CVE-2018-21247 : Vulnerability Insights and Analysis
Learn about CVE-2018-21247, a vulnerability in LibVNCServer before 0.9.13 that could expose uninitialized memory contents. Find out the impact, affected systems, exploitation risks, and mitigation steps.
A vulnerability has been identified in LibVNCServer prior to version 0.9.13. The flaw in the ConnectToRFBRepeater function of libvncclient/rfbproto.c could potentially lead to the disclosure of uninitialized memory contents.
Understanding CVE-2018-21247
This CVE entry describes a vulnerability in LibVNCServer that could result in the exposure of uninitialized memory contents.
What is CVE-2018-21247?
CVE-2018-21247 is a security vulnerability found in LibVNCServer before version 0.9.13. It involves an information leak in the ConnectToRFBRepeater function of libvncclient/rfbproto.c.
The Impact of CVE-2018-21247
The vulnerability could allow attackers to access uninitialized memory contents, potentially leading to sensitive data exposure or system compromise.
Technical Details of CVE-2018-21247
This section provides more in-depth technical details about the CVE-2018-21247 vulnerability.
Vulnerability Description
An issue was discovered in LibVNCServer before 0.9.13, resulting in an information leak of uninitialized memory contents in the ConnectToRFBRepeater function of libvncclient/rfbproto.c.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
The vulnerability could be exploited by malicious actors to read uninitialized memory contents, potentially extracting sensitive information.
Mitigation and Prevention
To address CVE-2018-21247 and enhance overall system security, consider the following mitigation strategies:
Immediate Steps to Take
- Update LibVNCServer to version 0.9.13 or later to mitigate the vulnerability.
- Monitor network traffic for any suspicious activities that could indicate exploitation attempts.
Long-Term Security Practices
- Implement secure coding practices to prevent memory-related vulnerabilities in software development.
- Conduct regular security assessments and audits to identify and address potential vulnerabilities proactively.
Patching and Updates
- Stay informed about security updates and patches released by LibVNCServer and promptly apply them to ensure the latest security fixes are in place.