CVE-2020-10703 : Security Advisory and Response

A NULL pointer dereference vulnerability in libvirt API versions >= 3.10.0 and < 6.0.0 could allow unprivileged users to crash the libvirt daemon, leading to a denial of service.

Understanding CVE-2020-10703

This CVE involves a vulnerability in the libvirt API that could be exploited by attackers to cause a denial of service.

What is CVE-2020-10703?

CVE-2020-10703 is a NULL pointer dereference flaw in the libvirt API, affecting versions >= 3.10.0 and < 6.0.0. It allows unprivileged users to crash the libvirt daemon, potentially leading to a denial of service.

The Impact of CVE-2020-10703

The vulnerability could be exploited by unprivileged users with a read-only connection to crash the libvirt daemon, resulting in a potential denial of service.

Technical Details of CVE-2020-10703

This section provides detailed technical information about the CVE.

Vulnerability Description

A NULL pointer dereference was found in the libvirt API, affecting versions >= 3.10.0 and < 6.0.0. The flaw allows unprivileged users to crash the libvirt daemon.

Affected Systems and Versions

Product: libvirt
Vendor: libvirt
Versions Affected: >= 3.10.0, < 6.0.0

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Impact: High

Mitigation and Prevention

Protect your systems from CVE-2020-10703 with these mitigation strategies.

Immediate Steps to Take

Update libvirt to version 6.0.0 or higher to address the vulnerability.
Monitor for any unusual activity on the libvirt daemon.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access.
Regularly update and patch software to prevent known vulnerabilities.

Patching and Updates

Apply patches and updates provided by libvirt to fix the vulnerability.