CVE-2019-18388 : Security Advisory and Response
Learn about CVE-2019-18388, a vulnerability in virglrenderer version 0.8.0 allowing denial of service attacks by guest OS users through a NULL pointer dereference.
CVE-2019-18388 is a vulnerability found in version 0.8.0 of virglrenderer, leading to a denial of service attack caused by guest OS users through a NULL pointer dereference in the vrend_renderer.c file.
Understanding CVE-2019-18388
What is CVE-2019-18388?
The vulnerability in virglrenderer version 0.8.0 allows guest OS users to trigger a denial of service attack by exploiting a NULL pointer dereference in the vrend_renderer.c file.
The Impact of CVE-2019-18388
This vulnerability can be exploited by malicious users to cause a denial of service, potentially disrupting system operations and services.
Technical Details of CVE-2019-18388
Vulnerability Description
The vulnerability arises from a NULL pointer dereference in the vrend_renderer.c file of virglrenderer version 0.8.0.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Version: 0.8.0
Exploitation Mechanism
The vulnerability is triggered by malformed commands from guest OS users, leading to a NULL pointer dereference in the vrend_renderer.c file.
Mitigation and Prevention
Immediate Steps to Take
- Apply the security update provided by the vendor promptly.
- Monitor for any unusual system behavior that could indicate a denial of service attack.
Long-Term Security Practices
- Regularly update software and systems to patch known vulnerabilities.
- Implement access controls and restrictions to limit potential attack surfaces.
- Educate users on safe computing practices to prevent exploitation of vulnerabilities.
Patching and Updates
It is crucial to install the security update released by the vendor to address the vulnerability in virglrenderer version 0.8.0.