CVE-2019-8277 : Vulnerability Insights and Analysis
Learn about CVE-2019-8277, a vulnerability in UltraVNC revision 1211 allowing unauthorized access to stack memory and information disclosure. Find out how to mitigate the risks and prevent exploitation.
UltraVNC revision 1211 contains multiple memory leaks (CWE-665) in the VNC server code, potentially leading to unauthorized access to stack memory and information disclosure. This CVE has been addressed in revision 1212.
Understanding CVE-2019-8277
The VNC server code in UltraVNC revision 1211 has been found to have multiple instances of memory leaks, posing a risk for unauthorized access to stack memory and potential information disclosure. When combined with another vulnerability, it could enable the leakage of stack memory and bypassing of ASLR. This attack seems to be exploitable through network connectivity.
What is CVE-2019-8277?
The CVE-2019-8277 vulnerability involves multiple memory leaks in UltraVNC revision 1211, allowing attackers to read stack memory and potentially disclose sensitive information.
The Impact of CVE-2019-8277
- Unauthorized access to stack memory
- Potential information disclosure
- Possibility of bypassing ASLR
- Exploitable through network connectivity
Technical Details of CVE-2019-8277
UltraVNC revision 1211 has the following technical details:
Vulnerability Description
The VNC server code in UltraVNC revision 1211 contains multiple memory leaks, specifically CWE-665.
Affected Systems and Versions
- Product: UltraVNC
- Vendor: Kaspersky Lab
- Version: revision 1211
Exploitation Mechanism
- Attackers can exploit the memory leaks to read stack memory and potentially disclose sensitive information.
Mitigation and Prevention
To address CVE-2019-8277, consider the following steps:
Immediate Steps to Take
- Update to the latest revision, 1212, where the vulnerabilities have been resolved.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update software and apply patches promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Conduct regular security assessments and penetration testing.
Patching and Updates
- Ensure all systems are updated to the latest revision, 1212, to mitigate the risks associated with CVE-2019-8277.