltraVNC revision 1211 has a heap buffer overflow vulnerability in the VNC server code within the file transfer offer handler, potentially allowing unauthorized code execution through network connectivity. The issue has been resolved in revision 1212.
Understanding CVE-2019-8274
This CVE involves a heap buffer overflow vulnerability in UltraVNC, which could be exploited for unauthorized code execution.
What is CVE-2019-8274?
The vulnerability in UltraVNC revision 1211 allows attackers to trigger a heap buffer overflow in the VNC server code, leading to potential execution of unauthorized code. The exploit can be carried out through network connectivity.
The Impact of CVE-2019-8274
Exploiting this vulnerability could result in unauthorized code execution on affected systems, posing a significant security risk. However, the issue has been addressed in revision 1212.
Technical Details of CVE-2019-8274
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in UltraVNC revision 1211 is a heap buffer overflow in the VNC server code within the file transfer offer handler, allowing potential execution of unauthorized code.
Affected Systems and Versions
- Product: UltraVNC
- Vendor: Kaspersky Lab
- Version: 1.2.2.3
Exploitation Mechanism
The vulnerability can be exploited through network connectivity, enabling attackers to trigger the heap buffer overflow and execute unauthorized code.
Mitigation and Prevention
To address and prevent the exploitation of CVE-2019-8274, follow these steps:
Immediate Steps to Take
- Update UltraVNC to revision 1212 or the latest version that includes the fix.
- Monitor network traffic for any suspicious activity that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update software and apply patches to mitigate known vulnerabilities.
- 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.