CVE-2018-20123 : Security Advisory and Response

This CVE-2018-20123 article provides insights into a memory leak vulnerability in QEMU's pvrdma_realize function.

Understanding CVE-2018-20123

What is CVE-2018-20123?

The vulnerability lies in QEMU's pvrdma_realize function in hw/rdma/vmw/pvrdma_main.c, leading to a memory leak during initialization errors.

The Impact of CVE-2018-20123

The vulnerability could be exploited by attackers to cause a denial of service or potentially execute arbitrary code on the affected system.

Technical Details of CVE-2018-20123

Vulnerability Description

QEMU's pvrdma_realize function in hw/rdma/vmw/pvrdma_main.c suffers from a memory leak after an initialization error.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Version: n/a

Exploitation Mechanism

The vulnerability can be exploited by triggering an initialization error in the pvrdma_realize function, leading to a memory leak.

Mitigation and Prevention

Immediate Steps to Take

Apply vendor patches or updates as soon as they are available.
Monitor vendor advisories and security mailing lists for any updates related to this vulnerability.

Long-Term Security Practices

Regularly update and patch all software and systems to prevent known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.
Conduct regular security assessments and penetration testing to identify and address security weaknesses.

Patching and Updates

Ensure that QEMU software is updated to the latest version to mitigate the memory leak vulnerability in the pvrdma_realize function.