CVE-2019-17662 : Vulnerability Insights and Analysis
Learn about CVE-2019-17662, a critical vulnerability in ThinVNC 1.0b1 allowing arbitrary file reading. Find out the impact, affected systems, exploitation method, and mitigation steps.
ThinVNC 1.0b1 is vulnerable to arbitrary file reading, potentially leading to the compromise of the VNC server. The authentication password stored in plain text is at risk of exposure through a directory traversal attack.
Understanding CVE-2019-17662
This CVE entry highlights a critical vulnerability in ThinVNC 1.0b1 that allows unauthorized access to sensitive files, including the authentication password.
What is CVE-2019-17662?
The vulnerability in ThinVNC 1.0b1 enables attackers to read arbitrary files, posing a severe threat to the security of the VNC server. Even with authentication enabled, the plain text storage of the authentication password makes it vulnerable to exploitation.
The Impact of CVE-2019-17662
The exploitation of this vulnerability can result in unauthorized access to critical files, potentially leading to a complete compromise of the VNC server's security. Attackers can leverage this flaw to extract sensitive information, including authentication credentials.
Technical Details of CVE-2019-17662
ThinVNC 1.0b1's vulnerability to arbitrary file reading and the implications it carries.
Vulnerability Description
The flaw in ThinVNC 1.0b1 allows attackers to read arbitrary files, including the plain text file storing the authentication password. This vulnerability persists even when authentication is activated during VNC server deployment.
Affected Systems and Versions
- Product: ThinVNC 1.0b1
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability can be exploited through a directory traversal attack vector like ../../ThinVnc.ini, enabling unauthorized access to critical files and the authentication password.
Mitigation and Prevention
Steps to mitigate the risks associated with CVE-2019-17662.
Immediate Steps to Take
- Disable ThinVNC services until a patch is available.
- Implement network segmentation to limit access to vulnerable systems.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Encrypt sensitive files and passwords to prevent unauthorized access.
- Regularly update and patch ThinVNC to address security vulnerabilities.
Patching and Updates
- Stay informed about security updates and patches released by ThinVNC.
- Apply patches promptly to secure the VNC server against known vulnerabilities.