CVE-2023-27806 Explained : Impact and Mitigation

This CVE-2023-27806 was published on April 7, 2023, and was discovered in the H3C Magic R100 R100V100R005.bin firmware. It involves a stack overflow vulnerability in the ipqos_lanip_dellist interface, which attackers can exploit to cause a Denial of Service (DoS) by sending a specifically crafted payload.

Understanding CVE-2023-27806

This section will delve into the specifics of CVE-2023-27806, explaining what it is and the impact it can have.

What is CVE-2023-27806?

CVE-2023-27806 is a vulnerability found in the H3C Magic R100 R100V100R005.bin firmware, allowing attackers to trigger a Denial of Service attack through a stack overflow in the ipqos_lanip_dellist interface.

The Impact of CVE-2023-27806

The impact of this vulnerability can lead to a loss of service due to the exploitation of the stack overflow, which can disrupt normal operations of the affected device.

Technical Details of CVE-2023-27806

In this section, we will explore the technical aspects of CVE-2023-27806, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in H3C Magic R100 R100V100R005.bin firmware arises from a stack overflow in the ipqos_lanip_dellist interface, accessible at /goform/aspForm. Attackers can exploit this flaw to execute a DoS attack using a specifically crafted payload.

Affected Systems and Versions

The affected system in this CVE is the H3C Magic R100 R100V100R005.bin firmware. All versions of this firmware are susceptible to the stack overflow vulnerability in the ipqos_lanip_dellist interface.

Exploitation Mechanism

To exploit CVE-2023-27806, attackers would need to manipulate the ipqos_lanip_dellist interface by sending a specially crafted payload, causing a stack overflow that results in a denial of service on the target system.

Mitigation and Prevention

In this final section, we will discuss the steps that can be taken to mitigate the risks associated with CVE-2023-27806 and prevent such vulnerabilities in the future.

Immediate Steps to Take

Immediate actions to mitigate the impact of CVE-2023-27806 include applying any available security patches or updates provided by H3C to address the stack overflow vulnerability in the ipqos_lanip_dellist interface.

Long-Term Security Practices

In the long term, organizations should implement robust security practices such as regular security audits, network segmentation, and maintaining updated firmware versions to minimize the risk of similar vulnerabilities.

Patching and Updates

Regularly checking for firmware updates and security patches from H3C and promptly applying them to the affected systems can help prevent exploitation of vulnerabilities like CVE-2023-27806.